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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… Click to show full abstract
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.
Journal Title: Microwave and Optical Technology Letters
Year Published: 2020
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