Gain Flattened Inline EDFA with Mid-stage Access (EDFA-GM-R)

Data Sheet

Product Overview

The Optilab EDFA-GM-R is a line of gain-flattening EDFA designed for optical amplification in DWDM networks. The EDFA-GM-R is typically used as an intermediate point in the network to increase the DWDM channel power levels, with the ability to amplify input signals as low as -18 dBm per channel. Featuring a dual-stage design with mid-stage access, the EDFA-GM-R can be fitted with Dispersion Compensation Modules (DCM) to reduce distortion due to effects of chromatic dispersion that occurs in single-mode fiber (SMF). The mid-stage access can also be used for installing Optical Add/Drop Module (OADM). The EDFA-GM-R provides flattened optical gain and low noise figures for optimum DWDM signal amplification. Various output power levels are available (ranging from +18 to +24 dBm) to provide maximum flexibility for network design and implementation. The Optilab EDFA and Raman amplifiers can provide an optimal solution for DWDM network optical amplification based on channel and transmission distance requirements. The EDFA-GM-R can be used in conjunction with Optilab EDFA-GB-R Booster EDFAs and RA-R Raman amplifiers to significantly increase the transmission distance and quality of DWDM signals. All Optilab DWDM EDFA products are constructed with 100% Telcordia qualified components to ensure 15 years of continuous operating life.


  • Laboratory Test and Measurement
  • Test Instrumentation
  • R&D


  • Compatible with 10G/40G DWDN Networks
  • Flat gain spectrum across C-band
  • Mid-stage access for DCM or OADM
  • Power levels +18 dBm to +24 dBm
  • High reliability Telcordia qualified components

Feature Name Description
Optical Specifications
Operating Wavelength Range 1530 nm to 1560 nm
Output Power Levels +18 dBm to +24 dBm
Input Signal Level -18 to 0 dBm per channel
Number of Channels 42 at 100 GHz
Optical Gain per Channel +23 to 28 dB, depending on configuration
Gain Flatness ±1.0 dB
Noise Figure 5.0 dB typ.
Loss Budget for Mid-stage Device 9 dB
Polarization Dependent Gain (PDG) 0.2 dB max.
Polarization Mode Dispersion (PMD) 0.5 ps max.
Power Stability ± 0.1 dB over 8 hours
Input/Output Isolation 30 dB min.
Mechanical Specifications
Operating Temperature 0º C to +50º C
Storage Temperature -40º C to +70º C
Power Supply Requirements 80 - 240 V, 43 - 63 Hz AC
Power Consumption 75 W max.
Control Pump Laser Current Adjustment
Monitoring Pump Laser Temperature
Computer Interface RS-232 (Optional)
Display Output Power Level, TEC Temperature
Alarms Temperature and Current Threshold
Optical Connectors FC/APC, SC/APC
Housing Dimensions 1U Rack: 19” x 14” x 1.75”

Product Requests and Consulting

If you would like more information about Optilab Products or Custom Solutions, please Submit a Product Request.

If you'd like to contact Optilab directly, you can reach a sales representative by email (JavaScript must be enabled to view this email address).