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Kwon, Min-Suk
Ubiquitous Photonics Laboratory (UP Lab)
Research Interests
  • Photonics, plasmonics, waveguides, planar lightwave circuits

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Tunable notch filter using a thermooptic long-period grating

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Title
Tunable notch filter using a thermooptic long-period grating
Author
Kwon, Min-SukShin, SY
Keywords
gratings; integrated optics; optical waveguide filters; thermooptic effects
Issue Date
2004-08
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
JOURNAL OF LIGHTWAVE TECHNOLOGY, v.22, no.8, pp.1968 - 1975
Abstract
This paper proposes a tunable notch filter using a thermooptic long-period grating and investigates it theoretically. This notch filter is in the form of an integrated optical device and is based, on a simple structure as compared with existing integrated optical notch filters. The thermooptic grating denotes a thermooptic index perturbation induced by. periodic heaters. The attenuation of a resonance band in the transmission spectrum of the proposed notch filter can be controlled by adjusting the electric power applied to the periodic heaters. Employing the heat transfer theory and the coupled-mode theory, the proposed filter is designed and analyzed. The paper also presents analytic expressions for the temperature change due to a heater and the coupling coefficients due to the thermooptic grating. This filter may have potential as a compact dynamically controllable device like a tunable gain flattening filter.
URI
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DOI
10.1109/JLT.2004.833306
ISSN
0733-8724
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EE_Journal Papers
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