Open AccessAn All‐Optical Gain‐Controlled Amplifier for Bidirectional Transmission
Author(s) -
Choi BoHun,
Hong KyungJin,
Kim ChangBong,
Won Yong Hyub
Publication year - 2006
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.06.0105.0084
Subject(s) - optical amplifier , automatic gain control , transmission (telecommunications) , amplifier , signal (programming language) , fiber bragg grating , optical performance monitoring , noise (video) , low noise amplifier , electronic engineering , physics , optics , wavelength division multiplexing , computer science , optical fiber , engineering , telecommunications , wavelength , laser , cmos , artificial intelligence , image (mathematics) , programming language
A novel all‐optical gain‐controlled (AOGC) bidirectional amplifier is proposed and demonstrated in a compact structure. The AOGC function using fiber Bragg grating (FBG) pairs controls both directional signals independently, and combinations of optical interleavers and isolators suppress Rayleigh backscattering (RB) noise. The amplifier achieves high and constant gain with a wide dynamic input signal range and low noise figure. The performance does not depend on the input signal conditions, whether static‐state or transient signals, or whether there is symmetric or asymmetric data traffic on bidirectional transmission. Transmission comparison experiments between invariable symmetrical and random variable asymmetric bidirectional data traffic verify that the all‐optical gain control and bidirectional amplification functions are successfully combined into this proposed amplifier.