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    • 2. 发明申请
    • FIBER BRAGG GRATING DEVICES UTILIZING SLOW LIGHT
    • 光纤布拉格光栅设备利用慢光
    • US20110001981A1
    • 2011-01-06
    • US12792631
    • 2010-06-02
    • Michel J.F. DigonnetShanhui FanHe WenMatthew A. Terrel
    • Michel J.F. DigonnetShanhui FanHe WenMatthew A. Terrel
    • G01B9/02G02B6/028
    • G01J9/0246G01D5/35316G01K11/3206G01L1/246G02B6/02076G02B6/0208
    • In certain embodiments, an optical device and a method of use is provided. The optical device includes a fiber Bragg grating having a substantially periodic refractive index modulation along a length of the fiber Bragg grating. The fiber Bragg grating has a power transmission spectrum with a plurality of local transmission minima, wherein each pair of neighboring local transmission minima has a local transmission maximum therebetween. The local transmission maximum has a maximum power at a transmission peak wavelength. The optical device further includes a narrowband optical source in optical communication with a first optical path and a second optical path. The narrowband optical source is configured to generate light having a wavelength at or in the vicinity of a local transmission maximum or at or in the vicinity of a wavelength at which the power transmission spectrum has a maximum slope between a local transmission maximum and either one of two local transmission minima neighboring the local transmission maximum.
    • 在某些实施例中,提供了光学装置和使用方法。 光学装置包括光纤布拉格光栅,其具有沿着光纤布拉格光栅的长度的基本上周期性的折射率调制。 光纤布喇格光栅具有多个局部透射最小值的功率透射光谱,其中每对相邻的局部透射最小值在其间具有局部透射最大值。 本地传输最大值在传输峰值波长处具有最大功率。 光学装置还包括与第一光路和第二光路光学通信的窄带光源。 窄带光源被配置为产生具有在本地发射最大值附近或附近的波长的光,或者在功率透射光谱具有局部透射最大值与本发明最大值之间的最大斜率的波长附近或附近 两个本地传输最小值相邻本地传输最大值。
    • 6. 发明申请
    • UNIDIRECTIONAL CROW GYROSCOPE
    • US20090244544A1
    • 2009-10-01
    • US12416767
    • 2009-04-01
    • Matthew A. TerrelMichel J.F. DigonnetShanhui Fan
    • Matthew A. TerrelMichel J.F. DigonnetShanhui Fan
    • G01C19/72
    • G01C19/727G01C19/721
    • An optical waveguide gyroscope includes at least one optical coupler configured to receive a first optical signal at a first port, to transmit a second optical signal to a second port, and to transmit a third optical signal to a third port. The optical waveguide gyroscope further includes a plurality of resonant waveguides optically coupled to the second port and the third port. The resonant waveguides are generally adjacent to one another and optically coupled to one another. At least a portion of the second optical signal propagates from the second port to the third port by propagating through the plurality of resonant waveguides, and at least a portion of the third optical signal propagates from the third port to the second port by propagating through the plurality of resonant waveguides. The at least a portion of the second optical signal propagates through each resonant waveguide of the plurality of resonant waveguides in a clockwise direction and the at least a portion of the third optical signal propagates through each resonant waveguide of the plurality of resonant waveguides in a counterclockwise direction.
    • 光波导陀螺仪包括至少一个光耦合器,被配置为在第一端口处接收第一光信号,以将第二光信号传输到第二端口,并将第三光信号传输到第三端口。 光波导陀螺仪还包括光耦合到第二端口和第三端口的多个谐振波导。 谐振波导通常彼此相邻并且彼此光学耦合。 通过传播多个谐振波导,第二光信号的至少一部分从第二端口传播到第三端口,并且第三光信号的至少一部分从第三端口传播到第二端口,传播通过 多个谐振波导。 第二光信号的至少一部分沿顺时针方向传播通过多个谐振波导的每个谐振波导,并且第三光信号的至少一部分沿逆时针方向传播通过多个谐振波导的每个谐振波导 方向。
    • 8. 发明授权
    • Optical sensor having a non-negligible source coherence length
    • 光学传感器具有不可忽略的源相干长度
    • US08437005B2
    • 2013-05-07
    • US13493844
    • 2012-06-11
    • Michel J.F. DigonnetShanhui FanSeth Lloyd
    • Michel J.F. DigonnetShanhui FanSeth Lloyd
    • G01C19/72
    • G01C19/721
    • An optical sensor, a method of configuring an optical sensor, and a method of using an optical sensor are provided. The optical sensor includes an optical waveguide having a length and a laser source optically coupled to the waveguide. The laser source has a coherence length. Light from the source is transmitted to the waveguide as a first signal propagating along the waveguide in a first direction and a second signal propagating along the waveguide in a second direction opposite to the first direction. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after propagating through the waveguide to generate a third signal. The coherence length is greater than 1 meter or is in a range between 200 microns and 10 centimeters.
    • 提供光学传感器,配置光学传感器的方法以及使用光学传感器的方法。 光学传感器包括具有光学耦合到波导的长度的光波导和激光源。 激光源具有相干长度。 源自光源的光作为沿着波导沿第一方向传播的第一信号被传输到波导,第二信号沿着与第一方向相反的第二方向沿着波导传播。 第一信号和第二信号的光路基本上彼此相互倒数,并且在通过波导传播之后将第一信号和第二信号组合在一起以产生第三信号。 相干长度大于1米或处于200微米至10厘米之间的范围内。
    • 10. 发明申请
    • OPTICAL SENSOR HAVING A NON-NEGLIGIBLE SOURCE COHERENCE LENGTH
    • 具有不可忽略的源距离长度的光学传感器
    • US20120281225A1
    • 2012-11-08
    • US13493844
    • 2012-06-11
    • Michel J.F. DigonnetShanhui FanSeth Lloyd
    • Michel J.F. DigonnetShanhui FanSeth Lloyd
    • G01C19/72G01B9/02
    • G01C19/721
    • An optical sensor, a method of configuring an optical sensor, and a method of using an optical sensor are provided. The optical sensor includes an optical waveguide having a length and a laser source optically coupled to the waveguide. The laser source has a coherence length. Light from the source is transmitted to the waveguide as a first signal propagating along the waveguide in a first direction and a second signal propagating along the waveguide in a second direction opposite to the first direction. The optical paths of the first signal and the second signal are substantially reciprocal with one another and the first signal and the second signal are combined together after propagating through the waveguide to generate a third signal. The coherence length is greater than 1 meter or is in a range between 200 microns and 10 centimeters.
    • 提供光学传感器,配置光学传感器的方法以及使用光学传感器的方法。 光学传感器包括具有光学耦合到波导的长度的光波导和激光源。 激光源具有相干长度。 源自光源的光作为沿着波导沿第一方向传播的第一信号被传输到波导,第二信号沿着与第一方向相反的第二方向沿着波导传播。 第一信号和第二信号的光路基本上彼此相互倒数,并且在通过波导传播之后将第一信号和第二信号组合在一起以产生第三信号。 相干长度大于1米或处于200微米至10厘米之间的范围内。