公开(公告)号：EP2110902A2

公开(公告)日：2009-10-21

申请号：EP09004741.6

申请日：2009-03-31

申请人： OFS Fitel, LLC

发明人： Nicholson, Jeffrey W. ,  Westbrook, Paul

IPC分类号： H01S3/067

CPC分类号： H01S3/06708 ,  H01S3/0675 ,  H01S3/06791

摘要： A fiber laser having at least one pair of reflectors coupled to an optical fiber, the at least one pair of reflectors defining an optical cavity between the at least one pair of reflectors and being configured to reflect light within the optical cavity. At least one light pump is coupled to the optical fiber and configured to provide pump light into the optical cavity, and at least one medium is positioned within the optical cavity and configured to generate signal light from the pump light in the optical cavity. Further, at least one grating positioned within the optical cavity and configured to couple the signal light out of the optical cavity.

摘要翻译： 一种具有耦合到光纤的至少一对反射器的光纤激光器，所述至少一对反射器在所述至少一对反射器之间限定光腔，并被配置为反射光腔内的光。 至少一个光泵耦合到光纤并且被配置成将泵浦光提供到光学腔中，并且至少一个介质被定位在光腔内并被配置成从光腔中的泵浦光产生信号光。 此外，至少一个光栅位于光学腔内并被配置为将信号光耦合到光腔中。

公开(公告)号：EP3086420A3

公开(公告)日：2017-01-04

申请号：EP16162159.4

申请日：2016-03-24

申请人： OFS Fitel, LLC (a Delaware Limited Liability Company)

发明人： Nicholson, Jeffrey W. ,  Rosales-Garcia, Andrea ,  Ramakrishna, Supradeepa V.S.

IPC分类号： H01S3/067

CPC分类号： H01S3/06708 ,  H01S3/0078 ,  H01S3/067 ,  H01S3/06729 ,  H01S3/0675 ,  H01S3/094007 ,  H01S3/09408 ,  H01S3/10023 ,  H01S2301/02 ,  H01S2301/03

摘要： A technique is described for eliminating feedback light in a high-power optical device. An optical device (54) is provided that generates, along an optical pathway, an output light (68) at a desired signal wavelength, wherein the generation of the output light at the signal wavelength results in the generation of a feedback light (74) at an undesired feedback wavelength. A port (76) is provided at a selected location along the optical fiber pathway. The port is terminated with a length of a filter fiber (78), wherein the filter fiber has loss characteristics at the feedback wavelength that result in the elimination of feedback light from the optical fiber pathway through the port.

摘要翻译： 描述了一种用于消除高功率光学装置中的反馈光的技术。 提供了一种光学装置（54），其沿着光学路径产生期望信号波长的输出光（68），其中在信号波长处产生输出光导致反馈光（74）的产生， 在不期望的反馈波长。 端口（76）设置在沿光纤通路的选定位置。 端口以一定长度的滤波器光纤（78）端接，其中滤波器光纤在反馈波长处具有损耗特性，导致消除通过端口的光纤路径的反馈光。

公开(公告)号：EP2110902A3

公开(公告)日：2015-04-29

申请号：EP09004741.6

申请日：2009-03-31

申请人： OFS Fitel, LLC

发明人： Nicholson, Jeffrey W. ,  Westbrook, Paul

IPC分类号： H01S3/067

CPC分类号： H01S3/06708 ,  H01S3/0675 ,  H01S3/06791

摘要： A fiber laser having at least one pair of reflectors coupled to an optical fiber, the at least one pair of reflectors defining an optical cavity between the at least one pair of reflectors and being configured to reflect light within the optical cavity. At least one light pump is coupled to the optical fiber and configured to provide pump light into the optical cavity, and at least one medium is positioned within the optical cavity and configured to generate signal light from the pump light in the optical cavity. Further, at least one grating positioned within the optical cavity and configured to couple the signal light out of the optical cavity.

公开(公告)号：EP2196832B1

公开(公告)日：2017-02-22

申请号：EP09179052.7

申请日：2009-12-14

申请人： OFS Fitel, LLC

发明人： DiGiovanni, David J. ,  Nicholson, Jeffrey W. ,  Westbrook, Paul S. ,  Yan, Man F.

IPC分类号： G02B6/02 ,  C03C25/62

CPC分类号： G02B6/02247 ,  C03C25/62

公开(公告)号：EP2290764A3

公开(公告)日：2013-04-10

申请号：EP10174530.5

申请日：2010-08-30

申请人： OFS Fitel, LLC

发明人： Nicholson, Jeffrey W. ,  Ramachandran, Siddharth

IPC分类号： H01S3/067 ,  G02B6/14 ,  G02F1/365 ,  H04J14/02 ,  G02B6/02 ,  G02B6/036 ,  H01S3/00 ,  G02F1/35

CPC分类号： H01S3/0057 ,  G02B6/02023 ,  G02B6/14 ,  G02B6/29376 ,  G02F1/353 ,  G02F2001/3528 ,  H01S3/005 ,  H01S3/0092

摘要： An arrangement for providing pulse compression at the output of an optical continuum source - advantageously used in spectral slicing applications - includes a section of higher-order mode, HOM, fiber (20) configured to exhibit a predetermined dispersion in at least a portion of the predetermined wavelength range and an effective area greater than 40 µm 2 , the dispersion of the HOM fiber selected to compensate for the dispersion introduced by the optical continuum source (1012). The HOM fiber generates a compressed pulse output therefrom. An input mode converter (24) is used to convert the created continuum from the fundamental mode associated with the conventional continuum sources to the higher-order mode(s) supported by the HOM fiber used to perform pulse compression. A bandpass filter (22) is used to limit the bandwidth of the continuum signal to that associated with both the efficient conversion range of the mode converter and desired dispersion characteristic of the HOM fiber.

公开(公告)号：EP2290764A2

公开(公告)日：2011-03-02

申请号：EP10174530.5

申请日：2010-08-30

申请人： OFS Fitel, LLC

发明人： Nicholson, Jeffrey W. ,  Ramachandran, Siddharth

IPC分类号： H01S3/067 ,  G02B6/14 ,  G02F1/365 ,  H04J14/02 ,  G02B6/02 ,  G02B6/036

CPC分类号： H01S3/0057 ,  G02B6/02023 ,  G02B6/14 ,  G02B6/29376 ,  G02F1/353 ,  G02F2001/3528 ,  H01S3/005 ,  H01S3/0092

摘要： An arrangement for providing pulse compression at the output of an optical continuum source - advantageously used in spectral slicing applications - includes a section of higher-order mode, HOM, fiber (20) configured to exhibit a predetermined dispersion in at least a portion of the predetermined wavelength range and an effective area greater than 40 µm 2 , the dispersion of the HOM fiber selected to compensate for the dispersion introduced by the optical continuum source (1012). The HOM fiber generates a compressed pulse output therefrom. An input mode converter (24) is used to convert the created continuum from the fundamental mode associated with the conventional continuum sources to the higher-order mode(s) supported by the HOM fiber used to perform pulse compression. A bandpass filter (22) is used to limit the bandwidth of the continuum signal to that associated with both the efficient conversion range of the mode converter and desired dispersion characteristic of the HOM fiber.

摘要翻译： 用于在光连续体源的输出处提供脉冲压缩的装置 - 有利地用于光谱切片应用中 - 包括高阶模式HOM光纤（20）的一部分，其被配置为在至少部分 预定波长范围和大于40μm2的有效面积，选择的HOM光纤的色散以补偿由光学连续谱源引入的色散（1012）。 HOM光纤从其产生压缩脉冲输出。 输入模式转换器（24）用于将创建的连续体从与常规连续体源相关联的基本模式转换为由用于执行脉冲压缩的HOM光纤支持的高阶模式。 使用带通滤波器（22）将连续信号的带宽限制为与模式转换器的有效转换范围和HOM光纤的期望色散特性相关联的带宽。

公开(公告)号：EP2196832A1

公开(公告)日：2010-06-16

申请号：EP09179052.7

申请日：2009-12-14

申请人： OFS Fitel, LLC

发明人： DiGiovanni, David J. ,  Nicholson, Jeffrey W. ,  Westbrook, Paul S. ,  Yan, Man F.

IPC分类号： G02B6/02

CPC分类号： G02B6/02247 ,  C03C25/62

摘要： A method of creating optical fiber to exhibit predetermined length-dependent characteristics (e.g., chromatic dispersion, polarization mode dispersion, cutoff wavelength, birefringence) includes the steps of: characterizing the fiber's selected characteristic(s) as a function of length; and performing a "treatment" which modifies the refractive index over the given length to adjust the defined parameter to fall within a defined tolerance window. These steps may be repeated one or more times until the measure of the parameter falls with the defined tolerance limits. The treatment process may include, for example, a low energy actinic radiation exposure, anneal, mechanical strain, DC voltage, plasma application, etc. Indeed, if the treatment process is repeated, a different technique may be used to adjust the refractive index ("different" processes include, for example, modifying the strength/time of a UV exposure, temperatures for annealing, etc.).

公开(公告)号：EP2113798A1

公开(公告)日：2009-11-04

申请号：EP09004466.0

申请日：2009-03-27

申请人： OFS Fitel, LLC

发明人： Nicholson, Jeffrey W. ,  Yablon, Andrew D.

IPC分类号： G02B6/32 ,  H01S3/00 ,  H01S3/067 ,  G02B6/02 ,  G02B6/028

CPC分类号： H01S3/0057 ,  G02B6/02019 ,  G02B6/02266 ,  G02B6/32 ,  H01S3/06725 ,  H01S3/1635

摘要： An all-fiber optical pulse compression arrangement comprises a concatenated arrangement of a section of input fiber (e.g., a single mode fiber), a graded-index (GRIN) fiber lens and a section of pulse-compressing fiber (e.g., LMA fiber). The GRIN fiber lens is used to provide mode matching between the input fiber (supporting the propagation of chirped optical pulses) and the pulse-compressing fiber, with efficient pulse compression occurring along the length of the LMA fiber. The dispersion and length of the LMA fiber section are selected to provide the desired degree of pulse compression; for example, capable of reconstituting a femtosecond pulse as is used in supercontinuum generation systems.

摘要翻译： 全光纤脉冲压缩装置包括输入光纤（例如，单模光纤），渐变折射率（GRIN）光纤透镜和脉冲压缩光纤部分（例如，LMA光纤）的级联布置， 。 GRIN光纤透镜用于提供输入光纤（支持啁啾光脉冲的传播）和脉冲压缩光纤之间的模式匹配，并沿着LMA光纤的长度发生有效的脉冲压缩。 选择LMA纤维部分的分散和长度以提供期望的脉冲压缩程度; 例如，能够重构如在超连续谱生成系统中使用的飞秒脉冲。

公开(公告)号：EP2290764B1

公开(公告)日：2014-10-08

申请号：EP10174530.5

申请日：2010-08-30

申请人： OFS Fitel, LLC

发明人： Nicholson, Jeffrey W. ,  Ramachandran, Siddharth

IPC分类号： H01S3/067 ,  G02B6/14 ,  G02F1/365 ,  H04J14/02 ,  G02B6/02 ,  G02B6/036 ,  H01S3/00 ,  G02F1/35

CPC分类号： H01S3/0057 ,  G02B6/02023 ,  G02B6/14 ,  G02B6/29376 ,  G02F1/353 ,  G02F2001/3528 ,  H01S3/005 ,  H01S3/0092

公开(公告)号：EP2161797A3

公开(公告)日：2012-02-08

申请号：EP09011232.7

申请日：2009-09-01

申请人： OFS Fitel, LLC

发明人： Nicholson, Jeffrey W.

IPC分类号： H01S3/067 ,  H01S3/11

摘要： A polarization-maintaining figure eight (PMFE) fiber laser is configured to generate ultrashort (femtosecond) output pulses by intentionally inserting asymmetry (in the form of a phase bias) into the bi-directional loop of the fiber laser. The introduction of asymmetry (via an asymmetric coupler, splice, attenuator, fiber bend, multiple amplifying sections, or the like) allows for an accumulation of phase difference within the bi-directional loop sufficient to create modelocking and generate ultrashort output pulses.