상세정보
학술지
Nonuniform Output Characteristics of Laser Diode with Wet-etched Spot-size Converter
- 발행일
- 200804
- 출처
- Optics Express, v.16 no.8, pp.5790-5796
- ISSN
- 1094-4087
- 출판사
- Optical Society of America(OSA)
- 협약과제
- 07MB2400, 휴대 단말기용 나노 플렉스블 광전배선 모듈, 주정진
- 초록
- We study the output characteristics of spot-size converter (SSC) integrated buried heterostructure (BH) laser diode (LD) by forming SSC with wet etching process. SSC-LD shows large chip-to-chip variation in threshold current(I th) and slope efficiency (ηaslope) compared to LD without SSC. Ith and ηslope are closely related with each other so that the front facet aslope increases while the rear facet ηslope decreases with Ith. Far-field angle is also found to be proportional to the front facet ηslope. The trends observed are explained clearly by a unidirectional loss occurring when photons travel from the front to rear facet. © 2008 Optical Society of America.
- KSP 제안 키워드
- Buried heterostructure (BH) laser, Far-field, Field angle, Large chip, Laser diode(LD), Slope efficiency, Spot size converter(SSC), Threshold current, Wet etching process, chip-to-chip, output characteristics