Open AccessDesign of Rugate filter for gain narrowing compensation
Author(s) -
Z. H. Lei,
Sui Zhan,
Qihua Zhu,
Ying Zhang,
Yanlei Zuo
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.3977
Subject(s) - compensation (psychology) , optics , filter (signal processing) , amplifier , sapphire , materials science , optical filter , matrix (chemical analysis) , optoelectronics , computer science , physics , laser , composite material , psychology , cmos , psychoanalysis , computer vision
Two Rugate filters for compensating gain narrowing are designed separately based on the gain characteristics of Ti: sapphire amplifier and Nd: glass amplifier. The Gauss spectral shaping function is selected as the compensation modulation function. Characteristic matrix method is used to analyse the spectral response of the Rugate filter approximately. Amplification using Rugate filter spectral compensation is analysed numerically. Results show that they satisfy the compensation requirements well and can be used as the spectral compensation filters.