FIBERSTAMP Launches high sensitivity 400G and 200G QSFP-DD XPSM8 parallel optical modules to enrich the network differentiation pattern

Singapore Feb. 26th, 2024 – Diverse networks drive the discovery and advancement of differentiated technologies for optical interconnection. FIBERSTAMP recently launched two parallel optical modules, 200G QSFP DD XPSM8 and 400G QSFP DD XPSM8 based on 200G/400G QSFP DD PSM8.

  • It is designed with QSFP-DD package, providing 8 parallel 25G high-speed channels.
  • The Optical interface provides two options MPO16/APC or MPO24/APC. 
  • It is upgraded from the previous MINI-TOSA to COB optical engine technology with higher integration and better signal integrity to significantly improve the performance.
  • The Tx transmission optical power could be >-0.5dbm, and the RX sensitivity could be -11 DBM@1E-12 BER at 25.78125Gb/s.
  • It is capable of optical fiber transmission 20km, and the power consumption is <6.5W.

Figure 1 – Rx Sensitivity (dBm)-1E-12 of 200G QSFP-DD XPSM8 under 0~70℃ cycling test

  • Based on a unique parallel optical technology.
  • Designed with a single PCB inside of the module to reduce the process difficulty of the attached board by simple process production.
  • Easy to be proceeded into mass production, including reliable technology and thermal design under control.
  • Good performance and lower power consumption, which is the industry leading level.
  • The product adopts 8-channel parallel COB optical engine, uncooled 50G PAM4 EML laser and MPO16/APC as the optical interface.
  • Under three temperature conditions, TX TDECQ is <2.0dB, RX sensitivity meets -11dbm@2.4E-4 at 50G PAM4.
  • It is capable of optical fiber transmission 20km, and the power consumption of the product is <11W.

Figure 2 – TX TDECQ (dB) Diagram

Figure 3 – Rx Sensitivity of 400G QSFP-DD XPSM8 under 0~70℃ cycling test

The advantage of the 8-lane parallel optical module is that each lane data is independent communication, which is suitable for high-frequency trading computing, AI parallel computing, distributed network of 5G Front-haul base station, Broadcast Television optical networks and various scenarios requiring multi-channel network data monitoring. It has gradually become a mainstream optical module for short and medium distance network applications.

Figure 3 – XPSM8 Application Architecture

  • Support branch lines to 2x 100G QSFP28 PSM4 
  • Support branch lines to 8x 25G SFP28 LR
  • Support branch lines downshifted to 8x10G network
  • Support branch lines to 2x 200G QSFP DD PSM4
  • Support branch lines to 8x SFP56 LR
  • The network could be upgraded from NRZ to PAM4 network by such product.

The high sensitivity of the 200G and 400G QSFP DD XPSM8 optical modules can support longer distances and more link loss!


As an Open Optical Network Mail Carrier, FIBERSTAMP is committed to providing global users with Economic, Professional and Efficient Open Optical Network Solutions. The current main products cover 25G/50G/100G/200G/400G optical transceiver modules, Active Optical Cables (AOCs) and Direct Attached Cables (DACs), 100G/200G/400G coherent optical modules and UHD video transmission products. Meanwhile, through long-term deep digging in new technology, FIBERSTAMP is rapidly evolving to the promising era of 800G and CPO based on Silicon Photonics!