1.25Gbps 1550nm 120km SFP Optical Transceiver

1.25G SFP, 120KM, 1550nm, dual fiber, single mode fiber

General Details

The SFP transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps and 120km transmission distance with SMF. The transceiver consists of three sections: a DFB laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All modules satisfy class I laser safety requirements. The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472. For further information, please refer to SFP MSA.

Features
  • Dual data-rate of 1.25Gbps operation
  • 1550nm DFB laser and PIN photodetector for 120km transmission
  • Compliant with SFP MSA and SFF-8472 with duplex LC receptacle
  • Digital Diagnostic Monitoring:
  • Internal Calibration or External Calibration
  • Compatible with SONET OC-24-LR-1
  • Compatible with RoHS
  • +3.3V single power supply
  • Operating case temperature:
    Standard: 0 to +70°C
    Industrial: -40 to +85°C
Specifications

Absolute Maximum Rating

ParametersSymbolMin.Max.Unit
Power Supply VoltageVCC-0.5+4.5V
Storage TemperatureTc-40+85°C
Relative HumidityRH585%

 

Recommended Operating Environment

ParameterSymbolMinTypicalMaxUnit
Operating Case TemperatureStandardTc0+70°C
Industrial-40+85°C
Power Supply VoltageVcc3.133.33.47V
Power Supply CurrentIcc300mA
Data Rate1.25Gbps

 

Optical and Electrical Characteristics

ParameterSymbolMinTypicalMaxUnitNotes
Transmitter
Centre Wavelengthλc 14801550 1580nm
Spectral Width (RMS)σ1nm
Average Output PowerPout05dBm1
Extinction RatioER9dB
Optical Rise/Fall Time (20%~80%)tr/tf0.26ns
Data Input Swing DifferentialVIN4001800mV2
Input Differential ImpedanceZIN90100110Ω
TX DisableDisable2.0VccV
Enable00.8V
TX FaultFault2.0VccV
Normal00.8V
Receiver
Centre Wavelengthλc 1260 1580nm
Receiver Sensitivity-31dBm3
Receiver Overload-9dBm3
LOS De-AssertLOSD-32dBm
LOS AssertLOSA-35dBm
LOS Hysteresis0.54dB
Data Output Swing DifferentialVout4001800mV4
LOSHigh2.0VccV
Low0.8V

Notes:

  • The optical power is launched into SMF.
  • PECL input, internally AC-coupled and terminated.
  • Measured with a PRBS 27-1 test pattern @1250Mbps, BER ≤1×10-12.
  • Internally AC-coupled.
Applications
  • Gigabit Ethernet
  • Fiber Channel
  • Switch to Switch interface
  • Switched backplane applications
  • Router/Server interface
  • Other optical transmission systems
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