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Parallel‐coupled phase‐matched multiring optical filters
Author(s) -
Schwelb Otto,
Frigyes István
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.20689
Subject(s) - passband , stopband , ripple , elliptic filter , band pass filter , insertion loss , microwave , phase (matter) , transition band , optics , fabrication , filter (signal processing) , coupling (piping) , physics , matching (statistics) , phase matching , topology (electrical circuits) , materials science , prototype filter , computer science , engineering , low pass filter , mathematics , telecommunications , electrical engineering , alternative medicine , voltage , pathology , quantum mechanics , metallurgy , medicine , statistics , laser
A periodic bandpass filter that is based on the phase‐matching principle and consists of several parallel‐coupled microrings is presented. The rings are identical in size; the coupling coefficients are chosen to provide maximally flat or equal ripple passband. Simulated filter characteristics exhibit steep roll‐off and large stopband rejection. Expressions are given to estimate the passband insertion loss and the stopband rejection level. The effects of loss and fabrication tolerances is examined. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 44: 536–540, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20689