The 10G SFP+ BiDi 40km 1270/1330nm pair is a long-distance optical transceiver solution for network operators and enterprises that need to establish a 10Gbps fiber link using only one strand of single-mode fiber.
Unlike conventional duplex SFP+ modules that require separate fibers for transmit and receive, BiDi technology uses different optical wavelengths in each direction. The two modules therefore work as a matched pair, with complementary 1270nm and 1330nm Tx/Rx wavelengths.
Key Features
- 10Gbps SFP+ optical transceiver
- Up to 40km transmission distance
- Designed for single-mode fiber (SMF)
- Single-fiber BiDi transmission
- Complementary 1270nm / 1330nm wavelengths
- Simplex LC optical connector
- DDM (Digital Diagnostic Monitoring) support
- Hot-pluggable SFP+ form factor
- Suitable for long-distance fiber infrastructure
- Useful where only one fiber core is available
- Designed as a matched complementary pair
Comparable 10G BiDi implementations use a 1270nm/1330nm wavelength pair, simplex LC connectivity and DDM, with 40km reach over single-mode fiber.
Typical Applications
This 10G BiDi pair is suitable for:
- ISP backbone and aggregation links
- FTTH/FTTx networks
- Telecom network connections
- Enterprise network interconnects
- Data-centre interconnection
- Metro Ethernet
- Fiber distribution and aggregation
- Long-distance switch-to-switch connections
- Router-to-switch fiber links
- Network upgrades where spare fiber cores are limited
Why Use 10G BiDi?
For an ISP or network operator, one of the major advantages of BiDi is fiber conservation. A conventional duplex 10G optical link requires two fiber strands, while a complementary BiDi pair can carry the bidirectional connection over one strand of single-mode fiber.
This can be particularly useful when extending an existing fiber network where only one unused core is available.
Wavelength Pairing
The modules must be installed as a complementary pair:
| Module | Transmit | Receive |
|---|---|---|
| BiDi Module A | 1270nm | 1330nm |
| BiDi Module B | 1330nm | 1270nm |
The complementary wavelengths allow the two modules to communicate in opposite directions over the same fiber strand.
DDM Monitoring
With Digital Diagnostic Monitoring (DDM), compatible network equipment can report optical operating information such as transmitter and receiver parameters. This is useful for troubleshooting and monitoring long-distance fiber links.
Important Compatibility Note
BiDi SFP+ modules are not interchangeable individually in the same way as ordinary duplex SFP+ modules. The two ends need complementary wavelength configurations—for example, Tx 1270nm/Rx 1330nm at one end and Tx 1330nm/Rx 1270nm at the other.
For network equipment requiring coded/vendor-specific transceivers, confirm the switch, router, OLT or other host-device compatibility before ordering. This is particularly important for ISP and telecom deployments.
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