Detailed Theoretical Model for Adjustable Gain-Clamped Semiconductor Optical Amplifier
Author(s) -
Lin Liu,
Craig Michie,
Anthony E. Kelly,
Ivan Andonović
Publication year - 2012
Publication title -
international journal of optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.263
H-Index - 17
eISSN - 1687-9392
pISSN - 1687-9384
DOI - 10.1155/2012/764084
Subject(s) - optical amplifier , automatic gain control , power (physics) , amplifier , linearity , high gain antenna , clamping , control theory (sociology) , electronic engineering , computer science , topology (electrical circuits) , physics , optics , engineering , telecommunications , laser , control (management) , electrical engineering , bandwidth (computing) , computer vision , quantum mechanics , artificial intelligence
The adjustable gain-clamped semiconductor optical amplifier (AGC-SOA) uses two SOAs in a ring-cavity topology: one to amplify the signal and the other to control the gain. The device was designed to maximize the output saturated power while adjusting gain to regulate power differences between packets without loss of linearity. This type of subsystem can be used for power equalisation and linear amplification in packet-based dynamic systems such as passive optical networks (PONs). A detailed theoretical model is presented in this paper to simulate the operation of the AGC-SOA, which gives a better understanding of the underlying gain clamping mechanics. Simulations and comparisons with steady-state and dynamic gain modulation experimental performance are given which validate the model
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