Micromachined in-plane tunable optical filter using thermo-optic effect

Sungsik Yun; Jong Hyun Lee

doi:10.1117/12.477918

21 January 2003 Micromachined in-plane tunable optical filter using thermo-optic effect

Sungsik Yun, Jong Hyun Lee

Proceedings Volume 4983, MOEMS and Miniaturized Systems III; (2003) https://doi.org/10.1117/12.477918
Event: Micromachining and Microfabrication, 2003, San Jose, CA, United States

Abstract

This paper presents, for the first time, a micromachined in-plane tunable optical filter (TOF) using thermo-optic effect for wavelength division multiplexed telecommunication. The TOFs are comprised of a Fabry-Perot silicon optical resonator formed between two distributed Bragg reflectors with high-reflectance based on silicon/air-gap pairs. The whole device was vertically fabricated using silicon deep reactive ion etching (DRIE). And input/output optical fibers were easily aligned along with the TOF structure on the substrate by exploiting in-plane fiber alignment. Tunability of the TOFs is experimentally achieved through thermal modulation of optical path length by heating the silicon resonator. As an input voltage increases, a notch of reflectance spectrum shifts to a longer wavelength with a tuning range of 9 nm and 3dB bandwidth of 2nm. The temperature of a silicon resonator was estimated to be about 93°C for the tuning range.

Citation Download Citation

Sungsik Yun and Jong Hyun Lee "Micromachined in-plane tunable optical filter using thermo-optic effect", Proc. SPIE 4983, MOEMS and Miniaturized Systems III, (21 January 2003); https://doi.org/10.1117/12.477918

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