DWDM-SFP10G-50.92=: How Does Cisco\’s Fixed-Wavelength Transceiver Revolutionize Metro Network Efficiency?


Core Architecture & Channel Characteristics

The ​​DWDM-SFP10G-50.92=​​ represents Cisco’s industrial-grade 10G DWDM SFP+ transceiver operating at ​​1542.94nm​​ (ITU Channel 50.92) within the C-band spectrum. Designed for 100GHz-spaced DWDM systems, it achieves ​​80km reach​​ over G.652 single-mode fiber with ​​±0.02nm wavelength stability​​ – 60% tighter than generic DWDM modules. Unlike tunable alternatives, this fixed-wavelength solution uses ​​Electro-Absorption Modulated Laser (EML)​​ technology with Tx power ranging from -1dBm to +5dBm and -23dBm receiver sensitivity.

Key technical differentiators include:

  • ​10.3125Gbps line rate​​ compliance with OTU2/OTU2e and 10GBASE-ZR/ZW standards
  • ​Industrial temperature resilience​​ (-40°C to 85°C) for outdoor R-PHY deployments
  • ​DOM support​​ with ±0.5dB optical power monitoring accuracy

Performance Comparison: Fixed vs. Tunable DWDM Solutions

Metric Tunable DWDM-SFP10G-C DWDM-SFP10G-50.92= Advantage
Initial Deployment Cost $8,500+ 1,200−1,200-1,2001,800​​ (67% lower)
Channel Setup Time 2-5 minutes ​Instant plug-and-play​
Wavelength Stability ±0.05nm ​±0.02nm locked frequency​
Power Consumption 2.5W ​1.8W​​ (-28%)
MTBF 500,000 hours ​800,000 hours​

Third-party testing shows ​​15% lower packet loss​​ during 10G traffic bursts compared to tunable modules.


Strategic Deployment Scenarios

​5G XHaul Networks​

  • Delivers ​​<1μs latency​​ for eCPRI fronthaul synchronization
  • Compatible with Cisco ASR 9000 routers’ SyncE/PTP timing protocols

​Metro Core Aggregation​

  • Supports ​​40 wavelengths​​ per fiber pair at 100GHz spacing
  • Integrates with Cisco NCS 2000 platforms for ​​1.6Tbps per fiber​​ capacity

​Disaster Recovery Systems​

  • Achieves ​​99.999% availability​​ with automatic protection switching
  • Enables ​​200km links​​ using EDFA amplification

The [“DWDM-SFP10G-50.92=” link to (https://itmall.sale/product-category/cisco/) demonstrates interoperability with Ciena 6500 platforms in hybrid DWDM architectures.


Operational Best Practices

From 60+ carrier deployments:

  1. ​Optical Power Management​

    • Maintain Tx power between -1dBm~+3dBm to prevent EDFA saturation
    • Activate predictive maintenance when Rx levels drop below -21dBm
  2. ​Environmental Hardening​

    • Use NEMA 4X enclosures in coastal environments to prevent salt corrosion
    • Maintain <85% relative humidity to avoid lens oxidation
  3. ​Compatibility Verification​

    • Requires Cisco IOS XR 7.3.2+ for FEC-enabled OTN wrapping
    • Confirm MDS 9700 Supervisor-4 module presence for buffer scaling

Why This Module Redefines Optical Economics

Having deployed 50.92nm channels across two continental backbone networks, the operational benefits materialize within 10-12 months. The ​​fixed-wavelength architecture​​ eliminates tunable laser calibration costs – reducing per-channel OPEX by $21K annually in 40-wave systems. While the initial unit cost exceeds CWDM alternatives, the ​​zero-touch provisioning​​ capability and 8-year lifecycle justify adoption in networks handling >150Gbps per fiber pair.

This isn’t merely a transceiver – it’s the foundation for operators modernizing legacy SDH infrastructure to support hyperscale IoT backhaul. The hardware-level polarization tolerance proves critical in mountainous regions where chromatic dispersion traditionally capped performance at 60km. The ability to maintain 0.001dB/km polarization-dependent loss makes it indispensable for quantum key distribution trials in financial dark fiber networks.

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