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	Improved optical heterodyne methods for measuring. frequency responses of photodetectors
	Zhu, NH; Wen, JM; San, HS; Huang, HP; Zhao, LJ; Wang, W
刊名	Ieee journal of quantum electronics
	2006-03-01
卷号	42期号:3-4页码:241-248
关键词	Frequency response Optical heterodyne method Photodetector Tunable laser
ISSN号	0018-9197
DOI	10.1109/jqe.2006.869804
通讯作者	Zhu, nh(nhzhu@semi.ac.cn)
英文摘要	An improved optical self-heterodyne method utilizing a distributed bragg reflector (dbr) tunable laser and an optical fiber ring interferometer is presented in this paper. the interference efficiency can be increased by 7 db compared with the scheme using the conventional mach-zehnder interferometer. the unsteady process that the beating frequency experiences in each tuning period is investigated. according to the measurement results, the wavelength and optical power of the tunable laser will be steady when the square-wave frequency is lower than 300 khz. it has been shown that when a square-wave voltage is applied to the phase section of the tunable laser, the laser linewidths vary in a wide range, and are much larger than that under dc voltage tuning. the errors caused by the variations in the linewidth of the beat signal and optical power can be eliminated using the proposed calibration procedures, and the measurement accuracy can, therefore, be significantly improved. experiments show that the frequency responses obtained using our method agree well with the data provided by the manufacturer, and the improved optical self-heterodyne method is as accurate as the intensity noise technique.
WOS关键词	SELF-HOMODYNE TECHNIQUE ; BANDWIDTH MEASUREMENTS ; LINEWIDTH ; RECEIVER ; NOISE ; FIBER ; PHOTODIODE ; RESOLUTION ; LINESHAPE ; SYSTEM
WOS研究方向	Engineering ; Optics ; Physics
WOS类目	Engineering, Electrical & Electronic ; Optics ; Physics, Applied
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000236674000003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2426646
专题	半导体研究所
通讯作者	Zhu, NH
作者单位	Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhu, NH,Wen, JM,San, HS,et al. Improved optical heterodyne methods for measuring. frequency responses of photodetectors[J]. Ieee journal of quantum electronics,2006,42(3-4):241-248.
APA	Zhu, NH,Wen, JM,San, HS,Huang, HP,Zhao, LJ,&Wang, W.(2006).Improved optical heterodyne methods for measuring. frequency responses of photodetectors.Ieee journal of quantum electronics,42(3-4),241-248.
MLA	Zhu, NH,et al."Improved optical heterodyne methods for measuring. frequency responses of photodetectors".Ieee journal of quantum electronics 42.3-4(2006):241-248.

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