Tunable Power for DWDM Optimization
Support tunable transmit power for optimised system margin and power balancing in DWDM networks, enhancing performance without the need for crosstalk correction.

HPE Aruba S4B38A Compatible QSFP-DD DCO 400G DWDM Tunable Coherent ≤120km DOM Duplex LC/UPC SMF Optical Transceiver Module for Transmission, Product Specification:Aruba Compatible - S4B38A, Vendor Name - FS, Form Factor - QSFP-DD, Max. Data Rate - 400Gbps , Wavelength - 1528.77~1566.52nm, Max. Cable Distance - Amplified: ≤120kmUnamplified:≤40km
| Aruba Compatible | S4B38A |
| Vendor Name | FS |
| Form Factor | QSFP-DD |
| Max. Data Rate | 400Gbps |
| Wavelength<br/> | 1528.77~1566.52nm |
| Max. Cable Distance | Amplified: ≤120km <br/>Unamplified:≤40km |
| Connector | Duplex LC/UPC |
| Media | SMF |
| TX Power | -13~-9dBm |
| RX Power | Amplified: <br/>Full Rx OSNR tolerance: -12~0dBm <br/>Extended range: -15~1dBm <br/>Unamplified: -20~0dBm |
| Max. Power Consumption | 18.5W |
| Minimum Receiver Power | Amplified: -12dBm Unamplified: -20dBm |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0℃ to 70°C(32 to 158°F) |
| Inbuilt FEC | CFEC |
| Modulation Format | DP-16QAM |
| CD Robustness | 2400(ps/nm) |
| OSNR Tolerance | 26dB/0.1nm |
| Protocols | OIF 400ZR, OIF-CMIS-05.2, OIF-C-CMIS-01.2, QSFP-DD-Hardware-Rev6.3, IEEE Std 802.3-2018 |
| Application | Edge DCI |
Support tunable transmit power for optimised system margin and power balancing in DWDM networks, enhancing performance without the need for crosstalk correction.
Featured with 18.5W low-power, high-density and high-speed, the QSFP-DD transceiver offers a popular way to help you quickly ramp up to 400G transmission.
The transceiver is featured with high-density and mature technology and saves cost with ≤18.5W low power consumption while ensuring first-class product quality.
The 400G ZR module allows transmission with the Mux/Demux and EDFA in point-to-point topology up to a distance of 80 km, providing greater scale and higher transfer rates for DCI.
Reconfiguring the transceiver to work with different brands, <a href="/de-en/products/156801.html" >FS BOX</a> offers flexibility in stock costs.