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Optimum light transmission via microring resonator under a lossy‐coupler critical coupling condition
Author(s) -
Bahadoran Mahdi,
Yupapin Preecha,
Amiri Iraj Sadegh
Publication year - 2021
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.32601
Subject(s) - signal flow graph , resonator , coupling coefficient of resonators , coupling (piping) , materials science , coupling loss , lossy compression , transmission loss , optoelectronics , optics , physics , optical fiber , engineering , computer science , electrical engineering , artificial intelligence , metallurgy
The optical transfer function is derived for add‐drop resonator (ADR) using the signal flow graph method. A critical coupling condition is calculated in the presence of loss in the coupling regions. Effect of critical coupling and coupler loss in the light transmission is studied. A limited area was determined for optimum optical transmission of ADR. We introduced a semi‐empirical equation to correlate the geometric design of coupling gap with the coupling strength parameters (coupling coefficient, k , and coupling loss, γ ). Achieved results can be used in optical communication technology and the photonic sensor applications.