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1000BASE-BIDI LR SFP modules are
1.25Gbps transceivers designed for long-range communication, offering 10–20 km distances over a single strand of single-mode fiber (SMF) using Wavelength Division Multiplexing (WDM). They enable doubled fiber capacity by using specific wavelength pairs, typically 1310nm/1550nm or 1310nm/1490nm, to transmit and receive simultaneously on one cable, requiring a matched pair for proper function.Typical BIDI Pair Combinations
To function, these modules must be paired with specific complementary wavelengths:
To function, these modules must be paired with specific complementary wavelengths:
- Pair A: 1310nm TX / 1550nm RX (e.g., 10Gtek GLC-BX-U)
- Pair B: 1550nm TX / 1310nm RX (e.g., 10Gtek GLC-BX-D)
- Alternative Pair: 1310nm/1490nm is also common, such as with FiberMall products.
Common Applications
- Fiber to the Home (FTTx): Used to reduce the cost of laying new fiber by using single-strand connectivity.
- Network Backbones: Connecting network switches and routers over long distances.
- Capacity Expansion: Doubling infrastructure capacity over existing fiber, as noted in this video by YouTube.
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1.25G SFP Bidi Transceiver, 1000Base-BIDI Single Mode SFP ...
Amazon.com
https://www.amazon.com › Lynxcel-Transceiver-1000B...
Amazon.com
https://www.amazon.com › Lynxcel-Transceiver-1000B...
1000Base BX SFP Transceiver: 1.25Gbps Fiber optical SFP module, Single-mode module SMF, Simplex LC connector, 1310nm/1550nm Wavelength, DDM/DOM, up to 20km (Â ...
1000BASE-BX-U BiDi SFP 1590nm-TX/1490nm-RX 80km ...
Approved Networks
https://approvednetworks.com › ... › 1GB SFP
Approved Networks
https://approvednetworks.com › ... › 1GB SFP
1000BASE-BX-U BiDi SFP 1590nm-TX/1490nm-RX 80km DOM LC SMF Transceiver is 100% compatible with switches and routers made by most major OEMs like Adtran, ...
SFP 1000BASE BIDI LR
Fibertop
https://www.fibertopsfp.com › sfp-1000base-bidi-lr
Fibertop
https://www.fibertopsfp.com › sfp-1000base-bidi-lr
SKU: SFP-BL3524-20DC Product Highlights Supports up to 10.7Gbps bit rates Hot-pluggable SFP+ footprint 1270nm DFB laser and PIN photodiode, Up to 20km for ...
100Base/1000Base SFP Transceiver Modules
FiberMall
https://www.fibermall.com › store-17147-sfp-transceivers
FiberMall
https://www.fibermall.com › store-17147-sfp-transceivers
FiberMall SFP Fiber & Copper Module features up to 160km transmission over multi-mode and single-mode fiber from speeds of Fast Ethernet to Gigabit ...
$4 to $103–5 day delivery30-day returns
Cisco GLC-BX-U BiDi SFP 1000BASE- ... - QSFPTEK
QSFPTEK
https://www.qsfptek.com › product
QSFPTEK
https://www.qsfptek.com › product
This 1G BiDi SFP transceiver, featured with carrying information in both directions via a single strand, can double your network capacity and save your cable ...Read more
People also ask
What is a BiDi SFP?
BiDi SFP is the most popular Bidirectional transceiver type. Its typical data speed is 1Gbps, mainly for gigabit ethernet and fiber channel connectivity. The 1G BiDi SFP usually uses 1310/1550nm or 1310/1490nm, providing a 3km to 40km transmission distance.Jan 9, 2025
What is BiDi Transceiver: A Beginner's Guide - Optcore
Optcore
https://www.optcore.net › what-is-bidi-transceiver
Optcore
https://www.optcore.net › what-is-bidi-transceiver
What does LR mean on SFP?
Long Reach
This one is actually pretty easy. SR stands for Short Reach, and LR stands for Long Reach. SR transceivers are almost always multi-mode, and optimized for high speeds over relatively short distances. However, the much higher-powered OM3 and OM4 formats can push that into the hundreds of meters for a single cable.Mar 30, 2017
SFP-10G-SR and SFP-10G-LR: What's the Difference? SFP FAQs ...
Hummingbird Networks
https://www.hummingbirdnetworks.com › articles › answ...
Hummingbird Networks
https://www.hummingbirdnetworks.com › articles › answ...
What is the difference between BiDi and duplex SFP?
SFP modules use two fibers. One fiber sends data. The other fiber receives data. BiDi SFP modules use only one fiber for both ways.Jul 23, 2025
What is the Difference Between SFP and BiDi SFP? Your Ultimate Guide
LINK-PP Community
https://resources.l-p.com › knowledge-center › sfp-vs-bi...
LINK-PP Community
https://resources.l-p.com › knowledge-center › sfp-vs-bi...
What is a BiDi module?
BiDi module enables two-way communication over one single optical fiber via the WDM filter component in the transceiver. In detail, BiDi transceivers transmit optical signals at one specific wavelength and receive optical signals at a different wavelength. That's the bi-directional transmission.Apr 7, 2025
The Ultimate Guide to BiDi Transceiver - QSFPTEK
QSFPTEK
https://www.qsfptek.com › qt-news › ultimate-guide-to-b...
QSFPTEK
https://www.qsfptek.com › qt-news › ultimate-guide-to-b...
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Cisco® Compatible 1000BASE-BX-D BiDi SFP 1490nm/ ...
Infinite Cables
https://www.infinitecables.com › products › cisco-comp...
Infinite Cables
https://www.infinitecables.com › products › cisco-comp...
This is a bidirectional Enhanced Small Form-factor Pluggable (SFP) transceiver module with maximum data transfer rate of 1.25 Gbps up to 10km over a simplex ...
CA$11.25In stock30-day returns
OPSTRAN 1000BASE-BX BiDi SFP Optical Transceiver ...
Amazon.com
https://www.amazon.com › OPSTRAN-1000BASE-BX-...
Amazon.com
https://www.amazon.com › OPSTRAN-1000BASE-BX-...
OPSTRAN 1000BASE-BX BIDI SFP Optical Transceiver Module TX1310nm/RX1550nm 20km LC SMF DDM · Supports up to 1.25Gbps bit rates · Hot-pluggable SFP footprint ...Read more
1000BASE-BX-U BiDi SFP 1310nm-TX/1550nm-RX 10- ...
Approved Networks
https://approvednetworks.com › ... › 1GB SFP
Approved Networks
https://approvednetworks.com › ... › 1GB SFP
1000BASE-BX-U BiDi SFP 1310nm-TX/1550nm-RX 10-20km DOM LC SMF Transceiver is 100% compatible with switches and routers made by most major OEMs like Adtran, ...
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Generic Compatible 1000BASE-BX-D SFP BiDi 1490nm- ...
FS.com
https://www.fs.com › ... › 1/2.5G Modules › 1G SFP
FS.com
https://www.fs.com › ... › 1/2.5G Modules › 1G SFP
The 1000BASE-BX SFP transceiver provides up to 10km of 1000Base-BX throughput over single-mode fiber (SMF) using 1490nm-TX/1310nm-RX wavelengths via LCÂ ...Read more
1000Base-BIDI SFP Module, a Pair of 1.25G ... - Newegg
Newegg
https://www.newegg.com › ... › SULE
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https://www.newegg.com › ... › SULE
Plug and Play, Hot Pluggable SFP MSA Compliant. Widely compatible with , Meraki, Ubiquiti UniFi, Mikrotik, Intel, Fortinet, Netgear, D-Link, Supermicro, TP-Link ...Read more
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