IEICE TRANSACTIONS on Electronics
All-Optical Switching Property of an MQW-Sandwich Nonlinear Directional Coupler with Nonlinear Losses
Summary :
We analyze all-optical switching property of a nonlinear directional coupler (NLDC) having an MQW coupling layer with both nonlinear and linear losses, and examine the effect of nonlinear losses. We use the Galerkin finite element method accompanied by a prodictor-corrector algorithm. The propagation loss along the strongly-coupled NLDC decreases with increasing nonlinear absorption coefficient due to saturation in absorption. A propagation loss of 8.18 dB or 2.38 dB in the bar state of the cross state is much smaller than the bulk loss of MQW structure which exceeds 50 dB. The nonlinear losses lengthen the coupling length and bring it close to that of a lossfree NLDC, while the linear losses shorten. It is found that the property of the cross state is greatly improved by counting the nonlinear losses: The cross-state output power and the output power ratio of two waveguides increase, and the cross state input power, that is, the switching power decreases.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E78-C No.3 pp.299-303
- Publication Date
- 1995/03/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Opto-Electronics
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Naomichi OKAMOTO, Xue Jun MENG, Okihiro SUGIHARA, "All-Optical Switching Property of an MQW-Sandwich Nonlinear Directional Coupler with Nonlinear Losses" in IEICE TRANSACTIONS on Electronics,
vol. E78-C, no. 3, pp. 299-303, March 1995, doi: .
Abstract: We analyze all-optical switching property of a nonlinear directional coupler (NLDC) having an MQW coupling layer with both nonlinear and linear losses, and examine the effect of nonlinear losses. We use the Galerkin finite element method accompanied by a prodictor-corrector algorithm. The propagation loss along the strongly-coupled NLDC decreases with increasing nonlinear absorption coefficient due to saturation in absorption. A propagation loss of 8.18 dB or 2.38 dB in the bar state of the cross state is much smaller than the bulk loss of MQW structure which exceeds 50 dB. The nonlinear losses lengthen the coupling length and bring it close to that of a lossfree NLDC, while the linear losses shorten. It is found that the property of the cross state is greatly improved by counting the nonlinear losses: The cross-state output power and the output power ratio of two waveguides increase, and the cross state input power, that is, the switching power decreases.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e78-c_3_299/_p
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@ARTICLE{e78-c_3_299,
author={Naomichi OKAMOTO, Xue Jun MENG, Okihiro SUGIHARA, },
journal={IEICE TRANSACTIONS on Electronics},
title={All-Optical Switching Property of an MQW-Sandwich Nonlinear Directional Coupler with Nonlinear Losses},
year={1995},
volume={E78-C},
number={3},
pages={299-303},
abstract={We analyze all-optical switching property of a nonlinear directional coupler (NLDC) having an MQW coupling layer with both nonlinear and linear losses, and examine the effect of nonlinear losses. We use the Galerkin finite element method accompanied by a prodictor-corrector algorithm. The propagation loss along the strongly-coupled NLDC decreases with increasing nonlinear absorption coefficient due to saturation in absorption. A propagation loss of 8.18 dB or 2.38 dB in the bar state of the cross state is much smaller than the bulk loss of MQW structure which exceeds 50 dB. The nonlinear losses lengthen the coupling length and bring it close to that of a lossfree NLDC, while the linear losses shorten. It is found that the property of the cross state is greatly improved by counting the nonlinear losses: The cross-state output power and the output power ratio of two waveguides increase, and the cross state input power, that is, the switching power decreases.},
keywords={},
doi={},
ISSN={},
month={March},}
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TY - JOUR
TI - All-Optical Switching Property of an MQW-Sandwich Nonlinear Directional Coupler with Nonlinear Losses
T2 - IEICE TRANSACTIONS on Electronics
SP - 299
EP - 303
AU - Naomichi OKAMOTO
AU - Xue Jun MENG
AU - Okihiro SUGIHARA
PY - 1995
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E78-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 1995
AB - We analyze all-optical switching property of a nonlinear directional coupler (NLDC) having an MQW coupling layer with both nonlinear and linear losses, and examine the effect of nonlinear losses. We use the Galerkin finite element method accompanied by a prodictor-corrector algorithm. The propagation loss along the strongly-coupled NLDC decreases with increasing nonlinear absorption coefficient due to saturation in absorption. A propagation loss of 8.18 dB or 2.38 dB in the bar state of the cross state is much smaller than the bulk loss of MQW structure which exceeds 50 dB. The nonlinear losses lengthen the coupling length and bring it close to that of a lossfree NLDC, while the linear losses shorten. It is found that the property of the cross state is greatly improved by counting the nonlinear losses: The cross-state output power and the output power ratio of two waveguides increase, and the cross state input power, that is, the switching power decreases.
ER -
English
