100G BiDi QSFP28 80km Transceiver, Side A (Tx 1273-1286nm): BIDI-100G-QSFP28-80A
100G BiDi QSFP28 80km Side A Overview
The BIDI-100G-QSFP28-80A is the Side A module of EdgeOptic's 100G BiDi QSFP28 80 km transceiver pair. It transmits on four O-Band lanes (1273.55, 1277.89, 1282.26, 1286.66 nm) and receives on four LAN WDM lanes (1295.56, 1300.05, 1304.58, 1309.14 nm) over a single LC/UPC simplex strand. The 30 dB optical budget supports 80 km on OS2 single-mode fiber with host RS(528,514) FEC enabled at both ends. Side A must terminate against a Side B module (BIDI-100G-QSFP28-80B) at the opposite end. Two Side A modules on the same fiber will not link, since both transmit and listen on the same wavelength bands. Suited for metro backbone, regional carrier interconnect, and DCI spans where leased dark-fiber cost makes single-strand operation worthwhile.
- Media Type: Single-Mode Fiber (SMF)
- Connector: Single LC/UPC
- Fiber Count: BiDi
- Maximum Distance: 80 km
- Average Link Budget: 30 dB
- Tx Wavelength: 1270 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-QSFP28-80A
In Stock - Ships Next Business Day100G BiDi QSFP28 80km Transceiver, Side A (Tx 1273-1286nm) 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 O-Band WDM (1273.55/1277.89/1282.26/1286.66 nm) |
RX Wavelength | 4-channel LAN WDM (1295.56/1300.05/1304.58/1309.14 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 (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 | 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 (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 | -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 A (Tx 1273-1286nm) Datasheet
v2Complete technical specifications and product details
100G BiDi QSFP28 80km Transceiver, Side A (Tx 1273-1286nm) Description
EdgeOptic's BIDI-100G-QSFP28-80A is a 100 Gigabit Ethernet bidirectional QSFP28 transceiver, carrying full-duplex 100G over a single SMF strand at up to 80 km. It is the Side A counterpart in a matched pair, transmitting on four O-Band wavelengths and receiving on four LAN WDM wavelengths from a Side B module at the far end. Single-fiber operation halves strand count on each span, which matters most where leased dark fiber or duct space is the constraint.
Side A transmits on four O-Band channels at 1273.55, 1277.89, 1282.26 and 1286.66 nm and receives on four LAN WDM channels at 1295.56, 1300.05, 1304.58 and 1309.14 nm. Each direction carries 4x25 Gb/s NRZ for a 103.125 Gb/s aggregate line rate. EML transmitters deliver +2.0 to +6.5 dBm per lane average launch; PIN photodiode receivers reach −28 dBm per lane minimum sensitivity.
The 30 dB optical budget supports 80 km over OS2 single-mode fiber with host RS(528,514) FEC enabled at both ends. Without FEC, usable reach drops well below the rated 80 km. Calculate against the 30 dB budget for each deployment, factoring connector and splice loss plus a margin reserved for aging.
The host electrical interface is CAUI-4 (4x25 Gb/s NRZ) over the QSFP28 MSA connector; the optical interface is a single LC/UPC simplex receptacle. SFF-8636 management exposes per-lane optical power, module temperature, laser bias and supply voltage to the host through DDM/DOM. EdgeOptic encodes the EEPROM with vendor-specific identifiers so the module is recognized as native by the target switching, routing, or transport platform at link-up.
Maximum power consumption is 6.5 W from a single +3.3 V supply, which makes this a high-power QSFP28 module. The host port and line card must support high-power QSFP28 (6.5 W max); some older line cards cap per-port power below this. Operating temperature is 0 to 70 °C commercial, 5 to 85 % humidity, −40 to +85 °C storage.
BiDi modules deploy as matched pairs only. The Side A module (Tx O-Band, Rx LAN WDM) must terminate against a Side B module (BIDI-100G-QSFP28-80B) at the opposite end. Two Side A modules on the same strand will not link: both ends transmit on O-Band and listen on LAN WDM, so neither receiver sees a signal. Verify pair assignment at commissioning and label both ends in the patching record.
Standards compliance covers QSFP28 MSA mechanical and thermal requirements, CAUI-4 electrical, and SFF-8636 management. CE and RoHS certified, Class 1 laser safety per IEC 60825-1. Typical applications: metro backbone, regional carrier interconnects, data center interconnect over leased dark fiber, and enterprise WAN spans up to 80 km on a single fiber strand.
Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For volume pricing, vendor-specific EEPROM coding, or matched Side A and Side B pair shipments, contact our sales team.
BIDI-100G-QSFP28-80A Frequently Asked Questions
Will pairing two BIDI-100G-QSFP28-80A modules (both Side A) establish a 100G link?
No. The link will stay dark. Both Side A modules transmit on the same four O-Band wavelengths (1273-1286 nm) and listen on the same four LAN WDM wavelengths (1295-1309 nm), so neither receiver ever sees a signal from the far end. Side A must pair with a Side B module (BIDI-100G-QSFP28-80B), which transmits on LAN WDM and receives on O-Band. Verify the side designation on both modules during commissioning before connecting the fiber.
Is host FEC required to reach 80 km with the BIDI-100G-QSFP28-80A, and which FEC type?
Yes. The 30 dB link budget and 80 km reach are specified with host RS(528,514) FEC enabled at both ends. Without FEC, error correction headroom is gone and usable reach drops well below 80 km. Most current-generation switches and routers default RS-FEC on for high-power 100G QSFP28 ports; confirm the FEC mode on each port during link bring-up before declaring the span operational.
Does the BIDI-100G-QSFP28-80A require a high-power QSFP28 host slot?
Yes. Maximum power consumption is 6.5 W, which sits above the standard 3.5 W budget that older QSFP28 ports were specified for. The host port and line card must support high-power QSFP28 modules (6.5 W max). Most current-generation switches and routers do, but verify the per-port power class limit on the chassis transceiver table or the line card datasheet before installation. Lifting a single port's power ceiling sometimes also affects neighboring ports on the same line card; check the platform's per-card power budget too.
Can the BIDI-100G-QSFP28-80A interoperate with a third-party Side B module on the same wavelength plan?
It can interoperate at the optical layer if the far-end Side B module uses the matched 4WDM bidirectional wavelength plan (Tx LAN WDM 1295-1309 nm / Rx O-Band 1273-1286 nm) and the host enables RS(528,514) FEC at both ends. Different vendors implement 80 km BiDi 100G over the same single-fiber wavelength architecture, so optical interoperability is realistic when the wavelength plan and FEC mode match. For a guaranteed link budget across an end-to-end pair, deploying matched EdgeOptic Side A and Side B modules is the simplest option, since the 30 dB budget is verified across the pair.