100G BiDi QSFP28 80km Transceiver — Side B (Tx 1295-1309nm): BIDI-100G-QSFP28-80B
100G BiDi QSFP28 80km Side B Overview
The BIDI-100G-QSFP28-80B is a 100G BiDi QSFP28 transceiver with 80km reach over a single fiber strand. It uses 4WDM transmission at 1295-1309nm (Side B Tx) and O-Band reception at 1273-1286nm, with a 30dB link budget at 100 Gbps and FEC enabled. LC/UPC simplex connector. Must be paired with the BIDI-100G-QSFP28-80A (Side A) at the far end. Suited for metro backbone and regional carrier interconnects where fiber conservation and long reach matter.
- Media Type: Single-Mode Fiber (SMF)
- Connector: Single LC/UPC
- Fiber Count: BiDi
- Maximum Distance: 80 km
- Average Link Budget: 30 dB
- Tx Wavelength: 1310 nm
- Supported Data Rate: 103.125 Gbps
- DDM/DOM: Supported
- Forward Error Correction (FEC): Host FEC Supported
- Temperature Range: Standard 0°-70°C
100GBASE-ZR4 BiDi QSFP28 80km Pricing
SKU:BIDI-100G-QSFP28-80B
In Stock - Ships Next Business Day100G BiDi QSFP28 80km Transceiver — Side B (Tx 1295-1309nm) Specification
Form Factor | QSFP28 |
Modulation | NRZ (Non-Return to Zero) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Single LC/UPC |
Fiber Count | BiDi |
Maximum Distance | 80 km |
Average Link Budget | 30 dB |
TX Wavelength | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm) |
RX Wavelength | 4-channel O-Band WDM (1273.55/1277.89/1282.26/1286.66 nm) |
Supported Data Rate | 103.125 Gbps |
Supported Ethernet Applications | 100G Ethernet (103.125 Gbps) |
DDM/DOM | Supported |
Forward Error Correction (FEC) | Host FEC Supported |
Transmitter Type | EML Laser |
Tx Wave Bandwidth | 4 LAN WDM Separated Lanes (9.02 nm 1295.56 – 1304.58nm) (L0 Tx center 1295.56nm, L1 Tx center 1300.05nm, L2 Tx center 1304.58nm, L3 Tx center 1309.14nm) |
Average Launch Power (Min) Each Lane | 2 dBm |
Average Launch Power (Max) Each Lane | 6.5 dBm |
Extinction Ratio (Min) | 6 dB |
Receiver Type | PIN photodiode |
RX Wave Bandwidth | 4 LAN WDM Separated Lanes (13.11 nm 1273.55 – 1286.66nm) (L0 Tx center 1273.55nm, L1 Tx center 1277.89nm, L2 Tx center 1282.26nm, L3 Tx center 1286.66nm) |
Average Receiver Sensitivity (Min) Each Lane | -28 dBm |
Average Receiver Sensitivity (Max) Each Lane | 0 dBm |
Receiver Overload | 5.5 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power Consumption (Max) | 6.5 W |
Power | +3.3V single power supply |
Compliance | CE, RoHS, IEEE 802.3cu, CAUI-4, QSFP28 MSA, SFF-8679 |
100G BiDi QSFP28 80km Transceiver — Side B (Tx 1295-1309nm) Datasheet
v2Complete technical specifications and product details
100G BiDi QSFP28 80km Transceiver — Side B (Tx 1295-1309nm) Description
The EDGEOPTIC BIDI-100G-QSFP28-80B is a 100G BiDi QSFP28 transceiver for 100 Gigabit Ethernet over single-mode fiber, with single-fiber bidirectional connectivity and 80km reach. The module uses 4WDM wavelength division technology for full-duplex 100G transmission over a single fiber strand at 100 Gbps. Target deployments include metro backbone and regional network links where fiber pairs are limited.
The BIDI-100G-QSFP28-80B uses 4WDM bidirectional technology with four LAN WDM channels at 1295.56nm, 1300.05nm, 1304.58nm, and 1309.14nm for transmission (Side B TOSA) and four O-Band channels at 1273.55nm, 1277.89nm, 1282.26nm, and 1286.66nm for reception (Side A ROSA). The transmit side uses an EML (Electro-absorption Modulated Laser) array; the receive side uses a PIN photodiode array. All eight wavelength channels use NRZ (Non-Return to Zero) modulation.
The 100G BiDi 80km transceiver provides a 30dB guaranteed optical link budget with FEC enabled, which determines the maximum achievable transmission distance. Over standard OS2 single-mode fiber, the BIDI-100G-QSFP28-80B reaches distances up to 80 kilometers. Actual reach depends on the optical budget available after accounting for connector losses, splice attenuation, and cable plant quality along the route. Using a single fiber strand instead of a duplex pair cuts fiber requirements in half on each span.
The BIDI-100G-QSFP28-80B is a hot-pluggable QSFP28 BiDi module with a single LC/UPC simplex connector. The electrical interface conforms to CAUI-4, QSFP28 MSA, and SFF-8636 management interface specifications. The module can be encoded for compatibility with networking equipment from Cisco, Arista, Juniper, Huawei, Nokia, and other vendors.
The module supports DDM/DOM (Digital Diagnostic Monitoring) with real-time telemetry for transmitted and received optical power, module temperature, laser bias current, and supply voltage. Host FEC (Forward Error Correction) is required to reach the full 80km distance over the single-fiber path. Operating temperature range is 0 to 70°C commercial grade. Maximum power consumption is 6.5W (QSFP28 MSA power Class 7), so the host port must support high-power QSFP28 modules.
Standards compliance covers CAUI-4 electrical interface, QSFP28 MSA mechanical and thermal specifications, and SFF-8636 management interface. The BIDI-100G-QSFP28-80B is CE and RoHS certified.
Important: BiDi transceivers must be deployed in matched pairs with complementary wavelength configurations. This Side B module (Tx LAN WDM 1295-1309nm / Rx O-Band 1273-1286nm) must connect to a Side A module (BIDI-100G-QSFP28-80A) with the reverse wavelength assignment (Tx O-Band / Rx LAN WDM) at the opposite end of the fiber. Using two modules of the same side will not establish a bidirectional link.
Typical applications include metro backbone links, regional carrier interconnects, data center interconnect (DCI) over leased dark fiber, and enterprise WAN spans up to 80km on a single fiber strand.
Every EDGEOPTIC transceiver is tested before shipment: optical parameter measurements against specification limits, connector endface inspection, and QSFP28 EEPROM verification for correct vendor coding on the target host platform.
BIDI-100G-QSFP28-80B Frequently Asked Questions
Is FEC required for the BIDI-100G-QSFP28-80B to achieve 80km reach?
Yes. The BIDI-100G-QSFP28-80B requires host-side FEC (Forward Error Correction) to achieve its full 80km distance rating and 30dB link budget. Without FEC enabled on the host port, usable reach drops substantially — expect well under 80km depending on plant conditions. Verify that your switch or router has FEC enabled on the QSFP28 interface before deployment.
Which module pairs with the BIDI-100G-QSFP28-80B for a complete 100G BiDi link?
The BIDI-100G-QSFP28-80B (Side B) must be paired with the BIDI-100G-QSFP28-80A (Side A) at the opposite end of the fiber. Side B transmits on LAN WDM wavelengths (1295-1309nm) and receives on O-Band wavelengths (1273-1286nm), while Side A operates in the reverse direction. Installing two Side B modules on the same link will not establish connectivity.
Does the BIDI-100G-QSFP28-80B require a high-power QSFP28 host slot?
The BIDI-100G-QSFP28-80B consumes up to 6.5W (QSFP28 MSA power Class 7), which exceeds the standard 3.5W Class 4 budget. Confirm that your host platform supports Class 7 QSFP28 modules on the target port before installation. Most current-generation switches and routers accommodate high-power optics, but some older line cards or chassis may impose lower per-port power limits.
What are the advantages of 100G BiDi over standard duplex 100G transceivers at 80km?
The BiDi module uses a single fiber strand via 4WDM bidirectional technology, while a standard duplex 100G 80km transceiver requires two strands. On a per-link basis, BiDi halves your fiber count. This is particularly relevant on leased dark fiber routes where each strand carries recurring cost, or in conduit-constrained metro rings where spare fibers are limited. Both approaches provide comparable 30dB link budgets with FEC over OS2 single-mode fiber.