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학술지 Enhancing Alignment Tolerance of Silicon Waveguide by using a Wide Grating Coupler
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저자
이종무, 김갑중, 김경옥
발행일
200808
출처
Optics Express, v.16 no.17, pp.13024-13031
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.16.013024
협약과제
07MB1500, 실리콘 기반 초고속 광인터커넥션 IC, 김경옥
초록
We fabricate a 20 μm wide grating coupler for a single-mode thermally-expanded-core (TEC) fiber, in order to enhance positional tolerance in alignment. The minimal coupling loss is measured at 5 dB per facet and the optical 3 dB bandwidth is measured at 40 nm. The 3 dB alignment tolerance is measured at 짹7.5 μm in horizontal direction and +290 μm in vertical direction. The 1 dB alignment tolerance is measured at 짹 4.2 μm in horizontal direction and +125 μm in vertical direction. The alignment tolerance is enhanced twice in horizontal direction and four times in vertical direction, compared with the coupling of a standard single-mode fiber to a standard 10 μm wide grating coupler which is also fabricated in this experiment. © 2008 Optical Society of America.
KSP 제안 키워드
3-dB bandwidth, 40 nm, Coupling loss, Silicon waveguide, Single-mode fiber(SMF), Standard single-mode fiber, alignment tolerance, grating coupler, positional tolerance