100G BiDi QSFP28 4WDM 20km Transceiver (Side A): BIDI-100G-QSFP28-20A

QSFP28
100G
BiDi
20 km
1270 nm
100G BiDi QSFP28 4WDM 20km Transceiver (Side A)

100G BiDi QSFP28 4WDM 20km Transceiver (Side A) Overview

Our 100G BiDi QSFP28 4WDM 20km Side A transceiver enables fiber-efficient extended-reach connectivity using bidirectional WDM technology. Supporting 20km with FEC over single fiber at blue-side wavelengths (1273-1286nm Tx), this module delivers 10.2 dB link budget at 103.125 Gbps. Must be paired with Side B for operation.

  • Media Type: Single-Mode Fiber (SMF)
  • Connector: Single LC/UPC
  • Fiber Count: BiDi
  • Maximum Distance: 20 km
  • Guaranteed Link Budget: 10.2 dB
  • Tx Wavelenght: 1270 nm
  • Supported Data Rate: 103.125 Gbps
  • DDM/DOM: Supported
  • Forward Error Correction (FEC): Host FEC Supported
  • Temperature Range: Extended -20° to 85°C

100G BiDi QSFP28 4WDM 20km Pricing A-Side

SKUSKU:BIDI-100G-QSFP28-20A
Lead timeMade to Order - 2 Weeks
Standard recommended retail price ex VAT:
1246.88
Choice of 0+
Telecoms & Integrators Globally

100G BiDi QSFP28 4WDM 20km Transceiver (Side A) 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
20 km
Guaranteed Link Budget
10.2 dB
TX Wavelenght
4-channel O-Band WDM (1273.55/1277.89/1282.26/1286.66 nm)
RX Wavelenght
4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 nm)
Supported Data Rate
103.125 Gbps
Supportet 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 (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 Launch Power (Min) Each Lane
-4.3 dBm
Average Launch Power (Max) Each Lane
4.5 dBm
Receiver Type
PIN photodiode
RX 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 Receiver Sensitivity (Min) Each Lane
-14.5 dBm
Average Receiver Sensitivity (Max) Each Lane
4.5 dBm
Receiver Overload
5.5 dBm
Temperature Range
Extended -20° to 85°C
Storage Temperature
-40° to 85°C
Relative Humidity
5 to 85%
Power Consumption (Max)
5 W
Power
+3.3V single power supply
Compliance
CE, RoHS, IEEE 802.3cu, CAUI-4, QSFP28 MSA, SFF-8679

100G BiDi QSFP28 4WDM 20km Transceiver (Side A) Datasheet

v3

Complete technical specifications and product details

Updated:Jan 16, 2026Format:PDF

100G BiDi QSFP28 4WDM 20km Transceiver (Side A) Description

Our EDGEOPTIC BIDI-100G-QSFP28-20A is a multi-vendor compatible 100G BiDi 4WDM-20 QSFP28 bidirectional optical module designed for 100 Gigabit Ethernet applications operating over single-mode fiber infrastructure with single-fiber connectivity. This quad small form-factor pluggable transceiver utilizes wavelength division to enable full-duplex 100G transmission over a single fiber strand, delivering 103.125 Gbps throughput while reducing fiber count requirements by 50% compared to standard duplex solutions.

The BIDI-100G-QSFP28-20A module operates using 4WDM bidirectional technology with four O-Band wavelength channels at 1273.55nm, 1277.89nm, 1282.26nm, and 1286.66nm for transmission (Blue Side TOSA) and four LAN WDM wavelength channels at 1295.56nm, 1300.05nm, 1304.58nm, and 1309.14nm for reception (Red Side ROSA). Our 100G BiDi QSFP28 transceiver utilizes EML (Electro-absorption Modulated Laser) array for transmission and PIN photodiode array for receiving, employing NRZ (Non-Return to Zero) modulation for signal encoding.

Transceiver ensures a 10.2 dB guaranteed optical link budget, which determines the maximum transmission distance. Over standard single-mode fiber with FEC enabled, the transceiver can reach distances up to 20 kilometers. However, distance is just an indicative parameter calculated for comfort of identification – eventually we calculate distance taking into account minimal optical budget and average attenuation of optical cabling in industry. The single-fiber 4WDM architecture provides significant infrastructure savings for metro and campus deployments.

BIDI-100G-QSFP28-20A compatible 100G BiDi 4WDM module is a hot-pluggable QSFP28 with single LC/UPC connector as the optical interface. The electrical interface conforms to QSFP28 MSA and SFF-8679 specifications, ensuring compatibility with standard QSFP28 host systems supporting multiple vendor equipment platforms. Our 100G BiDi QSFP28 transceiver can be encoded to be compatible and successfully operate in different 80+ brands of equipment.

The module incorporates DDM/DOM (Digital Diagnostic Monitoring) functionality providing real-time information including transmitted and received optical power levels, module temperature, bias current, and supply voltage. Additionally, the module supports Host FEC (Forward Error Correction) function which helps the receiving side detect and correct bit errors, improving overall link quality. The module operates within an extended temperature range of -20°C to +85°C with maximum power consumption of 5W, enabling deployment in semi-industrial environments.

Standards compliance includes IEEE 802.3cu, CAUI-4, and QSFP28 MSA specifications. Our 100G BiDi QSFP28 transceiver is CE/RoHS certified.

Important: BiDi transceivers must be deployed in matched pairs with complementary wavelength configurations. This Side A module (Tx O-Band/Rx LAN WDM) must connect to a Side B module (BIDI-100G-QSFP28-20B) with Tx LAN WDM/Rx O-Band configuration. Proper pairing ensures correct bidirectional communication over the single fiber strand.

Typical applications include metro network interconnections, campus backbone links, and deployments where fiber conservation is critical. The 4WDM BiDi design provides 20km reach capability over single fiber infrastructure.

Because our focus is providing top quality service, we are performing serious quality checks before delivery of our products. As a result, we do optical parameter measurements, connector cleanliness tests and QSFP28 transceiver EEPROM memory data validation tests.