An application of a silica-on-terraced-silicon platform to hybrid Mach-Zehnder interferometric circuits consisting of silica-waveguides and LiNbO/sub 3/ phase-shifters

Author

Yamada, Yasufumi ; Sugita, Akio ; Moriwaki, Kazuyuki ; Ogawa, Ikuo ; Hashimoto, Toshikazu

Author_Institution

NTT Opto-Electron. Labs., Ibaraki, Japan

Volume

6

Issue

7

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

822

Lastpage

824

Abstract

By using a silica-on-terraced-silicon platform (STS-platform) for optical hybrid integration, we fabricated a hybrid Mach-Zehnder interferometric circuit consisting of silica-waveguide directional couplers and a LiNbO/sub 3/ phase-shifter array. The circuit functioned as an optical switch with an insertion loss of 6.0 dB including input and output fiber coupling loss and an extinction ratio of better than 20 dB. The STS-platform was thus confirmed to incorporate both a high-performance planar lightwave circuit and a silicon optical bench.<>

Keywords

directional couplers; integrated optics; light interferometers; lithium compounds; optical couplers; optical losses; optical switches; optical waveguides; phase shifters; silicon compounds; 6.0 dB; LiNbO/sub 3/; LiNbO/sub 3/ phase-shifter array; Si; Si optical bench; SiO/sub 2/; SiO/sub 2/-on-terraced-Si platform; SiO/sub 2/-waveguide directional couplers; extinction ratio; high-performance planar lightwave circuit; hybrid Mach-Zehnder interferometric circuits; input fiber coupling loss; insertion loss; optical hybrid integration; optical switch; output fiber coupling loss; Circuits; Directional couplers; Insertion loss; Integrated optics; Optical arrays; Optical fiber losses; Optical interferometry; Optical switches; Phase shifting interferometry; Phased arrays;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.311466

Filename

311466