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Temperature-independent narrowband optical filter at 1.3 μm wavelength by an athermal waveguide

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3 Author(s)
Kokubun, Y. ; Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan ; Yoneda, S. ; Tanaka, H.

The authors report the realisation of a temperature independent narrowband optical filter at 1.3 μm wavelength. A ring resonator has been designed and fabricated using an athermal waveguide, in which the optical path length is independent of temperature. The temperature coefficient of the central wavelength was successfully reduced to 7×104 nm/K (7% of that of a conventional filter)

Published in:

Electronics Letters  (Volume:32 ,  Issue: 21 )