A multimode-interferenced electrooptic TE/TM mode splitter

Author

Gyongbo Kim ; Byunghan Kang ; Sangsun Lee ; Hosung Chang ; Myungryul Choi ; Seok Lee ; Deokha Woo ; Sunho Kim

Author_Institution

Div. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea

Volume

2

fYear

1999

fDate

Aug. 30 1999-Sept. 3 1999

Firstpage

565

Abstract

TE/TM mode splitting is an important integrated-optic function for fiber communication system and fiber sensors, where orthogonal polarization states of the signals are particularly emphasized. Guided-wave TE/TM mode splitting has been demonstrated in LiNbO/sub 3/, III-V compound semiconductors and polymers. They used an asymmetric Y-junction with different preferences of polarizations, a double mode waveguide with different coupling lengths for TE and TM modes, and the photo-bleaching induced birefringence, respectively. We present a novel TE/TM mode splitter utilizing the multimode interference and the linear electrooptic (LEG) effect, It employs a new operating principle, and shows several important characteristics: high extinction ratio, low excess loss, easy fabrication and large fabrication tolerance, and integratibility with other photonic devices.

Keywords

electro-optical devices; integrated optics; light interference; light polarisation; optical beam splitters; optical couplers; optical fabrication; optical losses; III-V compound semiconductors; LiNbO/sub 3/; TE modes; TE/TM mode splitter; TE/TM mode splitting; TM modes; asymmetric Y-junction; coupling lengths; double mode waveguide; extinction ratio; fabrication; fabrication tolerance; fiber communication system; fiber sensors; guided-wave TE/TM mode splitting; integrated-optic function; integratibility; linear electrooptic effect; low excess loss; multimode interference; multimode-interferenced electrooptic TE/TM mode splitter; operating principle; orthogonal polarization states; photo-bleaching induced birefringence; photonic devices; polarizations; polymers; Birefringence; Fabrication; III-V semiconductor materials; Optical fiber communication; Optical fiber polarization; Optical fiber sensors; Polymers; Semiconductor waveguides; Sensor systems; Tellurium;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on

Conference_Location

Seoul, South Korea

Print_ISBN

0-7803-5661-6

Type

conf

DOI

10.1109/CLEOPR.1999.811572

Filename

811572