-
公开(公告)号：US4807950A
公开(公告)日：1989-02-28
申请号：US122830
申请日：1987-11-19
申请人： William H. Glenn , Gerald Meltz , Elias Snitzer
发明人： William H. Glenn , Gerald Meltz , Elias Snitzer
IPC分类号： G01J1/02 , G01K11/12 , G01L1/00 , G02B5/18 , G02B6/00 , G02B6/02 , G02B6/124 , G02B6/34 , G02F1/01
CPC分类号： G02B5/18 , G02B6/02133 , G02B6/022 , G02B6/02204 , G02B6/124 , Y10S359/90
摘要： An optical fiber has a dielectric periodic index of refraction phase grating established in its core by intense angled application of several transverse beams of ultraviolet light, enabling the establishment of a distributed, spatially resolving optical fiber strain gauge.
摘要翻译： 光纤通过强烈的角度施加几个紫外线的横梁，具有建立在其芯中的折射相位光栅的介电周期性折射率，使得能够建立分布式空间分辨的光纤应变计。
-
公开(公告)号：US4806012A
公开(公告)日：1989-02-21
申请号：US122826
申请日：1987-11-19
申请人： Gerald Meltz , William H. Glenn , Elias Snitzer
发明人： Gerald Meltz , William H. Glenn , Elias Snitzer
CPC分类号： G01K5/52 , G01B11/16 , G01D5/35383
摘要： A distributed, spatially resolving optical fiber strain gauge in which the core of the optical fiber is written with periodic grating patterns effective for transmitting and reflecting light injected into the core. Spectral shifts in the transmitted and reflected light indicate the intensity of strain or temperature variations at positions of the grating corresponding to the associated wavelengths of injected light.
摘要翻译： 分布式，空间分辨的光纤应变计，其中光纤的芯被写入有效地用于透射和反射注入到芯中的光的周期性光栅图案。 透射光和反射光中的光谱偏移表示对应于注入光的相关波长的光栅位置处的应变强度或温度变化。
-
公开(公告)号：US4725110A
公开(公告)日：1988-02-16
申请号：US925512
申请日：1986-10-27
申请人： William H. Glenn , Gerald Meltz , Elias Snitzer
发明人： William H. Glenn , Gerald Meltz , Elias Snitzer
IPC分类号： G01J1/02 , G01K11/12 , G01L1/00 , G02B5/18 , G02B6/00 , G02B6/02 , G02B6/124 , G02B6/34 , G02B6/12
CPC分类号： G02B5/18 , G02B6/02133 , G02B6/022 , G02B6/02204 , G02B6/124 , Y10S359/90
摘要： A method of establishing a dielectric periodic index of refraction phase grating upon the core of an optical waveguide by intense angled application of several transverse beams of ultraviolet light, enabling the establishment of a distributed, spatially resolving optical fiber strain gauge.
摘要翻译： 通过强烈地角度地施加几束紫外线横向光束，在光波导的核心上建立折射相位光栅的介电周期性折射率的方法，使得能够建立分布式空间分辨的光纤应变计。
-
公开(公告)号：US4761073A
公开(公告)日：1988-08-02
申请号：US915891
申请日：1986-10-03
申请人： Gerald Meltz , William H. Glenn , Elias Snitzer
发明人： Gerald Meltz , William H. Glenn , Elias Snitzer
CPC分类号： G01L1/242 , G01B11/16 , G01D5/35383 , G01K5/52
摘要： A distributed, spatially resolving optical fiber strain gauge in which the core of the optical fiber is written with periodic grating patterns effective for transmitting and reflecting light injected into the core. Spectral shifts in the transmitted and reflected light indicate the intensity of strain or temperature variations at positions of the grating corresponding to the associated wavelengths of injected light.
摘要翻译： 分布式，空间分辨的光纤应变计，其中光纤的芯被写入有效地用于透射和反射注入到芯中的光的周期性光栅图案。 透射光和反射光中的光谱偏移表示对应于注入光的相关波长的光栅位置处的应变强度或温度变化。
-
公开(公告)号：US4302970A
公开(公告)日：1981-12-01
申请号：US148343
申请日：1980-05-09
申请人： Elias Snitzer , William H. Glenn
发明人： Elias Snitzer , William H. Glenn
CPC分类号： G01K11/32
摘要： A temperature probe formed by an optical fiber having a core fabricated from a glass host doped with a trivalent rare earth is positioned at the location temperature is to be measured. One of the rare earth elements, europium, has low lying energy levels that have significant population changes over certain desirable temperature ranges, i.e., related to the population of this particular energy level transition is monitored to determine the temperature at the location of the temperature probe. A simplified embodiment of a temperature measuring device incorporating the optical temperature probe includes at least one LED, or equivalent, to generate light into the input end of the optical fiber. The preselected wavelength of light that corresponds to the absorption line of interest experiences a change in strength as function of temperature. A detector at the output end measures changes in strength of the absorbed light by normalizing to an unabsorbed wavelength of light.
摘要翻译： 由具有由掺杂有三价稀土的玻璃基体制成的芯的光纤形成的温度探针位于要测量的位置温度。 其中一种稀土元素铕具有较低的能级，其在某些理想的温度范围内具有显着的人口变化，即与该特定能量跃迁的群体有关，以监测温度探针位置处的温度 。 结合光学温度探针的温度测量装置的简化实施例包括至少一个LED或等效物，以将光产生到光纤的输入端。 对应于感兴趣的吸收线的光的预选波长经历作为温度函数的强度变化。 输出端的检测器通过归一化为未吸收的波长的波长来测量吸收的光的强度的变化。
-
公开(公告)号：US5042897A
公开(公告)日：1991-08-27
申请号：US456450
申请日：1989-12-26
申请人： Gerald Meltz , William H. Glenn
发明人： Gerald Meltz , William H. Glenn
CPC分类号： G02B6/02133 , G02B6/02109 , G02B6/02128
摘要： An optical waveguide light tapping arrangement includes an optical waveguide having solid portions that guide light in a first path along a longitudinal axis, with at least one grating region being embedded in the solid portion at a location remote from its end portions. The grating region includes a multitude of grating elements extending with a substantially equal longitudinal spacing at an oblique angle relative to the longitudinal axis to redirect light reaching the grating elements between the first path and at least one second path extending externally of the waveguide at an angle relative to the longitudinal axis that depends on the oblique angle. When light is directed in one of the first and second paths toward the grating region, it is redirected by the grating elements into the respectively other of the second and first paths with attendant in-phase combination in the other path of light having a wavelength within a narrow range around a central wavelength that is in a predetermined relationship to the spacing of the grating elements. The light propagating in the other path can then be captured. The grating elements are formed in the core by exposing the core to an interference pattern of two ultraviolet radiation beams that are symmetrical with respect to a plane extending at the oblique angle relative to the core axis.
-
公开(公告)号：US5007705A
公开(公告)日：1991-04-16
申请号：US456449
申请日：1989-12-26
CPC分类号： G02B6/29322 , G02B6/022 , G02B6/02204 , G02B6/29395 , G02F1/0115 , G02F1/0126 , G02F1/0131 , G02F1/0147 , G02F1/125 , G02F2201/02 , G02F2201/307 , G02F2203/055
摘要： A variable light filtering arrangement includes at least one optical fiber section including a waveguiding core, and at least one permanent Bragg grating region in the optical fiber section. The grating region includes a plurality of grating elements constituted by periodic refractive index variations of a predetermined initial periodicity and cumulatively redirecting, of the light launched into the core for guided propagation therein, that having an axial wavelength within a narrow band around a central wavelength that is determined by the periodicity and refractive index variations of the grating elements. At least one of the periodicity and refractive index variations of the grating region is controlledly modified in such a manner as to temporarily change the central wavelength within a predetermined wavelength range.
摘要翻译： 可变光滤波装置包括至少一个包括波导芯的光纤部分和光纤部分中的至少一个永久布拉格光栅区域。 光栅区域包括多个光栅元件，其由预定的初始周期的周期性折射率变化构成，并且累积地重定向发射到芯中的光，用于在其中引导传播，其具有围绕中心波长的窄带内的轴向波长， 由光栅元件的周期性和折射率变化决定。 光栅区域的周期性和折射率变化中的至少一种可以以预定波长范围内暂时改变中心波长的方式进行可变地修改。
-
8.发明授权
公开(公告)号：US5048913A
公开(公告)日：1991-09-17
申请号：US457043
申请日：1989-12-26
申请人： William H. Glenn , William W. Morey , Gerald Meltz
发明人： William H. Glenn , William W. Morey , Gerald Meltz
CPC分类号： G02B6/02085 , G02B6/14 , G02B6/021
摘要： An optical waveguide mode discrimination light filtering arrangement inclues an optical waveguide having an elongated multimode core, and a cladding that guides at least two modes of light of a given frequency in an elongated path along a longitudinal axis of said core. At least one grating region is embedded in the core at a location remote from the end portions of the core and has a multitude of grating elements extending with a substantially equal longitudinal spacing substantially normal to the longitudinal axis to reflect light propagating in the path and reaching the grating elements back into the path for longitudinal propagation therein opposite to the original propagation direction. The spacing of the grating elements is so related to the axial wavelength of one of the modes that the reflected light of the one mode interferes constructively while the light of any other of the modes passes through the grating region in the original propagation direction substantially without attenuation.
摘要翻译： 光波导模式识别光滤波装置包括具有细长多模核心的光波导和包围，沿着所述芯的纵向轴在细长路径中引导给定频率的至少两种模式的光。 至少一个光栅区域嵌入到远离芯的端部的位置处的芯中，并且具有多个光栅元件，其基本上与纵向轴线基本上相等的纵向间隔延伸，以反射在路径中传播的光并达到 光栅元件返回到与原始传播方向相反的纵向传播路径。 光栅元件的间距与一个模式的反射光的结构性干涉的一种模式的轴向波长有关，而任何其他模式的光在原始传播方向上的光线基本上没有衰减 。
-
公开(公告)号：US4818102A
公开(公告)日：1989-04-04
申请号：US945158
申请日：1986-12-22
申请人： William H. Glenn
发明人： William H. Glenn
CPC分类号： G01J5/08 , G01J5/0834 , G01J5/0896 , G01J5/60 , G01J2001/4242 , G01J2005/0051
摘要： An optical pyrometer makes a temperature measurement of a remote body that is insensitive to spurious radiation by modulating the temperature of the body of optical irradiation in a first optical wavelength range at a low modulation frequency and synchronous detection of emitted optical radiation in a second optical wavelength range, together with modulation in the second optical wavelength range and detection in the first wavelength range. The measurement so made are combined to form a parameter representative of the body temperature that is insensitive to the environment of the body.
摘要翻译： 光学高温计通过在低调制频率下调制第一光波长范围内的光照射体的温度并以第二光波长的发射光辐射进行同步检测，来对偏振辐射不敏感的远端体进行温度测量 范围，以及在第二光学波长范围内的调制和在第一波长范围内的检测。 将如此制成的测量结合形成表示对身体环境不敏感的体温的参数。
-
公开(公告)号：US4123149A
公开(公告)日：1978-10-31
申请号：US814052
申请日：1977-07-08
IPC分类号： H01S3/082
CPC分类号： H01S3/0826
摘要： An unstable resonator having high magnification and capable of accommodating an active medium having high gain and small dimensions is disclosed. The unstable resonator, formed with a pair of coupled cavities, has a diffraction grating capable of providing high resolution of the bandwidth of radiation from a high gain medium such as a dye medium and is capable of providing a laser beam with a continuous cross-section having far field characteristics of high quality.
摘要翻译： 公开了一种具有高放大率并且能够容纳具有高增益和小尺寸的有源介质的不稳定谐振器。 形成有一对耦合空腔的不稳定谐振器具有能够提供来自诸如染料介质的高增益介质的辐射带宽的高分辨率的衍射光栅，并且能够提供具有连续横截面的激光束 具有高品质的远场特性。
-
-
-
-
-
-
-
-
-
搜索结果
19 条记录 (耗时 0.019 秒)
