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2.488Gbps SFP BiDi 1310nm TX / 1550 nm RX 20km

Features

Dual data-rate of 2.488Gbps/2.125Gbps operation

1310nm DFB laser and PIN photo detector for 20km transmission

Compliant with SFP MSA and SFF-8472 with simplex LC or SC receptacle

Digital Diagnostic Monitoring: Internal Calibration or External Calibration

Compatible with SONET OC-48 system

Compatible with RoHS

+3.3V single power supply

Operating case temperature range of 0°C to +70°C (Commercial) or -40°C to +85°C (Industrial)

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2.488Gbps SFP Bi-Directional Transceiver, 20km Reach                                                                                                          

 

Applications

SDH STM-16 and SONET OC-48 system

Fiber Channel

Switch to Switch interface

Switched backplane applications

Router/Server interface

Other optical transmission systems

 

Description

The SFP-BIDI transceivers are high performance, cost effective modules supporting dual data-rate of 2.488Gbps/2.125Gbps and 20km 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.

 

Optical and Electrical Characteristics

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Transmitter

Centre Wavelength

λc

1260

1310

1360

nm

 

Spectral Width(-20dB)

∆λ

   

1

nm

 

SideModeSuppressionRatio

SMSR

30

   

dB

 

Average Output Power

Pout

-5

 

0

dBm

1

Extinction Ratio

ER

9

   

dB

 

Optical Rise/Fall Time(20%~80%)

tr/tf

   

0.16

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

1480

 

1580

nm

 

Receiver Sensitivity

     

-18

dBm

3

Receiver Overload

 

-3

   

dBm

3

LOS De-Assert

LOSD

   

-23

dBm

 

LOS Assert

LOSA

-30

   

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:

1. The optical power is launched into SMF.

2. PECL input, internally AC-coupled and terminated.

3. Measured with a PRBS 223-1 test pattern @2488Mbps, BER ≤1×10

4. Internally AC-coupled.

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