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1. 发明授权

US5108183A Interferometer utilizing superfluorescent optical source 失效
标题翻译：干涉仪采用超荧光光源
公开(公告)号：US5108183A
公开(公告)日：1992-04-28
申请号：US565248
申请日：1990-08-09
申请人： John J. Fling , Byoung Y. Kim , Kenneth A. Fesler , Michel J. F. Digonnet , Herbert J. Shaw
发明人： John J. Fling , Byoung Y. Kim , Kenneth A. Fesler , Michel J. F. Digonnet , Herbert J. Shaw
IPC分类号： G01B9/02 , G01C19/72 , G01P3/36 , H01S3/06 , H01S3/07 , H01S3/10
CPC分类号： G01C19/721 , G01P3/36
摘要： An improved broadband light source for a Sagnac interferometer includes a waveguide, such as a fluorescent optical fiber, that is pumped by a pump source with a sufficient intensity to generate temporally incoherent light. The fluorescent optical fiber has first and second ends, one end being an input end of the fiber. The broadband light is provided at an output of the fluorescent optical fiber and is input to the interferometer. In order to prevent laser oscillations between the light source and the interferometer, one end of the fluorescent optical fiber is formed so as to prevent reflections. The light output from the fluorescent fiber to the interferometer comprises only that light that initially propagates toward the output of the optical fiber. In one embodiment of the light source, the pump light from the pump source is coupled into the fluorescent optical fiber in a direction so that it travels away from the output of the fluorescent optical fiber towards the first end. In an alternative embodiment, the fluorescent optical fiber is a doubly clad optical fiber having a first acceptance region and a second acceptance region at the first end. The pump light is introduced into an aperture window between the two acceptance regions so that the pump light can be introduced into the first end at an angle without requiring a reflective surface at the first end.
摘要翻译：用于Sagnac干涉仪的改进的宽带光源包括诸如荧光光纤的波导，其由泵浦源以足够的强度泵浦以产生时间上不相干的光。荧光光纤具有第一和第二端，一端是光纤的输入端。宽带光被提供在荧光光纤的输出处，并被输入到干涉仪。为了防止光源和干涉仪之间的激光振荡，形成荧光光纤的一端以防止反射。从荧光纤维到干涉仪的光输出仅包括最初向光纤的输出传播的光。在光源的一个实施例中，来自泵浦源的泵浦光沿着使得其从荧光光纤的输出朝着第一端行进的方向耦合到荧光光纤中。在替代实施例中，荧光光纤是在第一端具有第一接收区和第二接收区的双包层光纤。泵浦光被引入两个接受区域之间的孔眼窗口中，使得泵浦光可以一角度被引入第一端，而不需要第一端的反射表面。

2. 发明授权

US4964131A Broadband optical fiber laser 失效
标题翻译：宽带光纤激光器
公开(公告)号：US4964131A
公开(公告)日：1990-10-16
申请号：US319241
申请日：1989-03-09
申请人： Karen Liu , Byoung Y. Kim , Michel J. F. Digonnet , Kenneth A. Fesler , Herbert J. Shaw
发明人： Karen Liu , Byoung Y. Kim , Michel J. F. Digonnet , Kenneth A. Fesler , Herbert J. Shaw
IPC分类号： G01C19/72 , H01S3/067 , H01S3/094 , H01S3/0941
CPC分类号： G01C19/721 , H01S3/06795 , H01S3/0941 , H01S3/094003
摘要： An optical fiber laser includes a single-mode optical fiber doped with a lasing material such as Neodymium. The optical fiber is pumped with a pump optical signal having a pump wavelength selected to cause spontaneous emission of an optical signal at a second wavelength different from the pump wavelength. The optical fiber is formed into a laser cavity such as by including a suitable reflector at each of the two ends of a suitable length of the optical fiber so that the emitted optical signal oscillates therein. One of the reflectors has a reflectivity at the wavelength of the emitted light so that most (e.g., approximately 95%) of the emitted light is reflected back into the laser cavity and a smaller portion (e.g, approximately 5%) is transmitted through the mirror as a laser output signal. Alternatively, the optical fiber can be formed into a ring laser structure using an optical coupler that couples a substantial portion (e.g., approximately 95%) of the emitted light back into the ring for recirculation therein and provides a smaller portion of the emitted light (e.g., approximately 5%) as a laser output signal. The wavelength of the pump optical signal is selected to be outside the pump variable tuning range of the Neodymium-doped optical fiber (i.e., the range of pump wavelengths which stimulate emitted wavelengths having a average wavelengths with a generally one-to-one correspondence to the pump wavelength). Pumping with a pump signal outside the pump variable tuning ranges causes the emitted light to have a broad spectral envelope of longitudinal modes having emission wavelengths corresponding to substantially all the pump variable tuning range. Thus, by pumping the optical fiber with a single pump wavelength, a broadband laser output signal is generated.
摘要翻译：光纤激光器包括掺杂有诸如钕的激光材料的单模光纤。用选择了泵浦波长的泵浦光信号来泵浦光纤，以引起与泵浦波长不同的第二波长的光信号的自发发射。光纤被形成为激光腔，例如通过在光纤的适当长度的两端中的每一端包括合适的反射器，使得所发射的光信号在其中振荡。反射器中的一个在发射光的波长处具有反射率，使得大部分（例如，大约95％）的发射光被反射回到激光腔中，并且较小的部分（例如，大约5％）通过镜像为激光输出信号。或者，可以使用光耦合器将光纤形成为环形激光器结构，所述光耦合器将发射的光的大部分（例如，大约95％）重新连接到环中以在其中再循环，并且提供较小部分的发射光例如约5％）作为激光输出信号。泵浦光信号的波长被选择在掺杂钕光纤的泵可变调谐范围之外（即，泵浦波长的范围，其激发平均波长与一般一一对应的发射波长泵浦波长）。在泵可变调谐范围之外用泵浦信号泵送使得发射的光具有宽泛的光谱包络，其具有与基本上所有泵可变调谐范围对应的发射波长的纵向模式。因此，通过用单个泵浦波长泵浦光纤，产生宽带激光输出信号。

3. 发明授权

US5106193A Optical waveguide amplifier source gyroscope 失效
标题翻译：光波导放大器源光源
公开(公告)号：US5106193A
公开(公告)日：1992-04-21
申请号：US565255
申请日：1990-08-09
申请人： Kenneth A. Fesler , Michel J. F. Digonnet , Byoung Y. Kim , Herbert J. Shaw
发明人： Kenneth A. Fesler , Michel J. F. Digonnet , Byoung Y. Kim , Herbert J. Shaw
IPC分类号： G01B9/02 , G01C19/64 , G01C19/72 , G02B6/00 , G02B6/036 , G02F1/35 , H01S3/07 , H01S3/10
CPC分类号： G01B9/0209 , G01B9/0201 , G01C19/64 , G01B2290/70
摘要： An improved broadband light source for a Sagnac interferometer includes a fluorescent optical medium that is pumped by light from a pump source with a sufficient intensity to cause the fluorescent optical medium to generate temporally incoherent light by superfluorescence. In the preferred embodiment, the superfluorescent optical medium comprises an optical fiber which is backward pumped. The signal output from the interferometer loop is amplified by the optical gain of the superfluorescent fiber which acts as a light source and as an amplifier. In order to avoid gain modulation in the superflorescent fiber, the modulation frequency is selected so that the modulation gain depth is substantially reduced.

4. 发明授权

US4938556A Superfluorescent broadband fiber laser source 失效
标题翻译：超荧光宽带光纤激光源
公开(公告)号：US4938556A
公开(公告)日：1990-07-03
申请号：US281088
申请日：1988-12-07
申请人： Michel J. F. Digonnet , Karen Liu , Byoung Y. Kim , Herbert J. Shaw , John J. Fling
发明人： Michel J. F. Digonnet , Karen Liu , Byoung Y. Kim , Herbert J. Shaw , John J. Fling
IPC分类号： H01S3/067 , H01S3/0933 , H01S3/094 , H04B10/17 , H04J14/02
CPC分类号： H04B10/2912 , H01S3/0933 , H01S3/094003 , H04B10/291 , H04J14/02 , H01S3/06787 , H01S3/094011
摘要： A superfluorescent broadband fiber laser source comprises a fiber doped with laser material coupled to a multiplexing coupler. In the preferred embodiment, a source of pumping illumination provides pumping light to the doped fiber, and the coupler is adjusted to have a 0% coupling efficiency at the wavelength of the source. The pumping light is sufficiently intense to produce amplified spontaneous emission within the doped fiber, and gives rise to a forward signal and a backward signal. One of the superfluorescent signals is reflected back to the doped fiber by a reflector cemented to one end of the doped fiber or to one end of another fiber through the coupling function of the coupler. The coupler is adjusted to provide complete coupling at the frequency of the lasing light. The temperature dependence of the coupler can be selected to reduce or cancel the temperature dependence of the superfluorescent signal. Other arrangements utilizing the multiplexing properties of the coupler are also described. An all-fiber reflector can also be used.

5. 发明授权

US5177562A Stability compensated broadband source and fiber interferometer 失效
标题翻译：稳定补偿宽带源和光纤干涉仪
公开(公告)号：US5177562A
公开(公告)日：1993-01-05
申请号：US880290
申请日：1992-05-04
申请人： Paul F. Wysocki , Michel J. F. Digonnet , Byoung Y. Kim , Herbert J. Shaw
发明人： Paul F. Wysocki , Michel J. F. Digonnet , Byoung Y. Kim , Herbert J. Shaw
IPC分类号： G01B9/02 , G01C19/72 , H01S3/067
CPC分类号： G01B9/0209 , G01C19/721 , H01S3/06795 , G01B2290/70
摘要： The present invention discloses a thermally stable rare-earth doped fiber source comprising an active medium such as Erbium or Neodymium. The thermal stability of the mean wavelength of such a source is determined by three contributions as expressed by the following differential equation: ##EQU1## The first term is the intrinsic temperature dependence of the active medium, the second term is the pump power dependence and the third term is a contribution that arises from the dependence of the emission wavelength on the pump wavelength. The method of the present invention minimizes the temperature dependence on the mean wavelength by using the above equation and optimizing the values of the pump power and the pump wavelength so that the three contributions in the governing equation cancel each other.
摘要翻译：本发明公开了一种包含铒或钕等活性介质的热稳定性稀土掺杂光纤源。这种源的平均波长的热稳定性由以下微分方程表示的三个贡献确定：第一项是活性介质的固有温度依赖性，第二项是泵浦功率依赖性，第三项是由发射波长对泵浦波长的依赖性引起的贡献。本发明的方法通过使用上述方程使对平均波长的温度依赖性最小化，并优化泵功率和泵浦波长的值，使得控制方程中的三个贡献相互抵消。

6. 发明授权

US5189676A Broadband laser source 失效
标题翻译：宽带激光源
公开(公告)号：US5189676A
公开(公告)日：1993-02-23
申请号：US403703
申请日：1989-09-06
申请人： Paul F. Wysocki , Michel J. F. Digonnet , Byoung Y. Kim
发明人： Paul F. Wysocki , Michel J. F. Digonnet , Byoung Y. Kim
IPC分类号： H01S3/067
CPC分类号： H01S3/06795
摘要： A laser source comprises an optical fiber doped with a homogeneously broadened lasing medium, preferably with Erbium, pumped by a laser pump source and an intracavity acousto-optic modulator. When the acousto-optic modulator is driven by a variable frequency source, the Erbium fluorescence line emitted by the Erbium-doped optical fiber can be electronically tuned. In another embodiment, an electronic sweep waveform is used to frequency modulate the acoustic signal produced by the acousto-optic modulator. Without the low-rate frequency modulation, Erbium in a silica optical fiber is a mostly homogeneously broadened gain medium with a narrow laser linewidth. When measured on a long time scale, low-rate frequency modulation provides a broader spectral width, on the order of 19 nm, which makes such a source on an ideal source for certain optical applications such as fiber optic gyroscopes.
摘要翻译：激光源包括掺杂有均匀扩展的激光介质的光纤，优选地由铒掺杂，由激光泵浦源和腔内声光调制器泵浦。当声光调制器由可变频率源驱动时，掺铒光纤发射的铒荧光线可以被电子调谐。在另一个实施例中，使用电子扫描波形来对由声光调制器产生的声信号进行频率调制。在没有低速率频率调制的情况下，二氧化硅光纤中的铒是激光线宽窄的大部分均匀的增宽介质。当在长时间尺度上测量时，低速率频率调制提供了更宽的光谱宽度，大约为19nm，这使得这样的光源成为诸如光纤陀螺仪之类的某些光学应用的理想光源。

7. 发明授权

US5255274A Broadband laser source 失效
标题翻译：宽带激光源
公开(公告)号：US5255274A
公开(公告)日：1993-10-19
申请号：US895602
申请日：1992-06-08
申请人： Paul F. Wysocki , Michel J. F. Digonnet , Byoung Y. Kim
发明人： Paul F. Wysocki , Michel J. F. Digonnet , Byoung Y. Kim
IPC分类号： H01S3/067 , H01S3/10
CPC分类号： H01S3/06795
摘要： A laser source comprises an optical fiber doped with a homogeneously broadened lasing medium, preferably with Erbium, pumped by a laser pump source and an intracavity acousto-optic modulator. When the acousto-optic modulator is driven by a variable frequency source, the Erbium fluorescence line emitted by the Erbium-doped optical fiber can be electronically tuned. In another embodiment, an electronic sweep waveform is used to frequency modulate the acoustic signal produced by the acousto-optic modulator. Without the low-rate frequency modulation, Erbium in a silica optical fiber is a mostly homogeneously broadened gain medium with a narrow laser linewidth. When measured on a long time scale, low-rate frequency modulation provides a broader spectral width, on the order of 19 nm, which makes such a source an ideal source for certain optical applications such as fiber optic gyroscopes.
摘要翻译：激光源包括掺杂有均匀扩展的激光介质的光纤，优选地由铒掺杂，由激光泵浦源和腔内声光调制器泵浦。当声光调制器由可变频率源驱动时，掺铒光纤发射的铒荧光线可以被电子调谐。在另一个实施例中，使用电子扫描波形来对由声光调制器产生的声信号进行频率调制。在没有低速率频率调制的情况下，二氧化硅光纤中的铒是激光线宽窄的大部分均匀的增宽介质。当在长时间尺度上测量时，低速率频率调制提供了更宽的光谱宽度，约为19nm，这使得这种光源成为诸如光纤陀螺仪之类的某些光学应用的理想光源。

8. 发明授权

US06886404B2 Fiber optic accelerometer 失效
标题翻译：光纤加速度计
公开(公告)号：US06886404B2
公开(公告)日：2005-05-03
申请号：US10358649
申请日：2003-02-05
申请人： Michel J. F. Digonnet , Elliot M. Burke , John J. Fling
发明人： Michel J. F. Digonnet , Elliot M. Burke , John J. Fling
IPC分类号： G01P15/093 , G01P15/097 , G01P15/08
CPC分类号： G01P15/093 , G01P15/097
摘要： An acceleration transducer for use in an accelerometer includes a proof mass that comprises a transmissive optics device arranged to receive an optical signal such that the optical signal propagates through the transmissive optics device along a first optical path having a selected optical path length. A support assembly is arranged to support the proof mass such that the transmissive optics device moves from a reference position along a selected sensing axis in response to an acceleration of the proof mass along the selected sensing axis and produces an optical path length change that indicates the acceleration.
摘要翻译：用于加速度计的加速度传感器包括检测质量块，其包括布置成接收光信号的透射光学器件，使得光信号沿着具有所选光程长度的第一光路传播通过透射光学器件。支撑组件布置成支撑证明块，使得透射光学装置响应于沿所选择的感测轴的校准质量块的加速度沿着选定的感测轴线从参考位置移动，并产生光程长度变化，其指示加速。

9. 发明授权

US4554510A Switching fiber optic amplifier 失效
标题翻译：开关光纤放大器
公开(公告)号：US4554510A
公开(公告)日：1985-11-19
申请号：US531231
申请日：1983-09-12
申请人： Herbert J. Shaw , Michel J. F. Digonnet
发明人： Herbert J. Shaw , Michel J. F. Digonnet
IPC分类号： G01P9/00 , G01C19/64 , G01C19/72 , G02B6/00 , G02F1/01 , G02F1/313 , G02F1/39 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/091 , H01S3/094 , H01S3/10 , H01S3/102 , H01S3/16 , H01S3/23 , H03F3/68
CPC分类号： H01S3/06754 , H01S3/094011 , H01S3/10007 , H01S3/1611 , H01S3/1643
摘要： A fiber optic amplifier utilizes a crystal fiber of laser material to bidirectionally amplify light signals. This amplifier permits the application of both pumping illumination and the signal to be amplified to the end of the crystal fiber to avoid the disadvantages inherent in side pumping this fiber. End pumping is accomplished by taking advantage of the slow spontaneous fluorescence of the laser crystal to sequentially apply the pumping illumination and then the signal to be amplified to the crystal. This sequential application of signals is made possible through the use of a switchable coupler which allows light to be selectively coupled from either of a pair of input optical fibers to a single output optical fiber which is coupled to the crystal fiber. The pumping illumination is initially supplied to the crystal fiber to invert the ions within the crystal. Once these ions are inverted, the coupler is switched to permit the application of the signal to be amplified to the crystal, and the application of pumping illumination is temporarily discontinued. The signal to be amplified propagates through the crystal to stimulate emission of coherent light from the laser material resulting in amplification of the signal. When this amplification process is complete, pumping illumination is again applied through the switch to the crystal fiber.
摘要翻译：光纤放大器利用激光材料的晶体光纤双向放大光信号。该放大器允许将泵浦照明和信号放大到晶体光纤的端部，以避免侧向泵浦该光纤的固有缺点。通过利用激光晶体的缓慢的自发荧光来顺序地施加泵浦照明，然后将待放大的信号施加到晶体来实现末端泵浦。通过使用可切换耦合器来实现信号的这种顺序应用，其允许光从一对输入光纤中的任一个选择性地耦合到耦合到晶体光纤的单个输出光纤。泵浦照明最初被提供给晶体纤维以反转晶体内的离子。一旦这些离子被反转，耦合器被切换以允许将信号施加到晶体上，并且暂时停止施加泵浦照明。要放大的信号通过晶体传播，以激发来自激光材料的相干光的发射，从而产生信号的放大。当该放大过程完成时，泵浦照明再次通过开关施加到晶体光纤。

10. 发明授权

US4515431A Fiber optic amplifier 失效
标题翻译：光纤放大器
公开(公告)号：US4515431A
公开(公告)日：1985-05-07
申请号：US407136
申请日：1982-08-11
申请人： Herbert J. Shaw , Marvin Chodorow , Michel J. F. Digonnet
发明人： Herbert J. Shaw , Marvin Chodorow , Michel J. F. Digonnet
IPC分类号： G02B6/00 , G02B6/02 , G02B6/28 , G02B6/34 , G02F1/35 , H01S3/0933 , H01S3/094 , G02B5/172
CPC分类号： H01S3/094003 , G02B6/2821 , G02B6/2826 , G02B6/283 , H01S3/0933 , H01S3/094011
摘要： An optical fiber bidirectional amplifier includes a pair of small diameter optical fibers, arranged in a side-by-side configuration, the first fiber providing a pumping source and the second fiber doped with a material which will lase at the frequency of the signal to be amplified. The signal to be amplified propagates through the second fiber to stimulate emission of coherent light from the lasing material, resulting in amplification of the signal. The refractive indexes of the first and second fibers are substantially identical, but the coupling characteristic provided by the geometrical relationship between the pair of fibers yields a wavelength dependent coupling efficiency. Specifically, the coupling efficiency at the wavelength of the pumping source is relatively high, while the coupling efficiency at the wavelength of the signal to be amplified is relatively low. Thus, the pumping illumination is coupled from the first fiber to the second fiber to stimulate the doping material in the second fiber, while the signal to be amplified remains relatively uncoupled, and is amplified by the coherent light emitted by the lasing material.
摘要翻译：光纤双向放大器包括一对并排配置的小直径光纤，第一光纤提供泵浦源，第二光纤掺杂有将以信号频率变化的材料放大待放大的信号通过第二光纤传播，以刺激来自激光材料的相干光的发射，导致信号的放大。第一和第二纤维的折射率基本上相同，但由一对纤维之间的几何关系提供的耦合特性产生了与波长相关的耦合效率。具体地说，在泵浦源的波长处的耦合效率相对较高，而要放大的信号的波长的耦合效率相对较低。因此，泵浦照明从第一光纤耦合到第二光纤以刺激第二光纤中的掺杂材料，而待放大的信号保持相对不耦合，并且由激光材料发射的相干光放大。

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