In the traditional data center’s energy consumption structure, IT and air conditioning and refrigeration equipment dominate, accounting for 85% of the total energy consumption. These two components have become crucial sources of energy consumption in data centers. To address this challenge, the introduction of liquid cooling technology, particularly immersive liquid cooling technology, has emerged as one of the solutions. This technology is based on a simple yet efficient concept: submerging computing devices in a high-heat capacity liquid to achieve effective heat dissipation and energy utilization.

Immersive liquid cooling technology submerges servers and other computing devices entirely in a non-conductive cooling liquid, achieving comprehensive device cooling. FIBERSTAMP has a comprehensive lineup of immersive liquid-cooled products, including 10G to 800G immersive liquid-cooled optical modules/DAC/AOC and liquid cooling extenders, which are validated through long-term dedication to the research and development of liquid cooling interconnection technology for liquid-cooled servers and data centers. This liquid cooling interconnection solution can rapidly absorb and transfer the heat generated by devices, significantly improving heat dissipation efficiency. Compared to traditional air cooling systems, immersive liquid cooling technology is no longer constrained by the air heat exchange coefficient, eliminating the need for cooling equipment and effectively reducing overall energy consumption. Its modular design also makes the system easier to maintain and upgrade.

In the development of large-scale model applications, liquid-cooled data centers highlight their outstanding heat dissipation performance and significant improvement in energy consumption. The introduction of immersive liquid cooling not only helps address the heat management challenges faced by high-density data centers but also provides a forward-looking solution for optimizing data center energy consumption. Therefore, the future trend of immersive liquid cooling technology is not only a key technological innovation but also a proactive response to sustainable digital development.

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Benefits of Green Networking: A Closer Look

Committing to green networking is not just an environmental responsibility; it also unlocks a myriad of benefits for organizations. Over time, this commitment can yield substantial reductions in key areas, including:

Operating Costs: Green networking translates to operational efficiency, leading to cost savings in the long run.

Electricity Consumption: Through energy-efficient practices, organizations can witness a significant drop in electricity consumption, positively impacting both expenses and environmental impact.

Physical Space: Green networking often involves optimizing hardware and infrastructure, potentially reducing the physical footprint of data centers and freeing up valuable space.

Carbon Footprint: By adopting eco-friendly practices, organizations contribute to the reduction of their carbon footprint, aligning with broader environmental sustainability goals.

Carbon Emissions: Lower energy consumption directly correlates to reduced carbon emissions, fostering a greener and cleaner operational profile.

Water Use: Sustainable practices can extend beyond energy to water conservation, promoting responsible resource management.

Waste Output: Green networking encourages efficient resource utilization, minimizing waste output and contributing to a more eco-conscious data center.

Unlocking the Power of Immersion Cooling Data Centers

Taking the green initiative further, immersion cooling technology emerges as a game-changer in the quest for sustainable data center operations. Immersion cooling involves submerging IT hardware in a dielectric fluid, enhancing heat dissipation and overall energy efficiency. The benefits include:

Enhanced Energy Efficiency: Immersion cooling significantly improves the cooling process, ensuring optimal energy utilization and reducing overall energy consumption.

Extended Hardware Lifespan: The cooling method minimizes wear and tear on hardware, leading to prolonged equipment lifespan and reduced electronic waste.

Environmental Impact: Immersion cooling contributes to a more sustainable future by efficiently managing heat dissipation and lowering the data center’s overall environmental impact.

In summary, the commitment to green networking, coupled with innovative technologies like immersion cooling, not only addresses environmental concerns but also brings about tangible benefits in terms of cost savings, resource efficiency, and prolonged equipment lifespan. Embrace the green evolution for a sustainable and efficient data center future!

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Traditionally, data centers were designed with an average density of five to 10 kilowatts per rack. However, the rise of AI has upended this paradigm, with new requirements demanding 60 kilowatts or more per rack. Additionally, AI applications generate a massive volume of data, necessitating a significant increase in data center capacity.

To meet the power-intensive demands of AI, new data centers are being constructed with much higher power density. This transition is a crucial aspect of enabling AI technologies. Existing data centers are also undergoing transformations to accommodate these changes, enhancing their capacities through optimized interconnection, compute, and storage solutions — a feat that poses challenges for many legacy and on-premises data centers in keeping pace with the latest technological advancements.

The substantial heat generated by energy-intensive GPUs and TPUs poses a challenge that goes beyond technical considerations; it is also an environmental concern. To address this, enhanced environmental controls, including liquid cooling solutions, are becoming increasingly necessary.

Introducing immersive cooling technology represents a significant step forward in the ongoing efforts to optimize new data centers. This innovative method submerges IT equipment in dielectric fluids, efficiently dissipating heat while enhancing overall performance and energy efficiency. Immersive cooling stands out by minimizing hardware inefficiencies commonly encountered by traditional air cooling methods.

Yet, for the widespread adoption of liquid cooling technology, several prerequisites must be met. Firstly, the overall cost of liquid cooling systems needs to be reduced to a level where users perceive it as more cost-effective than air cooling, without requiring special configurations for the latter. Secondly, there’s a need for a comprehensive ecosystem of liquid cooling technology, providing a range of supporting equipment and solutions.

Under these conditions, users are more likely to universally opt for liquid cooling technology. The increasing demand in the industry is pushing the boundaries, making immersion cooling technology more promising than ever before.

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Let’s delve further into DWDM technology. Dense Wavelength Division Multiplexing (DWDM) technology has seen a rise in modulation rates, ranging from 1.25G NRZ to 25G NRZ, incorporating high-level modulations like 50G PAM4 and 100G PAM4. Additionally, competitive DWDM coherent modulation is aiming at 200G, 400G, and future 800G high-bandwidth services.

PAM4 DWDM optical modules can seamlessly integrate into embedded DWDM setups, directly connecting to compatible data center routers or switches without the need for a separate DWDM transceiver platform. This integration significantly reduces costs and simplifies deployment and maintenance. Furthermore, the utilization of appropriate dispersion compensation modules (DCM) and EDFA amplification systems enables the incorporation of PAM4 modules into existing DWDM networks for hybrid transmission.

The next-generation product lineup based on high-level PAM4 modulation includes 50G (1X50G PAM4), 100G (2X50G PAM4), and 100G (1x100G PAM4).

50G (1X50G PAM4) Solutions

Optical modules following this approach, such as the 50G SFP56 DWDM optical modules (C-band, 50GHz wavelength interval), adopt SFP56 packaging to maintain compatibility with SFP+ sizes, allowing direct upgrades to 50G without altering initial deployment structures. Employing 50G PAM4 modulation on both optical and electrical fronts, utilizing DWDM EML lasers on the transmit end, this setup, fortified with DCM and EDFA, meets transmission requirements for distances exceeding 80km. Its single-fiber total bandwidth of 96 waves x 50G = 4800G, coupled with an industrial-grade temperature form, aptly caters to 5G fronthaul system needs.

100G (2X50G PAM4) Solutions

Optical modules utilizing the 100G (2X50G PAM4) approach include the 100G QSFP28 DWDM optical module (C-band, 50GHz wavelength interval). Commonly referred to as the 100G PAM4 QSFP28 in the industry, this module carries 100GE services through two distinct 50G DWDM wavelengths. The electrical side employs 4X25G NRZ, while the optical side offers two options: CS and LC interfaces. The CS interface uses 2 in and 2 out, utilizing 4 optical fibers, whereas the duplex LC interface internally employs WDM multiplexing technology, achieving transmission with only 2 fibers. With DCM dispersion compensation and EDFA amplification, it can meet transmission requirements for distances of at least 80km. Single-fiber total bandwidth supports 96 waves x 50G = 4800G.

100G (1x100G PAM4) Solutions

The optical modules adopting the 100G (1x100G) approach include the 100G QSFP28 DWDM optical module (C-band, 100GHz). This product primarily utilizes DWDM light sources and silicon photonics modulation technology. With the support of DCM+EDFA, it meets transmission requirements for 80km distances, and the single-fiber total bandwidth supports 48 waves x 100G = 4800G.

PAM4 DWDM optical modules, leveraging their advantages, are typically employed in 100G and 400G deployments, such as point-to-point Data Center Interconnect (DCI), DWDM-based 100G Ethernet metropolitan access, campus and enterprise links, and 5G mobile access architecture. For applications requiring 80km to 120km distances in data center DCI, leveraging the cost advantages of high-level PAM4 modulation 50G/100G DWDM technology, they can competitively secure market share against coherent 200G/100G DWDM technologies. As shown in the table below:

The post Next-Generation DWDM Optical Modules Based on PAM4 Modulation first appeared on FIBERSTAMP.

AI’s Rising Power Demands: Immersion Cooling Redefines Operations

The intensifying AI workloads call for elevated computing power and speed, elevating rack power densities, and revolutionizing Data Center Physical Infrastructure (DCPI). While facility power remains constant, transformative shifts emerge in the data center’s white space.

With AI hardware consuming significant power, higher-rated rack PDUs assume a pivotal role. Intelligent rack PDUs, facilitating remote power management despite elevated costs, become indispensable. Simultaneously, the significance of liquid cooling, notably immersion cooling, intensifies. As next-gen CPUs and GPUs fuel AI workloads, managing their immense heat becomes imperative. Adoption of liquid cooling, including immersion cooling, has been growing, poised to accelerate alongside AI infrastructure deployment.

Immersion cooling involves submerging IT equipment in dielectric fluids, dissipating heat efficiently while enhancing performance and energy efficiency. This technology minimizes hardware inefficiencies that air cooling might incur. However, despite the potential, immediate influence of generative AI on liquid cooling might be limited. It remains plausible to deploy current-gen IT infrastructure with air cooling, albeit at the cost of hardware efficiency and utilization.

Some end-users are retrofitting existing facilities with closed-loop air-assisted liquid cooling systems, such as rear door heat exchangers (RDHx) or direct liquid cooling. This approach allows data center operators to leverage liquid cooling’s benefits without extensive facility redesigns. However, to realize optimal efficiency at scale for AI hardware, purpose-built liquid-cooled facilities are essential.

While the current focus on liquid cooling might fully manifest in deployments by 2025, the forecasted surge indicates liquid cooling revenues nearing $2 Billion by 2027.

The Era of Power Challenges: Reshaping Data Center Growth

AI’s expanding footprint drives data center expansion, with the DCPI market projected to witness a 10% CAGR rise to 2027. Yet, power availability remains a concern. Supply chain disruptions led to extended lead times during the pandemic, now easing. However, the surge in AI-driven energy demands outpaces the available power supply.

This imbalance compels data center providers to explore inventive solutions like the ‘Bring Your Own Power’ model, aiming to sustain growth amidst the AI workload surge. The transformative impact of AI on DCPI redefines its role in enabling growth, defining performance metrics, managing costs, and advancing sustainability initiatives.

Neglecting to align DCPI requirements with AI strategies could leave advanced hardware without a suitable power source, undermining overall efficiency and potential gains.

Reference come’s from Dell’Oro Group “AI is Ushering in a New Era for Data Center Physical Infrastructure”

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12G SDI is a solution designed for 4K ultra-high-definition video transmission.
Its primary principle is that 12G SDI can integrate four 3G-SDI signal lines into one, achieving the transmission of 4K audio and video. This integration ensures the quality of transmitting 4K high-definition images and audio while also reducing costs.

There’s a significant difference between SDI optical modules and our standard optical modules.
SDI optical modules are designed specifically for video transmission. The encoding method for video data streams differs from that of telecommunications data. Apart from the difference in rates, they also need to fulfill a form of ‘pathological code testing’ required by video standards.
In addition to meeting general technical standards, SDI video optical modules must pass some specific tests, with the most important being the ‘pathological code (Pathologic Pattern)’ detection and CRC error testing! SDI video optical modules that fail these tests can easily encounter a ‘digital cliff,’ resulting in issues like black screens or flickering images; these issues might occur frequently or intermittently, sometimes appearing every few minutes or even hours.

‘Pathological code testing’ involves artificially creating test codes based on possible scenarios that may occur during usage. They have a certain probability of occurring, similar to stress tests for standard optical modules.

Currently, our standard optical modules can support overclocking to 11G rates, and some can even reach 12G. While using down-speeding to 16G/25G can address rate matching issues, modules not specifically designed and tested cannot directly support ‘pathological code transmission.’ Through our actual tests, we found that our standard modules may experience no signal reception in a 12G 3840x2160p 30Hz line. In a 10G rate environment using a Blu-ray DAD line, the video might display but could have jitter issues. Therefore, in the environment of high-definition video transmission, professional 12G SDI optical modules are necessary to ensure stable data signal transmission and sending, ultimately guaranteeing the clarity and stability of the video.

For more SDI optical modules and broadcasting optical network solutions, visit https://www.fiberstamp.com/uhd-video-optics.html

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AI applications demand swift and reliable data transmission. Cut-Through Switches enable immediate data transmission without processing entire frames, yet they require consistent end-to-end link speeds. Inconsistent network speeds can lead to latency issues, especially with large AI training data frames. To meet AI needs, FIBERSTAMP has enhanced end-to-end direct-attached connections. Their newly launched 800G and 400G DAC/ACC/AOC product line, available in QSFP-DD/OSFP form factors, offers vital technical support for data centers, significantly boosting data transmission and processing efficiency.

FIBERSTAMP addresses this by providing PCC/ACC/AOC options in QSFP-DD/OSFP form factors with branching capabilities, enabling both storage forwarding and cut-through switching to meet various AI application transmission needs.

Detailed product list is as follows,

The successive deployment of large-scale high-performance data centers to handle vast AI models like ChatGPT, BERT, and others is a crucial step for operators. FIBERSTAMP will continue launching more cost-effective AI application network architecture solutions to enhance network capabilities, aiding in the construction of stronger and more comprehensive network infrastructures.

The post FIBERSTAMP Unveils 400G/800G High-Speed Cables in QSFP-DD/OSFP Form Factors for AI Data Applications first appeared on FIBERSTAMP.

Significantly, silicon photonics chips are harmonious with CMOS technology, showcasing superior speed, bandwidth, and performance in comparison to III-V family optical devices. Consequently, in the production of devices surpassing 400G, 800G, and 1.6T rates, the manufacturing processes and device performance display exceptional capabilities. Now, let’s delve into a cost-effective architecture solution for 400G rate data center architecture, integrating 4-channel optics, silicon photonics, and 100G PAM4 technology provided by FIBERSTAMP.

The combination of 4x100G PAM4 electrical interface and 400G QSFP112 SR4 and DR4 silicon photonics technology achieves high integration with fewer connections, resulting in reduced power consumption and cost savings. This product line includes the following silicon photonics optical modules: 400G QSFP112 DR4/DR4+, 400G QSFP112 FR4, 400G QSFP112 CWDM4/LR4.

The core technology within FIBERSTAMP’s silicon photonics modules revolves around innovative free-space COB high-coupling efficiency packaging design and MZI software locking algorithms. In terms of silicon photonics cores, collaborative efforts with partners have yielded joint designs for multiple silicon photonics chips.

Advantages of silicon photonics include high production yield, cost efficiency, compact spatial utilization, polarization splitting and rotation, superior signal quality over EML, and temperature-insensitive modulators. Additionally, it delivers high output optical power and longer transmission distances compared to EML. However, it’s pivotal to note that silicon photonics modules lack native lasers and grapple with limitations in lossy modulators.

Now, let’s closely examine FIBERSTAMP’s 400G DR4/DR4+/DR4++ Silicon Photonics Optical Modules Series.

400G QSFP-DD DR4/DR4+/DR4++ Features with

QSFP-DD MSA and CMIS compliant
Compliant to 802.3cu
8×53.125Gbit/s PAM4 electrical interface(400GAUI-8)
4×106.25Gbps(53.125GBd PAM4)Optics architecture
Power consumption <10W
Maximum link length of 500m/2km/10km G.652 SMF with KP4-FEC
MPO-12 receptacles
Built-in digital diagnostic functions
Operating case temperature 0°C to +70°C
3.3V power supply voltage
RoHS compliant(lead free)

400G QSFP112 DR4/DR4+/DR4++ Features with

• QSFP112 MSA and CMIS compliant
• Compliant to 802.3cu
• 4×106.25Gbps PAM4 electrical interface
• 4×106.25Gbps PAM4 Optics architecture
• Power consumption <10W
• Maximum link length of 500m/2km/10km G.652 SMF with KP4-FEC
• MPO-12 receptacles
• Built-in digital diagnostic functions
• Operating case temperature 0°C to +70°C

The transmitter utilizes a highly integrated silicon photonics solution, while the receiver employs a PIN detector. OMA RX sensitivity meets -7.1dBm @ 2.4E-4 Pre-FEC 53.125GBd, consuming less than 10W of power.

NVIDIA’s application: 400G IB/EN Switch — 2 CONNECTX-7 and BLUEFIELD-2x400G to 400G link.

FIBERSTAMP provide a differentiated product line of high-speed silicon photonics modules, as follows

With the maturation of silicon photonics technology, cost-effective 400G data centers are approaching maturity and commercialization. The integration of silicon photonics technology enables more efficient data processing, transmission, and reception. Reduced signal loss, component integration, and optimized power usage collectively contribute to enhancing energy efficiency and cost-effectiveness in data centers.

The post Exploring FIBERSTAMP’s Advanced Silicon Photonics for 400G Networks first appeared on FIBERSTAMP.

The forecast report, compiled by industry experts at Dell’Oro, highlights the robust growth propelled by the global rollout of 5G networks. It underscores the critical role played by E-band radios, showcasing a staggering 22 percent Compound Annual Growth Rate (CAGR) anticipated over the next five years. The proliferation of 5G deployments worldwide is substantially fueling the need for enhanced wireless mobile backhaul solutions.

As a premier optical network innovator, FIBERSTAMP is dedicated to advancing both the 5G and DWDM sectors, particularly in long-distance data transmission. The company boasts a comprehensive suite of 5G products encompassing a wide spectrum of speeds, ranging from 25G to 400G.

FIBERSTAMP prides itself on a product line tailored to address the intricacies of fronthaul, midhaul, and backhaul scenarios within 5G networks. Their offerings include an array of colored-light and gray-light modules, purpose-built parallel computing modules, and the recent addition of the 100G DWDM PAM4 module available in O/C-band variants. This innovative addition not only reduces fiber costs but also significantly enhances cost-efficiency and efficacy in catering to the ever-evolving network requirements.

Moreover, FIBERSTAMP provides an exemplary range of 100G to 400G backhaul modules, ensuring unmatched signal assurance for flawless transmissions. As the demand for reliable, high-speed, and seamless data transmission intensifies, FIBERSTAMP continues to stand as a beacon of cutting-edge innovation in the telecommunications sphere, driving the industry toward a future of unparalleled connectivity and efficiency.

The post Surging Microwave Transmission Revenue Projections Highlight 5G Evolution’s Impact first appeared on FIBERSTAMP.

When selecting a thermal pad, several key considerations come into play:

Material’s Thermal Conductivity:

The more thermally conductive a material is, the lower its thermal resistance tends to be. This translates to improved heat conduction capabilities. Achieving higher thermal conductivity often involves increasing filler content in silicone gel and using powders like boron nitride, albeit with a higher cost. Thermal conductivity (symbolized as “k”) indicates a material’s heat conduction capacity and is measured in W/(m·K), representing watts per meter per Kelvin. Common examples include air with a low thermal conductivity of 0.026 W/(m·K), used more for insulation; water with a higher thermal conductivity of 0.6 W/(m·K), suitable for general thermal applications; and copper, an excellent conductor with a thermal conductivity of 400 W/(m·K), widely used in electronics for its exceptional heat conduction properties. Thermal conductivity is affected by factors like composition, structure, density, moisture, and temperature, categorizing materials as insulating or thermally conductive.

Thickness

The pad’s thickness should align with the design’s gap width. A recommended compression of 20% to 50% relative to the thickness brings it closer to the gap’s dimensions. For instance, a 2.0mm pad compressed by 25% aligns with a 1.5mm gap. This thickness ensures optimal gap filling without exerting excessive stress.

Material hardness and flexibility

Material hardness not only affects the compression ratio but is primarily concerned with the adhesion between the thermal pad and the heat sink or heat source during application. A softer thermal pad surface with lower hardness entails less surface tension, leading to better infiltration and integration with the adhering surface, minimizing any gaps and significantly reducing contact thermal resistance.

Material tensile strength

Adequate tensile strength ensures that the material is less prone to excessive deformation during assembly or potential rupture leading to gaps. Particularly for thermal pads with thicknesses around 1.0mm. Some manufacturers add a layer of glass fiber or silicone skin to some products to enhance tear resistance. While such structures simplify processing and assembly, they might increase the material’s intrinsic thermal resistance. Specifically, surface composite forms increase the thermal pad’s surface hardness, reducing its adhesion and infiltrating properties, subsequently raising contact thermal resistance.

Compression ratio of the material

The compression ratio refers to the material’s thickness change under different pressures, providing a convenient parameter for thermal designers in material selection. By considering the inherent gap size and assembly pressure settings, an appropriate thickness of thermal conductive material can be selected more efficiently.

Material compression deformation

Compression deformation mainly refers to the thermal pad’s ability to recover to its initial thickness after compression. Factors affecting its recovery include intermolecular forces (viscosity), changes or damage to the network structure, and molecular displacement. If the thermal pad’s deformation is due to molecular chain elongation, its recovery (or permanent deformation) is mainly determined by the thermal pad’s elasticity. However, if its deformation involves network damage and relative molecular flow, this part is irreversible, resulting in the thermal pad’s permanent compression deformation.

Oil permeation rate of the material

Softer thermal pads generally have lower curing degrees and are more prone to silicone oil seepage when heated. Silicone oil migration can not only contaminate components but also gradually increase the product’s hardness, leading to reduced adhesion and infiltration properties. Consequently, contact thermal resistance increases. Currently, common thermal pads on the market have an oil permeation rate of approximately 2.5% to 3.5%, and better products can control it between 2.0% and 2.5%.

Other Factors

Attributes like dielectric strength, fire rating, and electrical insulation capability should also be considered.

Understanding these aspects is crucial in selecting the right thermal pad to optimize heat transfer and efficiency within electronic devices and industrial applications.

The post Optimizing Thermal Pad Selection: Key Factors for Enhanced Heat Transfer and Reliability first appeared on FIBERSTAMP.