Polymer long-period waveguide grating with low temperature sensitivity

Qing Liu; Kin Seng Chiang; Kar Pong Lor

doi:10.1117/12.688349

3 October 2006 Polymer long-period waveguide grating with low temperature sensitivity

Qing Liu, Kin Seng Chiang, Kar Pong Lor

Proceedings Volume 6351, Passive Components and Fiber-based Devices III; 63510B (2006) https://doi.org/10.1117/12.688349
Event: Asia-Pacific Optical Communications, 2006, Gwangju, South Korea

Abstract

In this paper, we derive the general condition for the realization of a temperature-insensitive resonance wavelength of a long-period waveguide grating and present numerical examples for gratings formed in polymer channel waveguides. We show that, by controlling the thickness of the waveguide cladding, zero temperature sensitivity can be achieved with core and cladding materials that have significantly different thermo-optic coefficients. To verify our finding, we follow the temperature-insensitivity condition and fabricate a polymer grating with a core material that has a thermo-optic coefficient about twice as that of the cladding material. The temperature sensitivity of the fabricated grating is within ±0.15 nm/°C over a temperature range of ~15°C, which is more than an order of magnitude lower than those of previously reported gratings fabricated with the same materials.

Citation Download Citation

Qing Liu, Kin Seng Chiang, and Kar Pong Lor "Polymer long-period waveguide grating with low temperature sensitivity", Proc. SPIE 6351, Passive Components and Fiber-based Devices III, 63510B (3 October 2006); https://doi.org/10.1117/12.688349

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