Polarization-independent coupled-waveguide grating filters

Qing Guo; Wei-Ping Huang

doi:10.1117/12.265366

30 January 1997 Polarization-independent coupled-waveguide grating filters

Qing Guo, Wei-Ping Huang

Proceedings Volume 2918, Emerging Components and Technologies for All-Optical Photonic Systems II; (1997) https://doi.org/10.1117/12.265366
Event: Photonics East '96, 1996, Boston, MA, United States

Abstract

Theoretical analysis and design principles for a polarization-independent optical wavelength filter based on phase-shifted gratings are developed and presented. Side- lobe suppression is demonstrated by chirping the ratio of the length of phase-shifted section to that of grating section. A design guideline is explained for the polarization-independent filter with side-lobe suppression. It is shown that identical spectral responses for the two polarizations can be achieved despite the polarization- dependent coupling strengths. Tunability of such devices is studied, and the polarization-dependent modal loss is discussed at last.

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Qing Guo and Wei-Ping Huang "Polarization-independent coupled-waveguide grating filters", Proc. SPIE 2918, Emerging Components and Technologies for All-Optical Photonic Systems II, (30 January 1997); https://doi.org/10.1117/12.265366

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KEYWORDS

Waveguides

Optical filters

Polarization

Birefringence

Optical design

Silver

Tunable filters

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