20 GHz Photodiode, High Input Power to 100 mW (PD-20-HP-M)

Data Sheet

Product Overview

The Optilab PD-20-HP-M is a 20 GHz highly linear photodiode module designed for RF over Fiber, antenna remoting, and broadband RF transmission applications using optical fiber. It can accept optical input power levels of up to 100 mW and keep linear operation to 50 mW input level. With high input power, PD-20-HP-M can be used to replace TIA-based photoreceiver. This compact, cost-effective receiver module can provide users with status monitoring through a USB 2.0 port. When the PD-20-HP-M RF over fiber receiver module is linked with the LTA series of transmitter modules, the combination provides an excellent solution for wideband RF to fiber conversion applications.


  • Wideband RF Transmission over Fiber
  • RF/IF Signal Distribution
  • Satcom Microwave Antenna Signal Distribution
  • Broadband Delay-line and Signal Processing
  • LIDAR Receivers
  • Phased and Interferometric Array Antenna


  • Bandwidth up to 20 GHz
  • High Dynamic Range
  • High Input Power handling of 100 mW
  • Staying Linear up to 50 mW
  • Up to 50 mA detector
  • Link gain of-5 dB@10 GHz, @16 dBm input

Feature Name Description
General Specifications
Photodiode Wavelength Range 1450 nm to 1610 nm
Optical Input Level 100 mW max.
S21 3 dB Bandwidth 17 GHz min., 20 GHz typ.
S22 Characteristics < -10 dB @ 20 GHz
Low Frequency Cut off 60 KHz
Repsonsitivity 0.95 A/W @ 1550 nm typ.
Dark Current @ 25° C, 5 V 50 nA typ., 100 nA max.
Optical Return Loss -30.0 dB typ.
Optical PDL @ 1550 nm 0.2 dB max.
Optical Fiber SMF-28
Impedence 50 Ω
Coupling AC-Coupled
Analog Applications
Ripple over any 1 GHz ±1.0 dB max.
Group Delay < 7.0 ps
2nd Harmonics Distortion -70.0 dBc max.
3rd Harmonics Distortion -75.0 dBc max.
Link Performance with LTA-20
SFDR 113 dB Hz2/3
Link Loss -11 dB @ 17 dBm Optical Input
Mechanical Specifications
Operating Temperature -10 ºC to +60 ºC
Storage Temperature -55 ºC to +75 ºC
Operating Humidity 85%
Power Supply Requirements +5 V DC, 500 mA max.
Optical Connector FC/APC, SC/APC Optional
RF Input Connector K Connector Female, 50 Ω
Local Alarm LED: Optional Input Power
Remote Alarms RS-232 Interface (Standard) via USB
Dimensions 90 mm x 80 mm x 22 mm
Accessories Included 110 V - 240 V AC USB Adaptor & Cable
Housing Precision Mach. Anodized Aluminum

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