DocumentCode :
1481539
Title :
Integrated SU-8 Prisms and Microgratings for Polarization-Selective Fiber-to-Silicon Waveguide Coupling
Author :
Huang, Sheng-Wen ; Ku, Kai-Ning ; Lee, Ming-Chang Mark ; Nguyen, Minh-Hang ; Tseng, Fan-Gang
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Volume :
24
Issue :
12
fYear :
2012
fDate :
6/15/2012 12:00:00 AM
Firstpage :
1054
Lastpage :
1056
Abstract :
A polarization-selective fiber-to-silicon waveguide coupler made by an SU-8 prism as well as a micrograting is demonstrated. The size of the SU-8 prism well matches the core dimension of a single-mode fiber to increase the coupling efficiency, and the micrograting provides the selectivity of polarization mode coupling. Only the TE wave is able to be coupled to the silicon waveguide. The measured coupling loss of the SU-8 prism and the micrograting is 4.5 dB. The polarization extinction ratio is 20 dB. The fiber misalignment tolerances are 2 and 3 μ m for the x- (lateral) and y- (vertical) directions, respectively, according to a transmission window of 3-dB drop.
Keywords :
diffraction gratings; elemental semiconductors; optical fibre couplers; optical fibre polarisation; optical prisms; optical waveguides; silicon; SU-8 prisms; Si; microgratings; polarization-selective fiber-to-silicon waveguide coupler; single-mode fiber; Couplings; Gratings; Optical fiber couplers; Optical fiber sensors; Silicon; Optical interconnect; polarization-selective coupler; silicon photonics;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2012.2192919
Filename :
6177224
Link To Document :
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