System and method for measuring physical stimuli using vertical cavity surface emitting lasers with integrated tuning means

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	System and method for measuring physical stimuli using vertical cavity surface emitting lasers with integrated tuning means
其他题名	System and method for measuring physical stimuli using vertical cavity surface emitting lasers with integrated tuning means
	KOCHERGIN, VLADIMIR; SWINEHART, PHILIP
	2004-12-28
专利权人	KYTON, LLC
公开日期	2004-12-28
授权国家	美国
专利类型	授权发明
摘要	An optical sensor diagnostic system utilizes a tunable Vertical Cavity Surface Emitting Laser (VCSEL) that incorporates an integrated MEMS tuning mechanism provides variable wavelength light into an optical fiber with improved wavelength scanning speed and greater simplicity of construction. Sensors, such as Bragg gratings, are disposed along the fiber in the light path. Each sensor reflects or transmits light exhibiting a characteristic amplitude and/or phase feature with respect to wavelength, the wavelength position of which is affected by an environmental stimulus imposed thereon. The light reflected or transmitted through each sensor is mixed with light passed through an optical reference path and then converted to an electrical signal by a simple detector and monitored by ciruitry that applies signal processing to the detected power spectral distribution, by this means providing output signals indicative of the environmental stimulus on each sensor.
其他摘要	光学传感器诊断系统利用可调谐垂直腔面发射激光器（VCSEL），其结合了集成的MEMS调谐机构，将可变波长的光提供到光纤中，具有改进的波长扫描速度和更简单的结构。诸如布拉格光栅的传感器沿光纤布置在光路中。每个传感器反射或透射表现出相对于波长的特征幅度和/或相位特征的光，其波长位置受到施加在其上的环境刺激的影响。通过每个传感器反射或透射的光与通过光学参考路径的光混合，然后通过简单的探测器转换为电信号，并通过对检测到的功率谱分布应用信号处理的电路进行监测，通过这种方式提供输出信号指示每个传感器上的环境刺激。
主权项	An optical sensor diagnostic system, comprising: a tunable VCSEL incorporating an integrated MEMS wavelength tuner that provides wavelength-tunable light in response to a tuning control signal; an optical waveguide optically coupled to said VCSEL, said tunable light being launched into said optical waveguide; at least one optical sensor disposed in the path of said tunable light, said tunable VCSEL individually illuminating said sensor, said sensor providing a transmitted light having altered amplitude and/or phase at least over some wavelengths within the transmitted wavelength range, said spectral distribution of said altered amplitude and/or phase being responsive to an environmental stimulus; an optical reference path to be optically compared with the sensing path; an optical detector, disposed in the path of said transmitted light, for detecting said transmitted light from said sensor and the optical reference path and for providing an electrical detection signal indicative of the power of said transmitted light throughout the appropriate wavelength range; a controller coupled to said tunable VCSEL, said controller providing a variable tuning control signal to said tunable VCSEL indicative of the desired wavelength of said tunable light; a capacitive or optical reference that determines the wavelength of the light emitted by said tunable VCSEL as a function of time and providing feedback; and a signal processor responsive to said electrical detection signal, for detecting a wavelength defined on the characteristic transmission amplitude feature in order to quantitatively detect the effect on said sensor due to said environmental stimulus, for detecting changes in said wavelength at the characteristic transmission amplitude feature caused by changes in said environmental stimulus, and for providing a signal indicative of said stimulus or change therein for said sensor.
申请日期	2003-12-22
专利号	US6836578
专利状态	授权
申请号	US10/740602
公开（公告）号	US6836578
IPC 分类号	G01B9/02 \| G01N21/45 \| G02B26/00 \| G01N21/41 \| G02B6/42 \| G02B6/34 \| G01N21/39 \| G02B6/26 \| H01S3/10
专利代理人	-
代理机构	NIXON & VANDERHYE P.C.
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/46516
专题	半导体激光器专利数据库
作者单位	KYTON, LLC
推荐引用方式 GB/T 7714	KOCHERGIN, VLADIMIR,SWINEHART, PHILIP. System and method for measuring physical stimuli using vertical cavity surface emitting lasers with integrated tuning means. US6836578[P]. 2004-12-28.

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