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公开(公告)号：US06574406B2
公开(公告)日：2003-06-03
申请号：US09950488
申请日：2001-09-11
申请人： Benjamin J. Ainslie , Monica K. Davis , Matthew J. Dejneka , David A. S. Loeber , Raymond P. Smith
发明人： Benjamin J. Ainslie , Monica K. Davis , Matthew J. Dejneka , David A. S. Loeber , Raymond P. Smith
IPC分类号： G02B602
CPC分类号： G02B6/03694 , G02B6/02052 , G02B6/03622 , G02B6/274 , G02B6/29319 , H01S3/094003 , H01S3/094053 , H01S3/0941
摘要： The invention provides a selectively absorbing optical fiber that is transparent at pump wavelengths, and highly absorbing at signal wavelengths. The selectively absorbing optical fiber includes selectively absorbing species, such as rare earth ions, in concentrations sufficient to provide the desired absorbance selectivity. The fiber is useful as a fiber pigtail for pump lasers in optical amplifiers, where it can reduce the effects of multi-path interference by absorbing stray light with wavelengths in the signal band.
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公开(公告)号：US06751241B2
公开(公告)日：2004-06-15
申请号：US09968354
申请日：2001-09-27
IPC分类号： H01S300
CPC分类号： H01S3/063 , H01S3/06729 , H01S3/0675 , H01S3/06754 , H01S3/094042 , H01S3/094069 , H01S3/09415 , H01S3/2308
摘要： An optically active waveguide laser (30) includes a multimode portion (126) for carrying more than one spatial mode at a predetermined wavelength chosen from a bandwidth including a pump wavelength (64) and the lasing wavelength (66). The multimode portion (126) has a first refractive index. A cladding portion (386) is proximate the multimode portion (126). A multimode grating (60, 56, or 62) is written on at least one section (26) of the multimode portion for reflecting the predetermined wavelength.
摘要翻译： 光学有源波导激光器（30）包括多模部分（126），用于在从包括泵浦波长（64）和激发波长（66）的带宽选择的预定波长处承载多于一个的空间模式。 多模部分（126）具有第一折射率。 包层部分（386）靠近多模部分（126）。 多模光栅（60,56或62）被写在多模部分的至少一个部分（26）上，用于反射预定波长。
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公开(公告)号：US06510264B2
公开(公告)日：2003-01-21
申请号：US09874721
申请日：2001-06-05
IPC分类号： G02B634
CPC分类号： G02B6/29334 , C03C3/064 , C03C3/091 , C03C4/0085 , C03C4/04 , C03C4/085 , C03C17/3411 , C03C23/00 , C03C23/002 , C03C2201/21 , G02B6/02114 , G02B6/12007 , G02B6/124 , G02B6/125 , G02B6/29319 , G02B2006/12147
摘要： The present invention provides photonic devices utilized in optical telecommunications. The photonic devices include photosensitive bulk glass bodies which contain Bragg gratings, particularly with the ultraviolet photosensitive bulk glass bodies directing optical telecommunications wavelength range bands. Preferably the ultraviolet photosensitive bulk glass bodies are batch meltable alkali boro-alumino-silicate bulk glass bodies. The invention includes an optical communications wavelength device for use with wavelength range bands, with the device comprising an input optical waveguide collimator for collimating an input light beam out of an optical waveguide to provide an unguided input light beam including at least one reflective wavelength range band &lgr;R and at least one wavelengths range band &lgr;n; an internal bulk Bragg grating including a transparent photosensitive bulk optical grating medium with an internal modulated refractive index grating with a grating pattern for reflecting the at least one wavelength range band &lgr;R; at least one output coupler for outputting an at least one output wavelength range band; and a substrate structure for securing said bulk Bragg grating relative to the input collimator and the output coupler, with the bulk Bragg grating disposed in the unguided input light beam wherein the at least one wavelengths range band &lgr;n is transmitted through the bulk Bragg grating and the at least one wavelength range band &lgr;R is reflected by the bulk Bragg grating.
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公开(公告)号：US06731839B2
公开(公告)日：2004-05-04
申请号：US10263944
申请日：2002-10-03
IPC分类号： G02B634
CPC分类号： G02B6/29307 , C03B19/02 , C03B32/00 , C03B2201/21 , C03B2201/31 , C03C3/064 , C03C3/091 , C03C4/04 , C03C4/085 , C03C17/3411 , C03C23/00 , G02B6/12007 , G02B6/124 , G02B6/125 , G02B6/2931 , G02B6/29311 , G02B6/29319 , G02B6/29328 , G02B6/29329 , G02B2006/12147
摘要： The present invention provides photonic devices utilized in optical telecommunications. The photonic devices include photosensitive bulk glass bodies which contain Bragg gratings, particularly with the ultraviolet photosensitive bulk glass bodies directing optical telecommunications wavelength range bands. Preferably the ultraviolet photosensitive bulk glass bodies are batch meltable alkali boro-alumino-silicate bulk glass bodies. One embodiment of the invention relates to an optical element including a transparent photosensitive bulk glass having formed therein a non-waveguiding Bragg grating; and a optical element optical surface for manipulating light. Desirably, the photosensitive bulk glass has a 250 nm absorption less than 10 dB/cm.
摘要翻译： 本发明提供了在光通信中使用的光子器件。 光子器件包括含有布拉格光栅的感光体玻璃体，特别是引导光通信波长范围带的紫外感光体玻璃体。 优选地，紫外线感光体玻璃体是可分批熔融的碱金属硼铝硅酸盐块状玻璃体。 本发明的一个实施例涉及一种包括其中形成有非波导布拉格光栅的透明感光体玻璃的光学元件; 以及用于操纵光的光学元件光学表面。 理想地，感光体玻璃具有小于10dB / cm的250nm吸收。
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公开(公告)号：US06584241B2
公开(公告)日：2003-06-24
申请号：US10072559
申请日：2002-02-08
IPC分类号： G02F1295
CPC分类号： G02F1/3519
摘要： A fast, environmentally-stable fiber switch uses a Sagnac interferometer having an active fiber portion located asymmetrically in the loop of the interferometer. A pump pulse is applied to the interferometric loop and acts upon the active fiber portion to cause a change in its refractive index either by a thermal effect or by a non-thermal nonlinear effect. Because the active fiber portion is located asymmetrically in the loop, the change in refractive index of the active fiber portion is seen by the clockwise propagating light signal and the counterclockwise propagating light signal at different times, thus causing a temporary difference in the phase changes experienced by the two counterpropagating light signals. The temporary difference in the phase changes causes the two light signals to combine constructively at a switched output port of the input/output coupler of the interferometric loop until the phase changes of the two signals are again the same, at which time the signals combine at an unswitched output port of the coupler. The on-time of the switch is set primarily by the length of the Sagnac loop, and the fall time, which is caused by the Sagnac architecture, can be fast, even with a relatively slow active fiber.
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公开(公告)号：US6160943A
公开(公告)日：2000-12-12
申请号：US64363
申请日：1998-04-22
CPC分类号： G02B6/262 , G02B6/02042 , G02B6/27 , G02B6/2804 , G02B6/2821 , G02B6/29332
摘要： An optical fiber has two or more cores with respective faces on the fiber's ends. The faces are preferably oriented so that optical radiation can be coupled into or out of the individual cores, thereby permitting, for example, optical radiation from the various cores to be spatially resolved in the far field. The faces can be formed on the fiber by polishing the fiber at an angle with respect to the cores, i.e., with respect to the optical paths traversed by the optical radiation passing through the fiber.
摘要翻译： 光纤具有两个或更多个芯，其纤维端部具有各自的面。 这些面优选地被定向成使得光辐射可以耦合到单独的芯中或从每个芯耦合，从而允许例如来自各种芯的光辐射在远场中被空间分辨。 可以通过相对于芯线以相对于通过光纤的光学辐射穿过的光路的方式抛光光纤而在光纤上形成面。
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7.发明授权System and method for dynamic range extension and stable low power operation of optical amplifiers using pump laser pulse modulation 有权使用泵激光脉冲调制的光放大器的动态范围扩展和稳定低功耗操作的系统和方法公开(公告)号：US07110167B2
公开(公告)日：2006-09-19
申请号：US10896611
申请日：2004-07-20
IPC分类号： H01S3/0941
CPC分类号： H01S3/094003 , H01S3/06754 , H01S3/094076 , H01S5/0652
摘要： An optical amplifier system comprises an optical gain medium receiving an input optical signal and outputting an amplified optical signal and a pump laser optically coupled to an input of the optical gain medium, wherein the pump laser emits a series of pulses to the optical gain medium, the pulses being emitted during coherence collapse operation of the pump laser, the time between pulses being shorter than an excited state lifetime of the optical gain medium.
摘要翻译： 光学放大器系统包括光学增益介质，其接收输入光信号并输出放大的光信号和与光学增益介质的输入光学耦合的泵浦激光器，其中泵浦激光器向光学增益介质发射一系列脉冲， 在泵浦激光器的相干塌陷操作期间发射的脉冲，脉冲之间的时间短于光学增益介质的激发态寿命。
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公开(公告)号：US06739154B2
公开(公告)日：2004-05-25
申请号：US09840856
申请日：2001-04-24
申请人： Monica K. Davis
发明人： Monica K. Davis
IPC分类号： C37B3707
CPC分类号： G02B6/02123
摘要： A method for manufacturing an optical grating on a length of optical fiber having input and output ends. Guided light is conducted into the input end of the fiber and light reflected back from the output end is measured with an optical sensor. An optical grating is formed in the fiber between the input and output ends and guided light is conducted into the input end of the fiber and light reflected back from the grating is measured with an optical sensor. Measured light is compared to determine a percentage of guided light reflected back from the grating.
摘要翻译： 一种用于在具有输入和输出端的光纤长度上制造光栅的方法。 引导光被传导到光纤的输入端，用光学传感器测量从输出端反射的光。 光纤在输入端和输出端之间的光纤中形成，导光被传导到光纤的输入端，用光学传感器测量从光栅反射的光。 比较测量光以确定从光栅反射回来的引导光的百分比。
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9.发明授权Making a photosensitive fiber with collapse of a MCVD tube that is in a small positive pressure atmosphere 失效制造感光纤维，其处于小正压气氛中的MCVD管的塌陷公开(公告)号：US06705123B2
公开(公告)日：2004-03-16
申请号：US09821474
申请日：2001-03-30
申请人： Monica K. Davis , Gang Qi
发明人： Monica K. Davis , Gang Qi
IPC分类号： C03B37027
CPC分类号： C03B37/027 , C03B37/01869 , C03B2201/10 , C03B2201/31 , C03B2205/40 , G02B6/02114
摘要： The present invention includes a method of making a preform for an enhanced photosensitive fiber comprising depositing successive layers of optical material the inside a tube using modified chemical vapor deposition, and collapsing the layers of optical material in a reducing atmosphere with a positive pressure. The present invention also includes a method of making an enhanced photosensitive fiber comprising making a preform using modified chemical vapor deposition wherein the preform is collapsed in a reducing atmosphere with a positive pressure and drawing the preform into a fiber.
摘要翻译： 本发明包括一种制备用于增强感光纤维的预成型体的方法，包括使用改进的化学气相沉积在管内部沉积连续的光学材料层，并在正压下还原气氛中折叠光学材料层。 本发明还包括一种制备增强感光纤维的方法，其包括使用改进的化学气相沉积法制备预成型体，其中预成型件在正压的还原气氛中塌陷并将预成型件拉伸成纤维。
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10.发明授权公开(公告)号：US06393167B1
公开(公告)日：2002-05-21
申请号：US09215403
申请日：1998-12-18
IPC分类号： G02B626
CPC分类号： G02F1/3519
摘要： A fast, environmentally-stable fiber switch uses a Sagnac interferometer having an active fiber portion located asymmetrically in the loop of the interferometer. A pump pulse is applied to the interferometric loop and acts upon the active fiber portion to cause a change in its refractive index either by a thermal effect or by a non-thermal nonlinear effect. Because the active fiber portion is located asymmetrically in the loop, the change in refractive index of the active fiber portion is seen by the clockwise propagating light signal and the counterclockwise propagating light signal at different times, thus causing a temporary difference in the phase changes experienced by the two counterpropagating light signals. The temporary difference in the phase changes causes the two light signals to combine constructively at a switched output port of the input/output coupler of the interferometric loop until the phase changes of the two signals are again the same, at which time the signals combine at an unswitched output port of the coupler. The on-time of the switch is set primarily by the length of the Sagnac loop, and the fall time, which is caused by the Sagnac architecture, can be fast, even with a relatively slow active fiber.
摘要翻译： 快速，环境稳定的光纤开关使用具有位于干涉仪的环路中的非对称位置的有源光纤部分的Sagnac干涉仪。 泵浦脉冲被施加到干涉测量环路上并且作用在有源光纤部分上，以通过热效应或非热非线性效应引起其折射率的变化。 由于有源光纤部分不对称地位于环路中，有源光纤部分的折射率变化可以通过顺时针传播的光信号和逆时针传播的光信号在不同时间看到，从而导致经历的相位变化的暂时的差异 由两个反向传播的光信号。 相位变化的暂时差异导致两个光信号在干涉测量环路的输入/输出耦合器的切换输出端口上建构性地组合，直到两个信号的相位变化再次相同，此时信号在 耦合器的未切换输出端口。 开关的导通时间主要由Sagnac回路的长度决定，即使使用相对较慢的有源光纤，Sagnac架构引起的下降时间也会很快。
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