DWDM-SFP10G-C-S Cisco 10Gbps Single-mode Fiber Transceiver Module

Overview of the Cisco DWDM-SFP10G-C-S Transceiver Module

The Cisco DWDM-SFP10G-C-S is a high-performance 10 Gigabit Ethernet SFP+ transceiver designed for optical network applications. Ideal for high-speed networking environments, this module supports a range of advanced features and ensures efficient data transmission over long distances.

General Information

• Manufacturer: Cisco
• Part Number: DWDM-SFP10G-C-S
• Product Type: Transceiver Module

Technical Specifications

• Form Factor: SFP+
• Intended Use: Optical Networking Solutions
• Port Configuration: 1 x 10GBase-DWDM Network Interface
• Supported Medium: Optical Fiber Cabling
• Ethernet Standard: 10 Gigabit Ethernet
• Network Protocol: 10GBase-DWDM Technology

Key Highlights

• Designed for high-capacity data transmission over long distances.
• Reliable fiber-optic compatibility ensuring stable connectivity.
• Optimized for dense wavelength division multiplexing environments.

Advantages

• Enhanced bandwidth efficiency for enterprise-grade networks.
• Durable build for continuous uptime in mission-critical systems.
• Seamless integration with Cisco optical infrastructure.

Cisco DWDM-SFP10G-C-S SFP+ Transceiver Module

The Cisco DWDM-SFP10G-C-S 10Gbps 10GBase-DWDM SFP+ transceiver module represents a high-performance optical networking component engineered for dense wavelength division multiplexing (DWDM) infrastructures in carrier-grade and enterprise optical transport environments. Designed for long-reach single-mode fiber applications, this SFP+ module enables 10 Gigabit Ethernet (10GbE) transmission across extended distances of up to 80 kilometers, leveraging precise wavelength tuning across the DWDM C-band spectrum. The module is optimized for duplex LC connector interfaces and integrates seamlessly into compatible Cisco networking platforms that support SFP+ form factor optics.

Dense Wavelength Division Multiplexing (DWDM) Fundamentals

The DWDM architecture implemented in the Cisco DWDM-SFP10G-C-S module is based on the principle of transmitting multiple optical signals over a single fiber strand by assigning each signal a unique wavelength. This allows service providers and data center operators to maximize fiber utilization while significantly increasing network capacity without laying additional physical fiber infrastructure. The module operates within the standardized ITU-T DWDM grid, specifically tuned for precise wavelength alignment across the C-band spectrum, ensuring minimal signal interference and high spectral efficiency.

Wavelength Precision and Channel Allocation

This optical transceiver supports a tightly controlled wavelength range between approximately 1563.86nm and 1528.77nm, depending on channel configuration. Each DWDM channel corresponds to a fixed frequency spacing, allowing predictable multiplexing behavior in long-haul optical networks. The precision of wavelength locking is critical for minimizing crosstalk, maintaining optical signal integrity, and ensuring interoperability with optical multiplexers (MUX/DEMUX) and reconfigurable optical add-drop multiplexers (ROADM).

10GBase-DWDM Performance Characteristics

10Gbps Data Rate Optimization

Engineered for 10 Gigabit Ethernet transmission, the Cisco DWDM-SFP10G-C-S module supports full-duplex data throughput at 10.3125 Gbps line rate. This enables high-capacity backbone connectivity for enterprise aggregation layers, metropolitan area networks (MANs), and service provider transport networks. The module ensures low latency optical conversion with minimal jitter, preserving packet integrity across long-distance optical links.

Signal Integrity and Forward Error Correction Compatibility

The transceiver is designed to maintain signal integrity over long distances by working in conjunction with forward error correction (FEC) mechanisms typically implemented at the switching or routing layer. Optical signal degradation such as chromatic dispersion and attenuation is mitigated through precise laser control and receiver sensitivity optimization, allowing stable transmission across 80km fiber spans without compromising throughput reliability.

Long-Distance Transmission Capability

80km Extended Reach Design

One of the defining features of this DWDM SFP+ module is its ability to support transmission distances up to 80 kilometers over single-mode fiber. This extended reach capability is achieved through high-output laser transmitters combined with highly sensitive photodetectors on the receiving end. The module is specifically designed for metro aggregation networks, inter-city backbone links, and long-distance data center interconnects where fiber spans exceed typical short-reach optical limitations.

Optical Power Budget and Link Planning Considerations

The optical budget of the Cisco DWDM-SFP10G-C-S module is carefully balanced to accommodate insertion losses from multiplexers, fiber attenuation, patch panels, and splices. Network engineers must consider total link loss when deploying this module in DWDM systems, ensuring that received optical power remains within the receiver sensitivity threshold. This guarantees stable and error-free transmission even in complex optical transport chains.

Single-Mode Fiber Compatibility

Optimized for Single-Mode Fiber (SMF) Networks

This transceiver is exclusively designed for single-mode fiber infrastructure, utilizing narrow-core fiber strands that enable long-distance signal propagation with minimal dispersion. SMF compatibility ensures that the module can operate efficiently across regional and metropolitan optical networks where signal clarity and distance performance are critical requirements.

Duplex LC Connector Interface Standardization

The module features a duplex LC connector interface, which is widely adopted in high-speed optical networking due to its compact size, high precision alignment, and reliable insertion performance. The duplex configuration allows simultaneous transmission and reception of optical signals, supporting full-duplex communication essential for high-throughput network applications.

Cisco Optical Networking Ecosystem Integration

Compatibility with Cisco Switching and Routing Platforms

The Cisco DWDM-SFP10G-C-S module is engineered for seamless interoperability with Cisco networking equipment that supports SFP+ optical interfaces. This includes high-performance switches, routers, and optical transport platforms deployed in enterprise data centers and service provider backbones. Its integration ensures consistent performance monitoring, optical diagnostics, and system-level compatibility within Cisco IOS and NX-OS environments.

Interoperability in Multi-Vendor DWDM Environments

While optimized for Cisco systems, the module also adheres to industry-standard optical specifications, allowing it to function in multi-vendor DWDM deployments. This flexibility supports heterogeneous network infrastructures where optical transport equipment from different manufacturers must interoperate without compromising signal integrity or network performance.

Temperature-Resilient Optical Performance

The module is designed to operate reliably across a wide temperature range, ensuring stable optical performance in both controlled data center environments and more demanding telecom outdoor cabinet installations. Thermal compensation mechanisms within the laser driver circuitry maintain wavelength stability and output power consistency.

Power Efficiency and Heat Dissipation Design

Low power consumption is a critical aspect of SFP+ transceiver design, particularly in dense port environments. The Cisco DWDM-SFP10G-C-S module is optimized for minimal thermal output, reducing strain on system cooling architectures while maintaining high optical transmission efficiency.

Carrier-Class Reliability and Network Availability

High Availability Optical Transport Design

Carrier-grade networks demand extremely high uptime and minimal packet loss. This module is built with robust optical components that ensure long operational lifespan and consistent performance under continuous high-load conditions. Its design minimizes failure rates and supports redundant network architectures commonly deployed in telecom environments.

Long-Term Deployment Stability in DWDM Systems

The stability of wavelength output over time is essential for DWDM systems where channel spacing is tightly controlled. The Cisco DWDM-SFP10G-C-S module maintains wavelength accuracy and optical output stability throughout its lifecycle, ensuring consistent performance in long-term deployments without frequent recalibration.

Metropolitan and Long-Haul Network Applications

Metro Ethernet and Regional Backbone Networks

This transceiver is widely deployed in metropolitan Ethernet networks where high-capacity 10GbE links are required between aggregation nodes, core switches, and data centers. Its 80km reach makes it suitable for connecting geographically distributed network points within urban and regional infrastructures.

Long-Distance Data Center Interconnect (DCI)

In data center interconnect applications, the module provides high-speed optical links between physically separated data centers. DWDM technology allows multiple 10G channels to coexist on a single fiber pair, significantly increasing bandwidth scalability without additional fiber deployment costs.

Telecommunication Carrier Backbone Deployment

Telecom operators utilize this module in backbone transport networks where high-density wavelength aggregation is required. Its DWDM compatibility allows integration into ROADM-based optical transport systems, supporting dynamic wavelength routing and flexible network scaling.

Laser Source Stability and Modulation Techniques

The module employs highly stable laser diodes tuned to specific ITU DWDM grid wavelengths. Advanced modulation techniques ensure that 10GbE signals are encoded efficiently over optical carriers, reducing noise susceptibility and improving spectral efficiency across long-distance fiber links.

Receiver Sensitivity and Noise Reduction

The optical receiver is engineered with high sensitivity photodiodes capable of detecting low-power optical signals after long-distance transmission. Integrated amplification and noise filtering mechanisms ensure clean signal recovery even in high-attenuation network conditions.

Standards Compliance and Optical Industry Alignment

IEEE and ITU-T Compliance

The Cisco DWDM-SFP10G-C-S module adheres to key IEEE 802.3 10GbE standards as well as ITU-T DWDM wavelength grid specifications. This ensures interoperability across compliant optical networking systems and guarantees predictable performance in standardized deployments.

Form Factor and Hot-Swappable Design

The SFP+ form factor supports hot-swappable installation, allowing network operators to replace or upgrade modules without powering down network equipment. This capability is critical for maintaining uninterrupted service in enterprise and carrier-grade environments.

Network Scalability and Future-Ready Optical Expansion

DWDM Channel Expansion Capabilities

By leveraging DWDM technology, network operators can scale bandwidth by adding additional wavelength channels without modifying existing fiber infrastructure. The Cisco DWDM-SFP10G-C-S module plays a key role in enabling scalable optical networks capable of evolving with increasing bandwidth demand.

Support for Next-Generation Optical Transport Architectures

This transceiver is compatible with modern optical transport architectures that emphasize flexibility, automation, and high-density wavelength management. It supports integration into software-defined networking (SDN) controlled optical environments where dynamic wavelength allocation is essential.