Preparation of Substituted Y_3Fe_5O_<12> Single-Mode Buried Waveguides on a [1 0 0] Oriented Gd_3Ga_5O_<12> Substrate
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概要
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A [1 1 0] oriented Gd_3Ga_5O_<12> (GGG) substrate is used to prepare a [0 1^^- 1] direction buried channel waveguides of flux grown substituted Y_3Fe_5O_<12> (YIG) films. Substituted YIG films are employed as a core as well as claddings. Ion-beam etching is used to form core ridges. Smooth side walls of core ridges are obtained after the soaking in hot phosphoric acid due to the good symmetry of garnet crystal. A well confined circular single-mode near-field intensity pattern is observed at λ=1.55 μm for waveguides less than 7 μm wide. Although the deviation is large, one of the waveguides exhibits a low propagation loss of less than 1 dB/cm which is comparable to the propagation loss of the film.
- 社団法人応用物理学会の論文
- 1993-04-01
著者
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Shibukawa A
Ntt Opto-electronics Laboratories
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Tate A
Ntt Photonics Laboratories Ntt Corporation
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KATOH Yujiro
NTT Opto-Electronics Laboratories
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Sugimoto N
National Institute For Environment Studies
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Katoh Y
Ntt Opto-electronics Laboratories
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TATE Akiyuki
NTT Opto-electronics Laboratories
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SUGIMOTO Naoto
NTT Opto-Electronics Laboratories
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SHIBUKAWA Atsushi
NTT Opto-eletctronics Laboratories
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Shibukawa Atsushi
Ntt Opto-electronics Laboratories
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