共 24 条
Mode-evolution-based silicon-on-insulator 3 dB coupler using fast quasiadiabatic dynamics
被引:35
作者:

Hung, Yung-, Jr.
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Natl Sun Yat Sen Univ, Dept Photon, 70 Lien Hai Rd, Kaohsiung 804, Taiwan Natl Sun Yat Sen Univ, Dept Photon, 70 Lien Hai Rd, Kaohsiung 804, Taiwan

Li, Zhong-Ying
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Natl Cheng Kung Univ, Dept Photon, 1 Univ Rd, Tainan 701, Taiwan Natl Sun Yat Sen Univ, Dept Photon, 70 Lien Hai Rd, Kaohsiung 804, Taiwan

Chung, Hung-Ching
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Natl Cheng Kung Univ, Dept Photon, 1 Univ Rd, Tainan 701, Taiwan Natl Sun Yat Sen Univ, Dept Photon, 70 Lien Hai Rd, Kaohsiung 804, Taiwan

Liang, Fu-Chieh
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Natl Cheng Kung Univ, Dept Photon, 1 Univ Rd, Tainan 701, Taiwan Natl Sun Yat Sen Univ, Dept Photon, 70 Lien Hai Rd, Kaohsiung 804, Taiwan

Jung, Ming-Yang
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Natl Sun Yat Sen Univ, Dept Photon, 70 Lien Hai Rd, Kaohsiung 804, Taiwan Natl Sun Yat Sen Univ, Dept Photon, 70 Lien Hai Rd, Kaohsiung 804, Taiwan

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[1] Natl Sun Yat Sen Univ, Dept Photon, 70 Lien Hai Rd, Kaohsiung 804, Taiwan
[2] Natl Cheng Kung Univ, Dept Photon, 1 Univ Rd, Tainan 701, Taiwan
关键词:
DIRECTIONAL COUPLER;
TRANSFORMER;
BANDWIDTH;
SPLITTER;
SWITCH;
D O I:
10.1364/OL.44.000815
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
We report a 2 x 2 broadband and fabrication tolerant mode-evolution-based 3 dB coupler based on silicon-oninsulator rib waveguides. The operating principle of the coupler is based on the adiabatic evolution of local eigenmodes. The key element of the device is an adiabatically tapered mode evolution region, which converts two dissimilar waveguides into two identical waveguides. Contrary to conventional designs using a linear taper function where the device adiabaticity is uneven during evolution, we use the fast quasiadiabatic approach to homogenize the adiabaticity of the device, leading to a shortcut to adiabaticity. Devices with an optimized taper region of 26.3 mu m are designed and fabricated in a complementary metal-oxide-semiconductor compatible process with 193 nm deep ultraviolet lithography. The measured devices exhibit a broadband 3 dB +/- 0.5 dB splitting within a bandwidth of 100 nm, uniformly across a 200-mm wafer, showing good tolerance against fabrication variations. (C) 2019 Optical Society of America
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页码:815 / 818
页数:4
相关论文
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