GAOTek XFP Tunable Transceiver with 10Gb/s

This 10 Gigabit XFP (small form-factor pluggable) Tunable Transceiver is used with single mode optical fiber to reach up to 49.72 miles (80km) transmission distance.



This 10 Gigabit XFP (small form-factor pluggable) Tunable Transceiver is used with single mode optical fiber to reach up to 49.72 miles (80km) transmission distance. It has a monolithically integrated full C-band tunable type transmitter and an APD transceiver. It provides a unique enhanced digital diagnostic monitoring interface. It complies with the ITU-T G.698.1 standard with 50 GHz channel spacing for SONET/SDH.

Key Features:

  • Up to 49.72 miles (80km) transmission distance.
  • Supports 9.95Gb/s to 11.3Gb/s bit rates
  • Monolithically integrated full C-band tunable transmitter and APD receiver
  • 50 GHz ITU channel spacing with integrated wavelength locker
  • Full Duplex LC connector
  • Hot-pluggable XFP footprint
  • Supports Line-side and XFI loopback
  • No Reference Clock required
  • Built-in digital diagnostic functions
  • Standard bail release mechanism
  • Power dissipation <3.5W
  • Case operating temperature range from 32 °F to 158 °F (0°C to 70°C).

Technical Specifications:

Working RangeUp to 49.72 miles (80km)
Memory256-byte memory map in EEPROM
StandardsXFP MSA (INF-8077i) and SFF-8477.                             ITU-T G.698.1.
Data rate10 Gb/s
Single Mode Fiber9/125um
TransmitterC-band-tunable transmitter
Wavelength range1528.77nm to 1563.45nm
Center Wavelength Spacing50 GHz
Transmitter output optical Power-1 dBm to 3 dBm
Receiver Input Saturation Power-7 dBm
Supply Voltage3.3V
Power Consumption<3.5W
Transmitter Input Differential Impedance100Ω
Dimensions3.07in x 0.72in x 0.45in (L 78mm x W18.3mm x   H 11.4mm)
Relative humidity5% to 85%
Storage Temperature-40 °F to 185 °F (-40°C to 85°C)
Case Operating Temperature32 °F to 158 °F (0°C to 70°C)

Additional Information:


Ideal to be used on applications such as

  • DWDM 80KM 10G Fiber Channel
  • DWDM 10GBASE-ZR/ZW 10G Ethernet

Order Information:

Product IDMediaWavelength


Transmission DistanceTemperature Range
GAO-XFPT-101single-mode fiberRefer to wavelength Selection49.72 miles (80km)Commercial

32 °F to 158 °F (0°C to 70°C)

Wavelength Selection:

Wavelength Table

41562.23191.90471544.92194. 05
51561.83191.95481544.53194. 10
61561.42192.00491544.13194. 15
71561.01192.05501543.73194. 20
81560.61192.10511543.33194. 25
91560.20192.15521542.94194. 30
101559.79192.20531542.54194. 35
111559.39192.25541542.14194. 40
121558.98192.30551541.75194. 45
131558.58192.35561541.35194. 50
141558.17192.40571540.95194. 55
151557.77192.45581540.56194. 60
161557.36192.50591540.16194. 65
171556.96192.55601539.77194. 70
181556.55192.60611539.37194. 75
191556.15192.65621538.98194. 80
201555.75192.70631538.58194. 85
211555.34192.75641538.19194. 90
221554.94192.80651537.79194. 95
231554.54192.85661537.40195. 00
241554.13192.90671537.00195. 05
251553.73192.95681536.61195. 10
261553.33193.00691536.22195. 15
271552.93193.05701535.82195. 20
281552.52193.10711535.43195. 25
291552.12193.15721535.04195. 30
301551.72193.20731534.64195. 35
311551.32193.25741534.25195. 40
321550.92193.30751533.86195. 45
331550.52193.35761533.47195. 50
341550.12193.40771533.07195. 55
351549.72193.45781532.68195. 60
361549.32193.50791532.29195. 65
371548.91193.55801531.90195. 70
Non-ITUPeak wavelength between 1528.77nm-1563.45nm871529.16196.05

Digital Diagnostics Functions:

  • GAOTek GAO- XFPT -101 transceivers support the 2-wire serial communication protocol as defined in the XFP MSA.
  • Additionally, GAOTek XFP 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 XFP Serial id provides access to identification information that describes the transceiver’s capabilities, standard interfaces, manufacturer and other information.
  • XFP 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:

Module Total Power   3.5W1
Input Differential ImpedanceRin1002
Single ended data input swingVin, pp120820mV
Transmit Disable VoltageVD2.0VccV
Transmit Enable VoltageVenGNDGND+ 0.8V
Differential data output swingVout,pp340650850mV3
LOS FaultVLOS faultVcc–0.5VccHOSTV4
LOS NormalVLOS normGNDGND+0.5V4


  1. Maximum total power value is specified across the full temperature and voltage range.
  2. After internal AC coupling.
  3. Into 100 ohms differential termination.
  4. Loss of Signal is open collector to be pulled up with a 4.7kΩ – 10kΩ resistor to 3.15 – 3.6V.
  • Logic 0 indicates normal operation.
  • Logic 1 indicates no signal detected.

Optical Characteristics:

Average Optical  PowerPAVE-13dBm
Optical Wavelengthλλc -0.05λc +0.5nm
Wavelength range1528.771563.45nm
Center Wavelength Spacing50GHz
Optical Extinction RatioER9dB
Frequency stability (BOL)-1.51.5GHz
Frequency stability (EOL)-2.52.5GHz
Transmitter and Dispersion PenaltyTDP3dB
Average Launch power OFF transmitterPOFF-30dBm
Side mode Suppression ratioSMSR30dB
Tx JitterTxjPer 802.3ae requirements
Receiver SensitivityPSEN-24dBmBack to back ,2
-21.5dBmFiber(-300 to 1450ps/nm)
Wavelength RangeλC12601600nm
Input Saturation Power (Overload)Psat-7dBm
Receiver ReflectanceRrx-27dB
LOS AssertLOSA-37dBm
LOS De -AssertLOSD-27dBm
LOS Hysteresis0.5dB

PIN Diagram:

PIN Descriptions:

1GNDModule Ground1
2VEE5Optional –5.2 Power Supply – Not required
3LVTTL-IMod-DeselModule De-select; When held low allows the module to respond to 2-wire serial interface commands
4LVTTL-OInterruptInterrupt (bar); Indicates presence of an important condition which can be read over the serial 2-wire interface3
5LVTTL-ITX_DISTransmitter Disable; Transmitter laser source turned off
6VCC5+5 Power Supply
7GNDModule Ground1
8VCC3+3.3V Power Supply
9VCC3+3.3V Power Supply
10LVTTL-ISCLSerial 2-wire interface clock
11LVTTL-I/OSDASerial 2-wire interface data line3
12LVTTL-OMod_AbsModule Absent; Indicates module is not present. Grounded in the module.3
13LVTTL-OMod_NRModule Not Ready; GAOTek defines it as a logical OR between RX_LOS and Loss of Lock in TX/RX.3
14LVTTL-ORX_LOSReceiver Loss of Signal indicator3
15GNDModule Ground1
16GNDModule Ground1
17CML-ORD-Receiver inverted data output
18CML-ORD+Receiver non-inverted data output
19GNDModule Ground1
20VCC2+1.8V Power Supply – Not required
21LVTTL-IP_Down/RSTPower Down; When high, places the module in the low power stand-by mode and on the falling edge of P_Down initiates a module reset


Reset; The falling edge initiates a complete reset of the module including the 2-wire serial interface, equivalent to a power cycle.
22VCC2+1.8V Power Supply – Not required
23GNDModule Ground1
24PECL-IRefCLKReference Clock non-inverted input, AC coupled on the host board –Not required2
25PECL-IRefCLK-Reference Clock inverted input, AC coupled on the host board – Not required2
26GNDModule Ground1
27GNDModule Ground1
28CML-ITD-Transmitter inverted data input
29CML-ITD+Transmitter non-inverted data input
30GNDModule Ground1


  1. Module circuit ground is isolated from module chassis ground within the module.
  2. A Reference Clock input is not required .If present, it will be ignored.
  3. Open collector; should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 3.15V and 3.6V

PCB Layout and Bezel Recommendations:

XFP Host Board Mechanical Layout (dimensions are in mm)

Mechanical Specifications:

GAOTek’s XFP transceivers are compliant with the dimensions defined by the XFP Multi-Sourcing Agreement (MSA).

XFP transceiver (dimensions are in mm)

Regulatory Compliance:

Laser Eye SafetyFDA 21CFR 1040.10, 1040.11 IEC/EN 60825-1,2Class 1 laser product
Component RecognitionIEC/EN 60950, ULCompatible with standards
ROHS2002/95/ECCompatible with standards
Electrostatic discharge(ESD)IEC/EN 61000-4-2Compatible with standards
EMCEN61000-3Compatible with standards
Electromagnetic Interference(EMI)FCC Part 15 Class B EN 55022 Class B (CISPR 22A)Compatible with standards