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학술지 Compactly Packaged Monolithic Four-Wavelength VCSEL Array with 100-GHz Wavelength Spacing for Future-Proof Mobile Fronthaul Transport
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저자
이은구, 문실구, 이정찬, 이상수, 이종현
발행일
201501
출처
Optics Express, v.23 no.1, pp.284-291
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.23.000284
협약과제
14MI9300, (통합)대용량 WDM 액세스망핵심 및 선행기술개발, 이상수
초록
We report a cost-effective transmitter optical sub-assembly using a monolithic four-wavelength vertical-cavity surface-emitting laser (VCSEL) array with 100-GHz wavelength spacing for future-proof mobile fronthaul transport using the data rate of common public radio interface option 6. The wavelength spacing is achieved using selectively etched cavity control layers and fine current adjustment. The differences in operating current and output power for maintaining the wavelength spacing of four VCSELs are <1.4 mA and <1 dB, respectively. Stable operation performance without mode hopping is observed, and error-free transmission under direct modulation is demonstrated over a 20-km single-mode fiber without any dispersion-compensation techniques.
KSP 제안 키워드
Common Public Radio Interface, Direct modulation, Error-free transmission, Mobile fronthaul, Mode hopping, Operation performance, Output power, Single-mode fiber(SMF), Stable operation, Transmitter Optical Sub-Assembly, VCSEL array