2.5Gbps 1490nm DFB LD for SDH Telecom Networks | Wuhan Siyou

2.5Gbps 1490nm DFB LD TO-CAN (Non-Sphere) for SDH Telecom Network Applications

Synchronous Digital Hierarchy (SDH) remains a critical technology in many telecom infrastructure systems. It provides standardized digital communication protocols for transmitting large volumes of data over optical fiber networks with high reliability and synchronization.

To maintain stable optical transmission in SDH systems, telecom equipment requires laser diodes with precise wavelength control, high output power, and long-term reliability. The 2.5Gbps 1490nm DFB LD TO-CAN (Non-Sphere)  is specifically designed to meet these requirements, making it an ideal optical source for SDH telecom transmitters.

The Role of 1490nm DFB Laser Diodes in SDH Systems

In SDH networks, optical transmitters convert electrical signals into optical signals that travel through fiber optic cables. The laser diode used in the transmitter must deliver stable wavelength output and high modulation performance.

The 1490nm DFB laser diode is widely used in telecom optical modules due to its excellent wavelength stability and compatibility with long-distance fiber transmission.

Key roles of the 2.5Gbps 1490nm DFB LD in SDH systems include:

• High-speed signal modulation at 2.5Gbps transmission rates
• Stable single-mode wavelength output at 1490nm
• Long-distance optical signal transmission over fiber networks
• Reliable performance in telecom-grade environments

The Distributed Feedback (DFB) structure ensures narrow spectral linewidth and precise wavelength control, which are essential for maintaining signal integrity in dense telecom networks.

Advantages of TO-CAN Package Design

The TO-CAN (Transistor Outline) package provides a compact and highly reliable structure for telecom laser diodes. Compared with other packaging forms, TO-CAN laser diodes offer strong thermal stability and robust performance in demanding telecom environments.

Key advantages include:

High thermal stability
 The TO-CAN package efficiently dissipates heat, ensuring stable operation even under continuous transmission conditions.

Compact structure for module integration
 Its small footprint makes it easy to integrate into various optical transceiver modules used in SDH systems.

Reliable long-term operation
 Telecom networks require components with long lifetimes. The TO-CAN packaging design enhances durability and operational stability.

These features make the 2.5Gbps 1490nm DFB LD TO-CAN (Non-Sphere) a dependable optical source for telecom equipment manufacturers.

Typical Applications in SDH Telecom Networks

The 2.5Gbps 1490nm DFB LD is widely used in various telecom transmission devices that support SDH infrastructure.

Typical application scenarios include:

SDH Optical Transmitters

Laser diodes serve as the optical source in SDH transmitters, converting electrical signals into modulated optical signals for fiber transmission.

Optical Communication Modules

The device can be integrated into telecom optical modules used in backbone networks and metropolitan area networks.

Long-Distance Fiber Transmission

With stable wavelength output and reliable modulation performance, the laser diode supports long-distance fiber communication in telecom systems.

These applications ensure efficient and stable data transmission in legacy SDH networks and hybrid optical infrastructures.

Why Choose Wuhan Siyou Optoelectronics

Wuhan Siyou Optoelectronics Co., Ltd. （插入超链接https://en.whsygd.com/about_index.html）is a professional manufacturer specializing in semiconductor laser devices and optical components for telecommunications and sensing applications.

The company focuses on the research, development, and production of high-performance laser diodes, including:

• DFB Laser Diodes
• Fiber Coupled Laser Modules
• Pump Laser Diodes
• Custom Optical Solutions

With advanced manufacturing facilities and strict quality control systems, Wuhan Siyou delivers reliable laser solutions that meet the demanding standards of global telecom equipment manufacturers.

If you are looking for a stable optical source for telecom transmission systems, you can also contact our technical team for product consultation and customization support.