155M SFP CWDM 1270-1610nm 120km Duplex LC Optical Transceiver

• Supports data rates up to 155Mb/s
• Transmission distance of up to 120km
• Broad CWDM wavelength range from 1270nm to 1610nm
• Designed for 9/125μm single-mode fiber
• CWDM DFB laser transmitter
• Hot-pluggable SFP form factor
• Duplex LC optical interface
• Single +3.3V power supply
• Maximum power consumption below 1W
• Supports Digital Diagnostic Monitoring
• SFF-8472-compliant monitoring interface
• Commercial, extended, and industrial temperature options
• Suitable for long-distance low-rate optical networks
• Compact and low-power design

• SONET OC-3 networks
• SDH STM-1 systems
• Fast Ethernet links
• CWDM optical networks
• Telecom access networks
• Metro optical networks
• Long-distance optical transmission
• Optical access infrastructure
• 120km-class single-mode fiber links
• Network capacity expansion over existing fiber

FiberMania provides OEM and customized manufacturing services for 155Mbps SFP CWDM optical transceivers. Customization options can include CWDM wavelength selection, host equipment compatibility, EEPROM coding, DDM parameters, operating temperature grade, product labeling, housing identification, packaging, and other project-specific requirements.

For CWDM network deployments, customers can specify the required wavelength according to their MUX/DEMUX channel plan. Commercial, extended, and industrial temperature grades can also be selected according to the deployment environment. Sample testing and compatibility evaluation can be supported before volume production.

Q1. Why would a 155Mbps network require a 120km optical transceiver?

Although 155Mbps is a relatively low data rate by modern standards, some telecom and legacy optical networks still require very long transmission distances. A 120km module can extend connectivity between remote access sites, metro aggregation points, and other locations where replacing existing infrastructure is not practical.

Q2. How does CWDM help in a long-distance optical network?

CWDM enables multiple optical channels with different wavelengths to share the same fiber infrastructure. This allows network operators to increase the capacity of an existing fiber route while using wavelength-specific transceivers for individual optical channels.

Q3. How should the CWDM wavelength be selected?

The wavelength should correspond to the channel plan of the CWDM system. When used with a MUX/DEMUX, the transceiver wavelength must match the appropriate optical channel. Fiber attenuation and component insertion loss at the selected wavelength should also be considered when evaluating a 120km link.

Q4. Does the 120km rating mean the module can always transmit 120km?

No. The maximum distance depends on the complete optical link budget. Fiber attenuation, connector and splice losses, CWDM MUX/DEMUX insertion loss, optical power levels, and other system components can affect the actual achievable distance. A link-budget calculation should be performed before deployment.

Q5. What is the benefit of having commercial, extended, and industrial temperature versions?

Different temperature grades allow the same optical platform to be adapted to different installation environments. Commercial versions are suited to controlled indoor environments, while extended and industrial versions provide wider operating temperature ranges for installations exposed to greater temperature variations.

Q6. Can the transceiver be supplied with a specific CWDM wavelength?

Yes. FiberMania can provide wavelength-specific configurations for B2B CWDM projects. Customers can provide their required wavelength, CWDM channel plan, or MUX/DEMUX specifications so the appropriate configuration can be selected and verified.