Tunable Fabry-Perot filter and grating hybrid modulator to improve dispersive spectrometer resolution

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	Tunable Fabry-Perot filter and grating hybrid modulator to improve dispersive spectrometer resolution
	Fang, Liang; Li, Guojun; Yang, Huan; Zhou, Chongxi
刊名	APPLIED PHYSICS B-LASERS AND OPTICS
	2016-05-01
卷号	122 期号:5
ISSN号	0946-2171
英文摘要	We describe a tunable Fabry-Perot filter and grating hybrid modulator to achieve a higher spectral resolution compared with that produced by a single grating with the same period. In the hybrid modulator, a tunable Fabry-Perot filter is designed with a long cavity to accommodate a multi-order narrowband pre-filter. A grating is then utilized to separate these multi-orders spatially. Scanning the air gap of the tunable Fabry-Perot filter within 1/2 wavelength, the entire spectrogram can be achieved by compositing each group of transmitted multi-orders. Light passes first through the Fabry-Perot cavity and then into the grating. Thus, all of the light is incident on the Fabry-Perot cavity at a given angle, which can reduce the requirement for incident beam alignment and simplify the operation of the hybrid modulator. The structural matching conditions of the tunable Fabry-Perot filter and grating were presented based on the operating law of the hybrid modulator. In terms of the Rayleigh criterion, the practical spectral resolution of the hybrid modulator can be increased by at least twice that of the single grating. Experiments with a neon lamp revealed that the spectral resolution of the hybrid modulator was nearly double that of a single grating.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Optics ; Physics, Applied
研究领域[WOS]	Optics ; Physics
关键词[WOS]	MINIATURE SPECTROMETER ; MICROSPECTROMETERS ; SPECTROSCOPY ; SENSORS
收录类别	SCI
语种	英语
WOS记录号	WOS:000378778600040
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/3912]
专题	光电技术研究所_光电技术研究所被WoS收录文章
作者单位	Chinese Acad Sci, State Key Lab Opt Technol Nanofabricat & Microeng, Inst Opt & Elect, POB 350, Chengdu 610209, Peoples R China
推荐引用方式 GB/T 7714	Fang, Liang,Li, Guojun,Yang, Huan,et al. Tunable Fabry-Perot filter and grating hybrid modulator to improve dispersive spectrometer resolution[J]. APPLIED PHYSICS B-LASERS AND OPTICS,2016,122(5).
APA	Fang, Liang,Li, Guojun,Yang, Huan,&Zhou, Chongxi.(2016).Tunable Fabry-Perot filter and grating hybrid modulator to improve dispersive spectrometer resolution.APPLIED PHYSICS B-LASERS AND OPTICS,122(5).
MLA	Fang, Liang,et al."Tunable Fabry-Perot filter and grating hybrid modulator to improve dispersive spectrometer resolution".APPLIED PHYSICS B-LASERS AND OPTICS 122.5(2016).