Transmission wavelength shift of +36 nm observed with Ta2O5-SiO2 multichannel wavelength filters consisting of three-dimensional photonic crystals

H. Ohkubo; Y. Ohtera; S. Kawakami; T. Chiba

doi:10.1109/LPT.2004.826232

Transmission wavelength shift of +36 nm observed with Ta₂O₅-SiO₂ multichannel wavelength filters consisting of three-dimensional photonic crystals

H. Ohkubo, Y. Ohtera, S. Kawakami, T. Chiba

ENG - Communications Engineering

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

7 Citations (Scopus)

Abstract

We have developed multichannel wavelength filters consisting of three-dimensional photonic crystals, which have multiple filter regions with difference transmission wavelengths according to differences in the in-plane lattice constants of the crystals. In this study, we improved the design of the photonic crystal (PC) filters by making use of the photonic-bandgap edge and fabricated PC filters with a Ta₂O₅-SiO₂ material system. This improvement enabled us to obtain a transmission wavelength shift of +36 nm at 1550 nm, which agrees well with the results of finite-difference time-domain simulations. By connecting the multichannel wavelength filters to a 100-GHz-spaced 40-channel arrayed waveguide grating (AWG), we suppressed the crosstalk in the AWG from -40 dB to less than -60 dB.

Original language	English
Pages (from-to)	1322-1324
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	16
Issue number	5
DOIs	https://doi.org/10.1109/LPT.2004.826232
Publication status	Published - 2004 May 1

Keywords

Bandpass filters
Cavity resonators filters
Finite-difference time-domain (FDTD) methods
Gratings
Optical crosstalk
Wavelength-division multiplexing (WDM)

ASJC Scopus subject areas

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

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title = "Transmission wavelength shift of +36 nm observed with Ta2O5-SiO2 multichannel wavelength filters consisting of three-dimensional photonic crystals",

abstract = "We have developed multichannel wavelength filters consisting of three-dimensional photonic crystals, which have multiple filter regions with difference transmission wavelengths according to differences in the in-plane lattice constants of the crystals. In this study, we improved the design of the photonic crystal (PC) filters by making use of the photonic-bandgap edge and fabricated PC filters with a Ta2O5-SiO2 material system. This improvement enabled us to obtain a transmission wavelength shift of +36 nm at 1550 nm, which agrees well with the results of finite-difference time-domain simulations. By connecting the multichannel wavelength filters to a 100-GHz-spaced 40-channel arrayed waveguide grating (AWG), we suppressed the crosstalk in the AWG from -40 dB to less than -60 dB.",

keywords = "Bandpass filters, Cavity resonators filters, Finite-difference time-domain (FDTD) methods, Gratings, Optical crosstalk, Wavelength-division multiplexing (WDM)",

author = "H. Ohkubo and Y. Ohtera and S. Kawakami and T. Chiba",

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T1 - Transmission wavelength shift of +36 nm observed with Ta2O5-SiO2 multichannel wavelength filters consisting of three-dimensional photonic crystals

AU - Ohkubo, H.

AU - Ohtera, Y.

AU - Kawakami, S.

AU - Chiba, T.

PY - 2004/5/1

Y1 - 2004/5/1

N2 - We have developed multichannel wavelength filters consisting of three-dimensional photonic crystals, which have multiple filter regions with difference transmission wavelengths according to differences in the in-plane lattice constants of the crystals. In this study, we improved the design of the photonic crystal (PC) filters by making use of the photonic-bandgap edge and fabricated PC filters with a Ta2O5-SiO2 material system. This improvement enabled us to obtain a transmission wavelength shift of +36 nm at 1550 nm, which agrees well with the results of finite-difference time-domain simulations. By connecting the multichannel wavelength filters to a 100-GHz-spaced 40-channel arrayed waveguide grating (AWG), we suppressed the crosstalk in the AWG from -40 dB to less than -60 dB.

AB - We have developed multichannel wavelength filters consisting of three-dimensional photonic crystals, which have multiple filter regions with difference transmission wavelengths according to differences in the in-plane lattice constants of the crystals. In this study, we improved the design of the photonic crystal (PC) filters by making use of the photonic-bandgap edge and fabricated PC filters with a Ta2O5-SiO2 material system. This improvement enabled us to obtain a transmission wavelength shift of +36 nm at 1550 nm, which agrees well with the results of finite-difference time-domain simulations. By connecting the multichannel wavelength filters to a 100-GHz-spaced 40-channel arrayed waveguide grating (AWG), we suppressed the crosstalk in the AWG from -40 dB to less than -60 dB.

KW - Bandpass filters

KW - Cavity resonators filters

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KW - Gratings

KW - Optical crosstalk

KW - Wavelength-division multiplexing (WDM)

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