40 GHz Lightwave Transmitter Board for OEM (LTB-40)

Data Sheet

Product Overview

The Optilab LTB-40 is a high performance Lightwave Transmitter Board designed for analog photonics applications from DC to 40 GHz. This unit includes a 32 GHz optical intensity modulator and an Automatic Bias Control (ABC) board with four different operating modes. The external laser source can be any polarization maintaining device, such as tunable laser, narrow line width laser, making it a versatile solution for OEM-based system integration.


  • Analog photonics
  • 40 GHz RFoF transmission
  • RF/IF Signal Distribution
  • Satellite Communication
  • Optical communications to 43 Gb/s
  • Sub-nanosecond pulse generation


  • 32 GHz S21 bandwidth modulator
  • 1520 nm to 1610 nm wavelength range
  • Automatic Bias Control w/ 4 mode operation
  • Internal DFB laser up to 50 mW
  • Customizable options: Low Drive Voltage, PM Output, High Extinction Ratio (>30 dB), Temperature Qualified (-55 °C to +75 °C)

Feature Name Description
General Specifications
Operating Wavelength 1520 nm to 1610 nm
Laser Source Internal DFB laser, 1550nm±10 nm; other wavelegth and narrow linewidth <1 MHz are available
Laser Power Level 20 mW, 30 mW, 40 mW, 50 mW
RF Return Loss >15 dB @ 10 GHz; >10 dB @ 30 GHz
Impedance 50 Ω
Operating Frequency Range DC to 40 GHz
Input RF Voltage 27 dBm max.
Optical Output Level 6.5 dBm @ +14 dBm input typ.
S21 Bandwidth 3 dB, 2 GHz to 32 GHz typ.
Modulator Bias Mode 4 Automatic bias control modes, selectable by software
Extinction Ratio 25 dB typ.; >30 dB (HE version)
Modulator Voltage VPI 6.4 V typ. @10 GHz, 8.3 V typ. @30 kHz; 2.5 V typ. @10 GHz, 4.3 V typ. @30 GHz (LD Version)
Analog Link Performance
IIP3 @7 GHz 29 dBm typ.; 25 dBm typ. (LD version)
1 dB Conpression Point @10 GHz 16 dBm typ.; 8 dBm typ. (LD version)
Mechanical Specifications
Operating Temperature (Standard) -30 °C to +60 °C
Operating Temperature (TQ) -55 °C to +75 °C
Storage Temperature -60 °C to +90 °C
Power Supply Requirements ±5V, 1A typ.
Optical Connectors FC/APC
Fiber Type SMF-28 output; PANDA output (PM version)
RF Input Connector K connector; GPPO or V connector (LD version)
Power Connector 4 Pin Molex
Remote Control USB 2.0 software included
Alarm LED Bias mode status
Dimensions 206 mm x 102.4 mm x 31.5 mm

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