Title :
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
fDate :
7/1/1994 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
