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GAOTek SFP+ BIDI Transceiver with 10 Gb/s (80km)



This 10 Gigabit 1490nm and 1550nm SFP+ BIDI Transceiver is used with single mode optical fiber to reach up to 49.72 miles (80km) transmission distance. This Bidirectional enhanced small form-factor pluggable (SFP+ BIDI) transceiver offers high speed communication up to 11.3 Gb/s. It provides a unique enhanced digital diagnostic monitoring interface.It complies with SFF-8472, SFF-8431 and RoHS standards.

Key Features:

  • Up to 49.72 miles (80km) transmission
  • 1490nm EML laser and APD receiver
  • 1550nm EML laser and APD receiver
  • EEPROM with Serial ID Functionality
  • Single 3.3V power supply
  • Compliant with SFP+ MSA with LC connector
  • Metal enclosure, for lower EMI
  • management specifications compliant with SFF 8472
  • Hot-pluggable SFP+ footprint
  • Commercial Case operating temperature range from 14 °F to 158°F (-10°C to +70°C)
  • Industrial Case operating temperature range from -40 °F to 185 °F (-40°C to +85°C)
  • Low power dissipation:
      • 1.5W power dissipation for Commercial temperature
      • 1.8W power dissipation for Industrial temperature

Technical Specifications:

Protocol 2-Wire Serial communication Protocol
Working Range Up to 49.72 miles (80km)
Memory 256-byte memory map in EEPROM
Standards SFF-8431 and SFF-8472, RoHS compliant
Data rate 10Gb/s
Wavelength 1490nm,1550nm
Fiber Optic Cable 9/125um
Transmitter EML
Receiver APD
Connector LC
Transmitter output optical Power 0 dBm to 4 dBm

-1 dBm to 3 dBm

Receiver Sensitivity -23 dBm
Receiver Input Saturation Power -6 dBm
Supply Voltage 3.3V
Transmitter Input Differential Impedance 100Ω
Dimensions 2.26in x 0.54in x 0.47in (L 57.3mm x W13.7mm x H 11.9mm)
Relative Humidity 5% to 95%
Storage Temperature -40 °F to 185 °F (-40°C to 85°C)

Case Operating Temperature

Commercial 14 °F to 158°F (-10°C to +70°C)


Industrial -40 °F to 185 °F (-40°C to +85°C)


Additional Information:


Ideal to be used on applications such as

  • 10GBASE-BX

 Test Pattern:

  • Measured with a PRBS 231 -1 and BER<10-12 with data rate 10.3125Gb/s:

PRBS31 test pattern represents a pseudorandom binary sequence with a repetition period of 231 -1. The sequence is defined in IEEE STD 802.3.ae

BER<10-12   test represents bit error rate testing provides a measurable and useful indication of the performance of the system.

  • Case operating temperature is measured without airflow.

Ordering Information:

Product ID Media Wavelength


Transmission Distance


Temperature Range Supply Current
GAO-SFPPBD-101 Single-mode fiber 1490 TX/1550 RX 49.72miles (80km) Commercial

32°F to 158°F (0°C to +70°C)

GAO-SFPPBD-101A Single-mode fiber 1550 TX/1490 RX 49.72miles (80km) Commercial

32°F to 158°F (0°C to +70°C)

GAO-SFPPBD-101B Single mode fiber 1490 TX/1550 RX 49.72miles (80km) Industrial

-40 °F to 185 °F (-40°C to +85°C)

GAO-SFPPBD-101C Single-mode fiber 1550 TX/1490 RX 49.72miles (80km) Industrial

-40 °F to 185 °F (-40°C to +85°C)



Digital Diagnostics Functions:

  • GAOTek GAO-SFPPBD-101 series transceivers support the 2-wire serial communication protocol as defined in the SFP MSA.
  • Additionally, GAOTek SFP+ Transceivers provide a unique enhanced digital diagnostic monitoring interface which allows real-time access to device operating parameters such as transmitter optical power, receiver optical power, transceiver temperature, transceiver supply voltage and laser bias current. It defines an alarm system and warning flags, which alerts the end users when particular operating parameters are outside of a factory set normal range.
  • Standard SFP+ Serial id provides access to identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer and other information.
  • SFP+ MSA defines a 256-byte memory map in EEPROM that is accessible over a 2 wire serial interface at the 8 bit address 1010000X (A0h).
  • The operating and diagnostics information is monitored and reported by a Digital Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed through a 2-wire serial interface. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially

Electrical characteristics:

Parameter Symbol Min Type Max Unit
Differential line input Impedance RIN 80 100 120
Differential Data Input Voltage VDT 180 1200 mVp-p
Transmit Disable Voltage-High VDisH 2 Vcc+0.3 V
Transmit Disable Voltage-Low VDisL -0.3 0.8 V
Transmit Fault Output -High VFaultH 2.4 Vcc V
Transmit Fault Output-Low VFaultL -0.3 0.8 V
Differential data output Voltage VDR 300 850 mVp-p
Differential line Output Impedance ROUT 80 100 120 ohm
Receiver LOS Pull up Resistor RLOS 4.7 10 KOhm
Data Output Rise/Fall time tr/tf 24 ps
LOS Assert Level VLOS fault Vcc-1.3 VccHOST V
LOS De-assert Level VLOS norm Vee Vee+0.8 V

Optical Characteristics:

Parameter Symbol Min Type Max Unit Note
Average Launched Power PO 0 4 dBm
-1 3 dBm
Average Launched Power(Laser Off Poff -30 dBm
Center Wavelength Range λC λ-7.5 λ λ+7.5 nm 1
Optical Extinction Ratio ER 7.5 dB
Spectral Width(-20dB) σ 0.3 nm
Output Eye Mask Compliant with IEEE 802.3ae
Side-mode Supression ratio SMSR 30 dB
Receiver Sensitivity Psen -23 dBm
Input Optical Wavelength λIN 1480 1490 1500 nm
1540 1550 1560 nm
Input Saturation Power (Overload) Psat -6 dBm
LOS Assert LOSA -38 dBm
LOS De -Assert LOSD -24 dBm
LOS Hysteresis 0.5 8 dB


  1. λ is wavelength of room temperature

PIN out Diagram:

 PIN Descriptions:

Pin Symbol Name/Description Note
1 VEET Transmitter Ground (Common with Receiver Ground) 1
2 TFault Transmitter Fault 2
3 TDis Transmitter Disable. 3
4 SDA 2-wire Serial Interface Data Line 4
5 SCL 2-wire Serial Interface Clock Line 4
6 MOD_ABS Module Absent. Grounded within the module 5
7 RS0 Rate Select 0.  


8 LOS Loss of Signal indication. Logic 0 indicates normal operation 7
9 RS1 No connection required 1
10 VEER Receiver Ground (Common with Transmitter Ground) 1
11 VEER Receiver Ground (Common with Transmitter Ground) 1
12 RD- Receiver Inverted DATA out. AC coupled
13 RD+ Receiver Non-inverted DATA out. AC coupled
14 VEER Receiver Ground (Common with transmitter Ground) 1
15 VCCR Receiver power Supply
16 VCCT Transmitter Power supply
17 VEET Transmitter Ground (Common with receiver Ground) 1
18 TD+ Transmitter Non-Inverted DATA in. AC Coupled.
19 TD- Transmitter Inverted DATA in.AC Coupled.
20 VEET Transmitter Ground 1


  1. Circuit ground is internally isolated from ground.
  2. TFault is an open collector or drain output.
    • This should be pulled up with a 4.7k -10k ohms resistor on the host board if intended for use.
    • Pull up voltage should be between 2.0V to Vcc +0.3V.
    • High output indicates a transmitter fault caused by either the TX bias current or the TX output power exceeding the preset alarm thresholds.
    • Low output indicates normal operation. In the low state output is pulled to <0.8V
  3. Laser output disabled when it is open or TDis > 2.0V, enabled on TDis < 0.8V.
  4. Should be pulled up with 4.7kΩ to 10kΩ on host board to a voltage between 2.0V and 3.6V.
  5. MOD_ABS pulls the line low to indicate the module is plugged in.
  6. Internally pulled down per SFF-8431
  7. Loss of signal is open collector output.
  • This should be pulled up with 4.7 kΩ to 10 kΩ on host board to a voltage between 2.0V and 3.6V.
  • Logic 0 indicates normal operation.
  • Logic 1 indicates loss of signal.

Mechanical Specifications:

Improved Pluggable form factor specification Comply to SFF-8432

Host – Transceiver Interface Block Diagram:

Regulatory Compliance:

Feature Reference Performance
Laser Eye Safety FDA 21CFR 1040.10, 1040.11 IEC/EN 60825-1,2 Class 1 laser product
Component Recognition IEC/EN 60950, UL Compatible with standards
ROHS 2002/95/EC Compatible with standards
Electrostatic discharge(ESD) IEC/EN 61000-4-2 Compatible with standards
EMC EN61000-3 Compatible with standards
Electromagnetic Interference(EMI) FCC Part 15 Class B EN 55022 Class B (CISPR 22A) Compatible with standards

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