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학술지 A Multi-Channel Etched-Mesa PBH DFB Laser Array Using an SAG Technique
Cited 7 time in scopus Download 1 time Share share facebook twitter linkedin kakaostory
저자
오수환, 권오기, 김기수, 한영탁, 이철욱, 임영안, 신장욱, 남은수
발행일
201512
출처
IEEE Photonics Technology Letters, v.27 no.24, pp.2567-2570
ISSN
1041-1135
출판사
IEEE
DOI
https://dx.doi.org/10.1109/LPT.2015.2478147
협약과제
14MB1200, 스마트 데이터센터용 차세대 광-전 모듈 기술, 남은수
초록
We present a multi-channel {\\lambda}/4-shifted distributed feedback laser diode array (DFB-LDA) for the low-cost application of wavelength division multiplexing-based datacenter networks. The gain spectrum and lasing wavelength of each channel are controlled by utilizing selective area growth and E-beam lithography techniques, respectively. To reduce the power consumption and improve the channel uniformity of the proposed array, a planar-buried hetero-structure (PBH) is introduced and the region containing the active region and the current blocking structures are etched in a mesa form (i.e., an etched mesa PBH). From this study, it was found that an 8-channel 300-μm-long anti-reflection (AR) {\\lambda}/4-shifted DFB-LDA has a threshold current of 10 mA, 짹1.5 mA, and a side mode suppression ratio of over 50 dB for all channels. A transmission test for this LDA showed a clear eye opening with a dynamic ratio of over 4.5 dB at 10 Gb/s, and a power penalty of less than 2 dB after a 2-km transmission.
키워드
buried heterostructure, Distributed feedback laser, laser diode array, polyimide island, selective area growth
KSP 제안 키워드
Anti-Reflection, DFB laser array, Data Center Networks, Distributed feedback laser diode, Distributed feedback lasers(DFBs), E-beam Lithography, Gain spectrum, Laser diode(LD), Laser diode array, Low-cost, Power Consumption