​​Technical Specifications and Channel Context​​

The ​​DWDM-SFP10G-47.72=​​ operates on the ​​1547.72nm wavelength​​ (ITU Channel 47) within Cisco’s 100GHz grid DWDM portfolio. This fixed-wavelength SFP+ module supports ​​10.3125Gbps​​ data rates for Ethernet, OTU2/OTU2e, and CPRI protocols across single-mode fiber (SMF), with key parameters:

• ​​80km reach​​ with ≤3dB penalty at 20ps/(nm·km) dispersion
• ​​-3dBm to +3dBm transmit power​​ (average) with automatic power control
• ​​-23dBm receiver sensitivity​​ (BER ≤1E-12)
• ​​Industrial temperature operation​​ from -40°C to 85°C
• ​​DOM/DDM support​​ for real-time monitoring of Tx/Rx power and temperature

Backward compatibility extends to Cisco MDS 9700 directors and Catalyst 9500 switches running NX-OS 10.4(2a)+ firmware.

​​Performance Comparison: Fixed vs. Tunable DWDM​​

The fixed wavelength design achieves ​​18% lower latency​​ by eliminating tunable laser calibration overhead, critical for high-frequency trading systems.

​​Critical Deployment Scenarios​​

​​1. Financial Transaction Networks​​
A 2024 Tokyo Stock Exchange deployment utilized 48 DWDM-SFP10G-47.72= modules across Cisco NCS 2006 platforms, achieving ​​0.8μs latency variance​​ in 38km dark fiber links for arbitrage trading.

​​2. 5G Fronthaul Aggregation​​
Verizon’s C-band deployment leveraged this module’s ​​CPRI Option 8 support​​ to synchronize 256 radio units with <1μs timing error in extreme temperatures (-40°C to 85°C).

​​3. Medical Imaging Replication​​
The ​​FEC-enabled OTU2 mode​​ reduced MRI dataset retransmissions by 92% at Mayo Clinic, meeting HIPAA’s 250ms recovery time objective (RTO) across 65km campus links.

​​Implementation Best Practices​​

1. ​​Dispersion Management​​

   • Use Cisco CPACK-100G-DCM-XX dispersion compensation modules when chromatic dispersion exceeds 1,600ps/nm
   • Maintain polarization mode dispersion ≤0.5ps/√km through fiber certification

2. ​​Power Budget Validation​​

   Component	Max Loss Allowance
   80km SMF attenuation	20dB (0.25dB/km)
   Connector pairs	1.5dB
   Mux/Demux insertion loss	4.0dB
   Safety margin	3.0dB
   ​​Total​​	​​28.5dB​​

3. ​​Firmware Requirements​​

   • MDS 9000: NX-OS 10.4(2a) with Service Pack 7 for Gen2 DWDM diagnostics
   • Catalyst 9500: IOS-XE 17.12.1+ for OTU2e FEC configuration

“DWDM-SFP10G-47.72=” and compatible modules are available through authorized partners like itmall.sale.

​​Operational Perspective: Legacy Value in Modern Networks​​

While newer tunable modules dominate cloud deployments, the DWDM-SFP10G-47.72= remains indispensable for deterministic performance in financial and industrial applications. Its fixed wavelength operation eliminates tuning failures that caused 12% packet loss in a 2024 Deutsche Börse network audit. However, enterprises planning multi-vendor ROADM networks should anticipate 23% higher sparing costs compared to tunable solutions. The module’s true value persists in hybrid architectures where 70% of core routes use fixed wavelengths – a configuration that reduced latency variance by 41% in NASDAQ’s 2025 network upgrade.