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100G QSFP28 BIDI Tx1291nm/ Rx1311 nm

100G QSFP28 BIDI Tx1291nm/ Rx1311 nm

Brand: D-TECH
SKU: #21
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Category: Networking Goods
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Warranty: Seller warranty (if applicable)
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Product Overview

The 100G QSFP28 Bi-Directional (BIDI) transceiver is designed for high-speed optical communication over single-mode fiber (SMF). It operates using a single fiber strand with duplex wavelength transmission—Tx1291nm/Rx1311nm or the reverse pair.
This module provides reliable 100Gbps data transmission up to 20 kilometers, making it ideal for data center interconnects and 100G Ethernet backbone applications.

Features

  • Supports 106.25Gbps PAM4 lane signaling rate

  • Up to 20km transmission over single-mode fiber (SMF)

  • EML laser and PIN photodiode receiver

  • 4x25.78Gbps NRZ electrical interface (CAUI-4)

  • KP4 FEC supported inside the module

  • I²C interface with integrated digital diagnostics (DDM)

  • Simplex LC optical interface in QSFP28 MSA form factor

  • Single +3.3V power supply, power consumption <4W

  • Operating temperature range: 0°C to +70°C

  • Fully compliant with SFF-8636, SFF-8679, and 100G Lambda MSA LR1 standards

  • RoHS 2.0 and EU Directive 2015/863/EU compliant

Applications

  • 100GBASE-LR BIDI Ethernet Links

  • Data Center Interconnections (DCI)

  • Enterprise and Campus Networks

  • High-Speed Switching and Routing Platforms

Ordering Information

Data RateWavelength (Tx/Rx)Fiber TypeDistanceConnectorTemp RangeDDMLatch Color
106.25Gbps1291nm / 1311nmSMF20kmSimplex LC0~70°CYesPurple
106.25Gbps1311nm / 1291nmSMF20kmSimplex LC0~70°CYesRed

Absolute Maximum Ratings

ParameterSymbolMinMaxUnit
Storage TemperatureTS-40+85°C
Supply VoltageVCC-0.5+4.0V
Operating Relative HumidityRH—+85%

Recommended Operating Conditions

ParameterSymbolMinTypicalMaxUnit
Case TemperatureTC0—+70°C
Power Supply VoltageVCC3.133.33.47V
Transmission DistanceTD——20km (over SMF)

Optical Characteristics

Transmitter

ParameterSymbolMinTypicalMaxUnit
Center WavelengthCW1284.512911297.5nm
Average Launch PowerPTX-0.2—+6.6dBm
Extinction RatioER3.5——dB
Optical Modulation Amplitude (OMAouter)OMAouter2.8——dBm
TDECQ (max)TDECQ——3.6dB
Side Mode Suppression RatioSMSR30——dB
Power Off (Laser Off)Poff——-30dBm

Receiver

ParameterSymbolMinMaxUnit
Center WavelengthCW1284.5 / 13111297.5 / 1317.5nm
Receiver Sensitivity (OMAouter)SEN_OMA—-7.6dBm
Average Input PowerPRx-10+6.6dBm
Damage ThresholdPdamage7.6—dBm
ReflectanceRef—-26dB
LOS Assert / De-AssertLosA / LosDA-26 / -10—dBm

Electrical Characteristics

ParameterSymbolMinTypicalMaxUnit
Differential Input ImpedanceRin—100—Ω
Input Voltage Swing (Differential)VIN,P-P——900mVpp
Output Differential ImpedanceRout—100—Ω
Output Voltage SwingVOUT,P-P——900mVpp
Common Mode Voltage—-0.3—2.8V
Transition Time (20%~80%)Tr/Tf10——ps
Power SupplyVCC3.133.33.47V

Digital Diagnostic Monitoring (DDM)

ParameterRangeAccuracyUnit
Temperature0 to +70±3°C
Voltage0 to Vcc±3%V
Tx Bias Current0 to 100±10%mA
Tx Output Power-0.2 to +6.8±3dB
Rx Input Power-10 to +6.6±3dB

Communication Interface Timing

ParameterSymbolMaxUnitDescription
Initialization Timet_init10sTime from power-on or hot-plug until module is fully operational
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