Temperature-independent optical filter at 1.55 [micro sign]m wavelength using a silica-based athermal waveguide | Zendy

Yasuo Kokubun | Zendy; Shigeru Yoneda | Zendy; Shinnosuke Matsuura | Zendy

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Temperature-independent optical filter at 1.55 [micro sign]m wavelength using a silica-based athermal waveguide

Author(s) -

Yasuo Kokubun,

Shigeru Yoneda,

Shinnosuke Matsuura

Publication year - 1998

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

eISSN - 1350-911X

pISSN - 0013-5194

DOI - 10.1049/el:19980245

Subject(s) - wavelength , waveguide , materials science , filter (signal processing) , sign (mathematics) , optics , optical filter , optical path length , optical path , optoelectronics , physics , mathematics , mathematical analysis , computer science , computer vision

The temperature dependence of the central wavelength of narrow-band filters is a serious problem for the dense WDM systems. In this study, we realized a temperature independent narrow-band filter at 1.3μm wavelength. First, we designed an athermal waveguide in which optical path length is independent of temperature by using a finite element method. Using this athermal waveguide, we designed and fabricated a ring resonator. As a result, we successfully decreased the temperature coefficient of central wavelength to 7 × 10-4 nm/K, which is 7% of conventional SiC_2 waveguide filters and 0.7% of conventional semiconductor waveguide filters

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