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  6. 1.25Gbps 2km MMF SFP Optical Transceiver

1.25Gbps 2km MMF SFP Optical Transceiver

1.25G SFP, 2KM, 1310nm, dual fiber, multimode fiber

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General Details

The SFP transceivers are high performance, cost effective modules supporting dual data-rate of 1.25Gbps and 2km transmission distance with MMF. The transceiver consists of three sections: a FP 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
  • Data-rate of 1.25Gbps operation
  • 1310nm FP laser and PIN photodetector for 20km 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

Parameters Symbol Min. Max. Unit
Power Supply Voltage VCC -0.5 +4.5 V
Storage Temperature Tc -40 +85 °C
Relative Humidity RH 5 85 %

 

Recommended Operating Environment

Parameter Symbol Min Typical Max Unit
Operating Case Temperature Standard Tc 0 +70 °C
Industrial -40 +85 °C
Power Supply Voltage Vcc 3.13 3.3 3.47 V
Power Supply Current Icc 300 mA
Data Rate 1.25 Gbps

 

Optical and Electrical Characteristics

Parameter Symbol Min Typical Max Unit Notes
Transmitter
Centre Wavelength λc 1310 nm
Spectral Width (RMS) σ 0.85 nm
Average Output Power Pout -5 0 dBm 1
Extinction Ratio ER 9 dB
Optical Rise/Fall Time (20%~80%) tr/tf 0.26 ns
Data Input Swing Differential VIN 400 1800 mV 2
Input Differential Impedance ZIN 90 100 110 Ω
TX Disable Disable 2.0 Vcc V
Enable 0 0.8 V
TX Fault Fault 2.0 Vcc V
Normal 0 0.8 V
Receiver
Centre Wavelength λc 1310 nm
Receiver Sensitivity -20 dBm 3
Receiver Overload 0 dBm 3
LOS De-Assert LOSD -21 dBm
LOS Assert LOSA -35 dBm
LOS Hysteresis 1 4 dB
Data Output Swing Differential Vout 400 1800 mV 4
LOS High 2.0 Vcc V
Low 0.8 V

Notes:

  • The optical power is launched into MMF.
  • 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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