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6 September 2012 Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers
Shih-Jung Chang, Kuo-Wei Liu
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Optical Engineering, Vol. 51, Issue 9, 094603 (September 2012). https://doi.org/10.1117/1.OE.51.9.094603
Abstract
An optical 3 dB coupler based on cascaded three-stage directional couplers is proposed. The optical coupler with a finite impulse response on optical power is able to provide a stable 50% splitting ratio. The influence of the waveguide gap, width of each waveguide, and coupling length on the performance of the proposed coupler is illustrated. The numerical analysis and results show the reported coupler with less sensitivity to such fabrication variations. The proposed optical coupler could also be designed with any stable splitting ratio for optical communication applications.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2012/$25.00 © 2012 SPIE
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Shih-Jung Chang and Kuo-Wei Liu "Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers," Optical Engineering 51(9), 094603 (6 September 2012). https://doi.org/10.1117/1.OE.51.9.094603
Published: 6 September 2012
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Cited by 3 scholarly publications.
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KEYWORDS
Waveguides
Directional couplers
Silicon
Optical filters
Wave propagation
Numerical analysis
Optical communications
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