Resonant-wavelength tuning of a pitch-variable 1-D photonic crystal filter at telecom frequencies

Yoshiaki Kanamori; Naoki Matsuyama; Kazuhiro Hane

doi:10.1109/LPT.2008.924655

Resonant-wavelength tuning of a pitch-variable 1-D photonic crystal filter at telecom frequencies

Yoshiaki Kanamori, Naoki Matsuyama, Kazuhiro Hane

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

We propose pitch-variable guided resonance filters for continuous resonant-wavelength tuning at telecom frequencies. Since the optical response is affected by not only the grating period but also the filling factor, in consideration of these parameters, the filter is designed to be tuned smoothly to a selective wavelength by using comb-drive actuators. The grating with the initial period of 860 nm is fabricated with high accuracy. When the grating is expanded, the resonant wavelength shifts to longer wavelength continuously as expected by the calculation.

Original language	English
Pages (from-to)	1136-1138
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	20
Issue number	13
DOIs	https://doi.org/10.1109/LPT.2008.924655
Publication status	Published - 2008 Jul 1

Keywords

Microelectromechanical devices
Optical device fabrication
Optical gratings
Tunable filters

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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title = "Resonant-wavelength tuning of a pitch-variable 1-D photonic crystal filter at telecom frequencies",

abstract = "We propose pitch-variable guided resonance filters for continuous resonant-wavelength tuning at telecom frequencies. Since the optical response is affected by not only the grating period but also the filling factor, in consideration of these parameters, the filter is designed to be tuned smoothly to a selective wavelength by using comb-drive actuators. The grating with the initial period of 860 nm is fabricated with high accuracy. When the grating is expanded, the resonant wavelength shifts to longer wavelength continuously as expected by the calculation.",

keywords = "Microelectromechanical devices, Optical device fabrication, Optical gratings, Tunable filters",

author = "Yoshiaki Kanamori and Naoki Matsuyama and Kazuhiro Hane",

note = "Funding Information: Manuscript received March 5, 2008; revised April 6, 2008. This work was supported in part by GASR (17068002) and in part by the Micro/Nano-Machining Research and Education Center in Tohoku University, Japan. The authors are with the Department of Nanomechanics, Tohoku University, Sendai 980-8579, Japan (e-mail: kanamori@hane.mech.tohoku.ac.jp). Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2008.924655 Fig. 1. Conceptual diagram of tunable wavelength-selective filters based on pitch-variable GR filters at (a) the initial state and (b) the expanding state. The d, , and x show the initial groove width, the grating period, and the pitch variation, respectively.",

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doi = "10.1109/LPT.2008.924655",

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AU - Kanamori, Yoshiaki

AU - Matsuyama, Naoki

AU - Hane, Kazuhiro

N1 - Funding Information: Manuscript received March 5, 2008; revised April 6, 2008. This work was supported in part by GASR (17068002) and in part by the Micro/Nano-Machining Research and Education Center in Tohoku University, Japan. The authors are with the Department of Nanomechanics, Tohoku University, Sendai 980-8579, Japan (e-mail: kanamori@hane.mech.tohoku.ac.jp). Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2008.924655 Fig. 1. Conceptual diagram of tunable wavelength-selective filters based on pitch-variable GR filters at (a) the initial state and (b) the expanding state. The d, , and x show the initial groove width, the grating period, and the pitch variation, respectively.

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AB - We propose pitch-variable guided resonance filters for continuous resonant-wavelength tuning at telecom frequencies. Since the optical response is affected by not only the grating period but also the filling factor, in consideration of these parameters, the filter is designed to be tuned smoothly to a selective wavelength by using comb-drive actuators. The grating with the initial period of 860 nm is fabricated with high accuracy. When the grating is expanded, the resonant wavelength shifts to longer wavelength continuously as expected by the calculation.

KW - Microelectromechanical devices

KW - Optical device fabrication

KW - Optical gratings

KW - Tunable filters

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Resonant-wavelength tuning of a pitch-variable 1-D photonic crystal filter at telecom frequencies

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