Title :
Low-crosstalk waveguide crossing based on 1×1 MMI structure of silicon-wire waveguide
Author :
Sang-Hun Kim ; Guangwei Cong ; Kawashima, Hitoshi ; Hasama, Toshifumi ; Ishikawa, Hiroshi
Author_Institution :
Network Photonic Res. Center, Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan
fDate :
June 30 2013-July 4 2013
Abstract :
Waveguide crossing based on a tilted multimode-interference (MMI) structure in high-index-contrast silicon wire is reported. For low crosstalk and low loss, crossing angle of MMIs is optimized. The measured crosstalk with the optimal crossing angle of 110° is -44 dB at wavelength of 1550 nm. This corresponds to improvement by more than 14 dB from previously reported crosstalk with 90°-crossings of MMIs.
Keywords :
elemental semiconductors; optical crosstalk; optical losses; optical waveguides; silicon; MMI structure; Si; high-index-contrast silicon-wire waveguide; low-crosstalk waveguide; optical loss; tilted multimode-interference structure; wavelength 1550 nm; Crosstalk; Optical losses; Optical waveguides; Photonics; Propagation losses; Silicon; Waveguide lasers;
Conference_Titel :
Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2013 Conference on
Conference_Location :
Kyoto
DOI :
10.1109/CLEOPR.2013.6600447
