1.25G BIDI SFP

C-LIGHT self-developed 1.25G BIDI SFP optical module supports a variety of transmission distances, including 550m, 3km, 3km, 20km, 40km, 60km, 80km, 100km, 120km, 140km, and 160km. Its communication protocol complies with IEEE802.3x/z/ab, the interface protocol complies with SFF-8472, and the encapsulation protocol complies with SFP MSA. 1.25G BIDI SFP optical modules are mainly used in Gigabit Ethernet, Fibre Channel, data centers, and network scenarios that need to save fiber resources and support bidirectional transmission. Its transmission rate is as high as 1.25Gbps, which can meet a variety of network requirements. C-LIGHT has more than 15 years of rich experience in the field of optical communications, focusing on providing spot supply and customized services, and is committed to providing customers with high-quality optical module solutions. In addition, the 1.25G BIDI SFP optical module is compatible with more than 100 brands of switches, and promises to provide original after-sales service to help customers effectively control costs.

3-year warranty Long term maintenance

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100% detection Each module is 100% tested

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Product Details

1.25G BiDi SFP Optical Transceiver for Single-Fiber Long-Reach Network Connectivity

Form Factor	Part No.	Fiber Type	Data Rate	Wavelength	Distance	Connector	Case Temperature	Note
BIDI SFP	CLSFPGEBD1415160	SMF	1.25G	1490nm/1550nm	160km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1514160	SMF	1.25G	1550nm/1490nm	160km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1415140D	SMF	1.25G	1490nm/1550nm	140km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1514140D	SMF	1.25G	1550nm/1490nm	140km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1415120D	SMF	1.25G	1490nm/1550nm	120km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1514120D	SMF	1.25G	1550nm/1490nm	120km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1415100D	SMF	1.25G	1490nm/1550nm	100km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1514100D	SMF	1.25G	1550nm/1490nm	100km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD141580D	SMF	1.25G	1490nm/1550nm	80km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD151480D	SMF	1.25G	1550nm/1490nm	80km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD131560D	SMF	1.25G	1310nm/1550nm	60km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD151360D	SMF	1.25G	1550nm/1310nm	60km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD131460D	SMF	1.25G	1310nm/1490nm	60km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD141360D	SMF	1.25G	1490nm/1310nm	60km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD131540D	SMF	1.25G	1310nm/1550nm	40km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD151340D	SMF	1.25G	1550nm/1310nm	40km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD131440D	SMF	1.25G	1310nm/1490nm	40km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD141340D	SMF	1.25G	1490nm/1310nm	40km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD131520D	SMF	1.25G	1310nm/1550nm	20km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD151320D	SMF	1.25G	1550nm/1310nm	20km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD131420D	SMF	1.25G	1310nm/1490nm	20km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD141320D	SMF	1.25G	1490nm/1310nm	20km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD131503D	SMF	1.25G	1310nm/1550nm	3km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD151303D	SMF	1.25G	1550nm/1310nm	3km	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1315MM	MMF	1.25G	1310nm/1550nm	550m	LC/SC	Com./Ind.	Data Sheet
BIDI SFP	CLSFPGEBD1513MM	MMF	1.25G	1550nm/1310nm	550m	LC/SC	Com./Ind.	Data Sheet

1.25G BiDi SFP Optical Transceiver Overview

C-LIGHT 1.25G BiDi SFP optical transceivers are designed for bidirectional Gigabit-class communication over a single optical fiber. By assigning different wavelengths to the transmit and receive paths, BiDi technology enables two-way data transmission while helping reduce the amount of fiber required for network connectivity.

The product family supports data rates up to 1.25Gbps and offers a wide range of transmission distances from 550m to 160km. Different configurations use complementary wavelength pairs, including 1490nm/1550nm and 1550nm/1490nm, allowing matched modules to be deployed at opposite ends of a single-fiber link.

1.25G BiDi SFP Optical Transceiver Key Features

1.25Gbps Bidirectional Transmission

The module supports optical data rates up to 1.25Gbps for compatible Gigabit Ethernet and other fiber networking applications.

Single-Fiber Operation

BiDi technology carries transmit and receive signals through one fiber strand, helping make better use of existing fiber resources.

550m to 160km Reach

The product family provides multiple transmission-distance options, extending from short-reach connections to 160km long-distance links.

Complementary Wavelengths

The BiDi configurations use paired wavelengths such as 1490nm/1550nm and 1550nm/1490nm for opposite transmission directions.

Single-Mode Fiber

The listed long-distance configurations are designed for single-mode fiber optical transmission.

LC and SC Options

The product specifications provide LC/SC connector options for different network cabling requirements.

Standard SFP Packaging

The compact SFP form factor allows the BiDi module to be installed in compatible networking equipment.

Commercial and Industrial Versions

Commercial and industrial case-temperature options are available for different operating environments.

1.25G BiDi SFP Optical Transceiver Applications

Gigabit Ethernet

The 1.25G BiDi SFP provides optical connectivity for Gigabit Ethernet equipment where bidirectional transmission over a single fiber is preferred.

Fibre Channel Networks

The product family can be used in compatible Fibre Channel environments requiring compact optical connectivity and efficient fiber utilization.

Data Center Connections

BiDi modules can support suitable data center optical links where existing fiber infrastructure needs to carry bidirectional traffic.

Enterprise Networks

The single-fiber architecture provides an option for enterprise networks with limited fiber resources or existing single-strand cabling.

Campus and Building Networks

Different reach configurations can connect network equipment across buildings and other distributed locations using single-mode fiber.

Metropolitan Fiber Links

The longer-reach versions provide options for extended optical paths between network sites across metropolitan areas.

Fiber Resource Optimization

Using one fiber for both directions can help network operators increase connectivity without allocating a separate fiber strand for the return path.

Network Expansion

BiDi technology can simplify the expansion of existing fiber networks where available fiber pairs are limited.

Why Choose C-LIGHT 1.25G BiDi SFP Optical Transceiver?

Efficient Fiber Utilization

The single-fiber architecture provides bidirectional communication without requiring a dedicated second fiber for the opposite transmission direction.

Wide Distance Coverage

The product portfolio extends from 550m to 160km, providing options for both shorter access links and long-distance optical connections.

Matched BiDi Pairs

Complementary Tx/Rx wavelengths allow the two ends of a link to be selected as a matched optical pair for reliable bidirectional transmission.

Long-Distance 1550nm Platform

The 1490nm/1550nm wavelength combinations support extended single-mode fiber transmission for longer network routes.

Flexible Connector Selection

LC and SC options provide additional flexibility when integrating the module with existing fiber infrastructure.

Multi-Vendor Compatibility

C-LIGHT states that its 1.25G BiDi SFP optical modules are compatible with switches from more than 100 brands.

Three-Step Quality Control

C-LIGHT states that every module passes initial testing, final testing, and factory inspection before shipment.

Customized Optical Support

C-LIGHT provides customized optical solutions, compatibility testing, technical guidance, spot supply, and after-sales support according to deployment requirements.

1.25G BiDi SFP Optical Transceiver FAQ

Q1. What is a 1.25G BiDi SFP optical transceiver?

A 1.25G BiDi SFP is a compact optical transceiver that supports bidirectional communication through a single fiber strand by using different wavelengths for transmission and reception.

Q2. What data rate does the 1.25G BiDi SFP support?

The product family supports a data rate of up to 1.25Gbps.

Q3. What transmission distances are available?

C-LIGHT lists configurations covering 550m, 3km, 20km, 40km, 60km, 80km, 100km, 120km, 140km, and 160km.

Q4. Does the module require two fiber strands?

No. The BiDi design uses one fiber strand for both transmission directions by separating the optical signals through different wavelengths.

Q5. Which wavelengths are used?

The listed BiDi configurations use complementary wavelength combinations such as 1490nm/1550nm and 1550nm/1490nm.

Q6. Which fiber type is supported?

The long-distance 1.25G BiDi SFP configurations listed by C-LIGHT use single-mode fiber.

Q7. Which connectors are available?

The product specifications list LC/SC connector options.

Q8. What protocols does the 1.25G BiDi SFP support?

According to the C-LIGHT product page, the communication protocol complies with IEEE 802.3x/z/ab, the interface protocol complies with SFF-8472, and the encapsulation protocol complies with SFP MSA.

1.25G BiDi SFP Optical Transceiver Solution Summary

C-LIGHT 1.25G BiDi SFP optical transceivers provide a single-fiber solution for Gigabit-class bidirectional optical communication. With transmission options extending from 550m to 160km, complementary wavelength configurations, single-mode fiber support, and LC/SC connector choices, the product family can be adapted to different network distances and cabling conditions. Its ability to transmit and receive over one fiber makes the 1.25G BiDi SFP particularly suitable for Gigabit Ethernet, Fibre Channel, data center, enterprise, and fiber-resource-constrained networks.