IEICE TRANSACTIONS on Electronics
Properties of a Strongly-Coupled Nonlinear Directional Coupler with a Lossy MQW Coupling Layer
Summary :
Properties of a strongly-coupled nonlinear directional coupler (NLDC) with a lossy MQW coupling layer is analyzed using the Galerkin finite element method accompanied by a predictor-corrector algorithm. It is shown that the propagation attenuation along the NLDC is considerably smaller than that in the bulk MQW and tends to reduce with the input power. By the presence of losses, the powers guided in two waveguides do not become a maximum and a minimum at the same propagation length, unlike the lossless coupler. The losses make the nonlinear effect weak due to the decrease in guided power, and hence the coupling length decreases and the switching power increases. The extinction ratio of the switching becomes the largest value not in the cases of nonloss and high losses but in the case of moderately high losses, although the switching power is somewhat larger than that of the lossless case.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E76-C No.8 pp.1339-1344
- Publication Date
- 1993/08/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Opto-Electronics
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Xue Jun MENG, Naomichi OKAMOTO, Okihiro SUGIHARA, "Properties of a Strongly-Coupled Nonlinear Directional Coupler with a Lossy MQW Coupling Layer" in IEICE TRANSACTIONS on Electronics,
vol. E76-C, no. 8, pp. 1339-1344, August 1993, doi: .
Abstract: Properties of a strongly-coupled nonlinear directional coupler (NLDC) with a lossy MQW coupling layer is analyzed using the Galerkin finite element method accompanied by a predictor-corrector algorithm. It is shown that the propagation attenuation along the NLDC is considerably smaller than that in the bulk MQW and tends to reduce with the input power. By the presence of losses, the powers guided in two waveguides do not become a maximum and a minimum at the same propagation length, unlike the lossless coupler. The losses make the nonlinear effect weak due to the decrease in guided power, and hence the coupling length decreases and the switching power increases. The extinction ratio of the switching becomes the largest value not in the cases of nonloss and high losses but in the case of moderately high losses, although the switching power is somewhat larger than that of the lossless case.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e76-c_8_1339/_p
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@ARTICLE{e76-c_8_1339,
author={Xue Jun MENG, Naomichi OKAMOTO, Okihiro SUGIHARA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Properties of a Strongly-Coupled Nonlinear Directional Coupler with a Lossy MQW Coupling Layer},
year={1993},
volume={E76-C},
number={8},
pages={1339-1344},
abstract={Properties of a strongly-coupled nonlinear directional coupler (NLDC) with a lossy MQW coupling layer is analyzed using the Galerkin finite element method accompanied by a predictor-corrector algorithm. It is shown that the propagation attenuation along the NLDC is considerably smaller than that in the bulk MQW and tends to reduce with the input power. By the presence of losses, the powers guided in two waveguides do not become a maximum and a minimum at the same propagation length, unlike the lossless coupler. The losses make the nonlinear effect weak due to the decrease in guided power, and hence the coupling length decreases and the switching power increases. The extinction ratio of the switching becomes the largest value not in the cases of nonloss and high losses but in the case of moderately high losses, although the switching power is somewhat larger than that of the lossless case.},
keywords={},
doi={},
ISSN={},
month={August},}
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TY - JOUR
TI - Properties of a Strongly-Coupled Nonlinear Directional Coupler with a Lossy MQW Coupling Layer
T2 - IEICE TRANSACTIONS on Electronics
SP - 1339
EP - 1344
AU - Xue Jun MENG
AU - Naomichi OKAMOTO
AU - Okihiro SUGIHARA
PY - 1993
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E76-C
IS - 8
JA - IEICE TRANSACTIONS on Electronics
Y1 - August 1993
AB - Properties of a strongly-coupled nonlinear directional coupler (NLDC) with a lossy MQW coupling layer is analyzed using the Galerkin finite element method accompanied by a predictor-corrector algorithm. It is shown that the propagation attenuation along the NLDC is considerably smaller than that in the bulk MQW and tends to reduce with the input power. By the presence of losses, the powers guided in two waveguides do not become a maximum and a minimum at the same propagation length, unlike the lossless coupler. The losses make the nonlinear effect weak due to the decrease in guided power, and hence the coupling length decreases and the switching power increases. The extinction ratio of the switching becomes the largest value not in the cases of nonloss and high losses but in the case of moderately high losses, although the switching power is somewhat larger than that of the lossless case.
ER -
English
