Design of a Wavelength Demultiplexer Based on a Bent Waveguide Coupler Using the Three-Dimensional Beam-Propagation Method

Jun SHIBAYAMA; Koichi SADANO; Junji YAMAUCHI; Hisamatsu NAKANO

Design of a Wavelength Demultiplexer Based on a Bent Waveguide Coupler Using the Three-Dimensional Beam-Propagation Method

Jun SHIBAYAMA, Koichi SADANO, Junji YAMAUCHI, Hisamatsu NAKANO

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A bent-waveguide-based multimode interference (MMI) demultiplexer is designed for the operation at 0.85- and 1.55-µm wavelengths using the three-dimensional semi-vectorial beam-propagation method. First, it is shown that the use of a straight MMI waveguide results in a long coupler length of more than 1000µm for wavelength demulitplexing. To reduce the coupler length, we next introduce a bent MMI waveguide. Bending with a radius of 1500µm leads to a coupler length of less than 200µm. After designing two output waveguides connected to the MMI section, we finally choose a coupler length to be 175µm for efficient demultiplexing properties. Consequently, an output power of more than 90% can be obtained, leading to a low insertion loss of 0.34dB at both 0.85- and 1.55-µm wavelengths. The demultiplexer achieves small polarization dependence, i.e., less than 2dB difference in contrast and 0.02dB difference in insertion loss.

Publication: IEICE TRANSACTIONS on Electronics Vol.E86-C No.5 pp.765-770

Publication Date: 2003/05/01

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Type of Manuscript: Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)

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Jun SHIBAYAMA, Koichi SADANO, Junji YAMAUCHI, Hisamatsu NAKANO, "Design of a Wavelength Demultiplexer Based on a Bent Waveguide Coupler Using the Three-Dimensional Beam-Propagation Method" in IEICE TRANSACTIONS on Electronics, vol. E86-C, no. 5, pp. 765-770, May 2003, doi: .
Abstract: A bent-waveguide-based multimode interference (MMI) demultiplexer is designed for the operation at 0.85- and 1.55-µm wavelengths using the three-dimensional semi-vectorial beam-propagation method. First, it is shown that the use of a straight MMI waveguide results in a long coupler length of more than 1000µm for wavelength demulitplexing. To reduce the coupler length, we next introduce a bent MMI waveguide. Bending with a radius of 1500µm leads to a coupler length of less than 200µm. After designing two output waveguides connected to the MMI section, we finally choose a coupler length to be 175µm for efficient demultiplexing properties. Consequently, an output power of more than 90% can be obtained, leading to a low insertion loss of 0.34dB at both 0.85- and 1.55-µm wavelengths. The demultiplexer achieves small polarization dependence, i.e., less than 2dB difference in contrast and 0.02dB difference in insertion loss.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/e86-c_5_765/_p

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@ARTICLE{e86-c_5_765,
author={Jun SHIBAYAMA, Koichi SADANO, Junji YAMAUCHI, Hisamatsu NAKANO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Design of a Wavelength Demultiplexer Based on a Bent Waveguide Coupler Using the Three-Dimensional Beam-Propagation Method},
year={2003},
volume={E86-C},
number={5},
pages={765-770},
abstract={A bent-waveguide-based multimode interference (MMI) demultiplexer is designed for the operation at 0.85- and 1.55-µm wavelengths using the three-dimensional semi-vectorial beam-propagation method. First, it is shown that the use of a straight MMI waveguide results in a long coupler length of more than 1000µm for wavelength demulitplexing. To reduce the coupler length, we next introduce a bent MMI waveguide. Bending with a radius of 1500µm leads to a coupler length of less than 200µm. After designing two output waveguides connected to the MMI section, we finally choose a coupler length to be 175µm for efficient demultiplexing properties. Consequently, an output power of more than 90% can be obtained, leading to a low insertion loss of 0.34dB at both 0.85- and 1.55-µm wavelengths. The demultiplexer achieves small polarization dependence, i.e., less than 2dB difference in contrast and 0.02dB difference in insertion loss.},
keywords={},
doi={},
ISSN={},
month={May},}

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TY - JOUR
TI - Design of a Wavelength Demultiplexer Based on a Bent Waveguide Coupler Using the Three-Dimensional Beam-Propagation Method
T2 - IEICE TRANSACTIONS on Electronics
SP - 765
EP - 770
AU - Jun SHIBAYAMA
AU - Koichi SADANO
AU - Junji YAMAUCHI
AU - Hisamatsu NAKANO
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E86-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 2003
AB - A bent-waveguide-based multimode interference (MMI) demultiplexer is designed for the operation at 0.85- and 1.55-µm wavelengths using the three-dimensional semi-vectorial beam-propagation method. First, it is shown that the use of a straight MMI waveguide results in a long coupler length of more than 1000µm for wavelength demulitplexing. To reduce the coupler length, we next introduce a bent MMI waveguide. Bending with a radius of 1500µm leads to a coupler length of less than 200µm. After designing two output waveguides connected to the MMI section, we finally choose a coupler length to be 175µm for efficient demultiplexing properties. Consequently, an output power of more than 90% can be obtained, leading to a low insertion loss of 0.34dB at both 0.85- and 1.55-µm wavelengths. The demultiplexer achieves small polarization dependence, i.e., less than 2dB difference in contrast and 0.02dB difference in insertion loss.
ER -