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41. 发明授权

US09513423B2 Methods and apparatus for power-equalized optical frequency comb generation 有权
公开(公告)号：US09513423B2
公开(公告)日：2016-12-06
申请号：US13886821
申请日：2013-05-03
申请人： RAM PHOTONICS, LLC
发明人： Ping Piu Kuo , Yauheni Mysilvets
IPC分类号： G02B6/00 , G02F1/35 , G02F1/383 , G02F1/39 , G02B6/02
CPC分类号： G02B6/00 , G02B6/02247 , G02F1/353 , G02F1/383 , G02F1/39 , G02F2201/16 , G02F2203/26 , G02F2203/56
摘要： An optical device for generating a frequency comb includes an optical source and a first waveguide comprising a nonlinear optical medium operable to mix at least two input optical waves to generate a plurality of first optical waves. The optical device also includes a second waveguide concatenated to the first waveguide and characterized by a first dispersion characteristics and operable to compress the waveforms of the plurality of first optical waves and to reduce a frequency chirp introduced by the first waveguide. The optical device additionally includes a third waveguide concatenated to the second waveguide. The third waveguide comprises a nonlinear optical medium and is operable to mix the plurality of first optical waves to generate a plurality of second optical waves and to increase a total number of second optical waves with respect to a total number of first optical waves.

42. 发明申请

US20150086161A1 OPTICAL FIBER LINK WITH PRIMARY AND COMPENSATING OPTICAL FIBERS 审中-公开
标题翻译：光纤光纤连接与主要和补偿光纤
公开(公告)号：US20150086161A1
公开(公告)日：2015-03-26
申请号：US14488558
申请日：2014-09-17
申请人： CORNING INCORPORATED
发明人： Scott Robertson Bickham , Xin Chen , Ming-Jun Li , Dale Robert Powers
IPC分类号： G02B6/42 , G02B6/028
CPC分类号： G02B6/0288 , G02B6/02247 , G02B6/268
摘要： An optical fiber link that utilizes concatenated primary and compensating multimode optical fibers is disclosed. The primary optical fiber has a first relative refractive index profile with a first alpha value α40 of about 2.1 that provides for a minimum amount of intermodal dispersion of guided modes at a peak wavelength λP40 in the range from 840 nm to 860 nm, and has a first bandwidth BW40 of 2 GHz·km or greater. The compensating optical fiber has a second relative refractive index profile with a second alpha value α60, and wherein −0.9≦(α60−α40)≦−0.1, and a peak wavelength λP60 greater than 880 nm. The optical fiber link has improved bandwidth and data rates for first and second optical signals within first and second wavelength ranges, respectively.
摘要翻译：公开了一种利用连接的初级和补偿多模光纤的光纤链路。主光纤具有第一相对折射率分布，其第一α值α40为约2.1，其提供在840nm至860nm范围内的峰值波长λP40处的导模的最小量的多式联运色散，并且具有 2GHz·km以上的第一带宽BW40。补偿光纤具有第二相对折射率分布，其具有第二α值α60，并且其中-0.9≤n1E（α60-α40）＆lt; 1E-0.1，峰值波长λP60大于880nm。光纤链路分别改善了在第一和第二波长范围内的第一和第二光信号的带宽和数据速率。

43. 发明授权

US08447155B1 Methods and apparatus for power-equalized optical frequency comb generation 有权
标题翻译：用于功率均衡的光学频率梳生成的方法和装置
公开(公告)号：US08447155B1
公开(公告)日：2013-05-21
申请号：US13725869
申请日：2012-12-21
申请人： Ram Photonics, LLC
发明人： Ping Piu Kuo , Yauheni Myslivets
IPC分类号： G02B6/00 , H04B10/04
CPC分类号： G02B6/00 , G02B6/02247 , G02F1/353 , G02F1/383 , G02F1/39 , G02F2201/16 , G02F2203/26 , G02F2203/56
摘要： An optical device for generating a frequency comb includes an optical source and a first waveguide comprising a nonlinear optical medium operable to mix at least two input optical waves to generate a plurality of first optical waves. The optical device also includes a second waveguide concatenated to the first waveguide and characterized by a first dispersion characteristics and operable to compress the waveforms of the plurality of first optical waves and to reduce a frequency chirp introduced by the first waveguide. The optical device additionally includes a third waveguide concatenated to the second waveguide. The third waveguide comprises a nonlinear optical medium and is operable to mix the plurality of first optical waves to generate a plurality of second optical waves and to increase a total number of second optical waves with respect to a total number of first optical waves.
摘要翻译：用于产生频率梳的光学装置包括光源和包括可操作以混合至少两个输入光波以产生多个第一光波的非线性光学介质的第一波导。光学装置还包括连接到第一波导的第二波导，其特征在于第一色散特性并且可操作以压缩多个第一光波的波形并且减少由第一波导引入的频率啁啾。光学装置还包括连接到第二波导的第三波导。第三波导包括非线性光学介质，并且可操作以混合多个第一光波以产生多个第二光波，并且相对于第一光波的总数增加第二光波的总数。

44. 发明申请

US20100148383A1 Method of controlling longitudinal properties of optical fiber 有权
标题翻译：控制光纤纵向特性的方法
公开(公告)号：US20100148383A1
公开(公告)日：2010-06-17
申请号：US12316740
申请日：2008-12-15
申请人： David J. DiGiovanni , Jeffrey W. Nicholson , Paul S. Westbrook , Man F. Yan
发明人： David J. DiGiovanni , Jeffrey W. Nicholson , Paul S. Westbrook , Man F. Yan
IPC分类号： B29D11/00 , G02B1/12
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.).
摘要翻译：产生光纤以呈现预定长度相关特性（例如，色散，偏振模色散，截止波长，双折射）的方法包括以下步骤：将光纤的选定特性表征为长度的函数; 并且执行修改在给定长度上的折射率的“处理”，以将限定的参数调整到落入限定的公差窗内。这些步骤可以重复一次或多次，直到参数的测量值与定义的公差极限一致。处理过程可以包括例如低能量光化辐射暴露，退火，机械应变，DC电压，等离子体施加等。实际上，如果重复处理过程，则可以使用不同的技术来调节折射率（ “不同”方法包括例如改变UV暴露的强度/时间，退火温度等）。

45. 发明授权

US07379646B2 Optical fiber product, method of fabricating optical cable, and characteristic evaluation method 失效
标题翻译：光纤产品，光缆制造方法及特性评估方法
公开(公告)号：US07379646B2
公开(公告)日：2008-05-27
申请号：US10961222
申请日：2004-10-12
申请人： Yasushi Koyano , Hiroyoshi Yamamoto , Yasuhiro Naganuma
发明人： Yasushi Koyano , Hiroyoshi Yamamoto , Yasuhiro Naganuma
IPC分类号： G02B6/00
CPC分类号： G02B6/02247 , G02B6/4479
摘要： The present invention relates to an optical fiber product suitable for fabricating an optical cable that requires a complicated length adjustment. The optical fiber product includes an effective use portion used as the optical cable, surplus portions connected to both ends of the effective use portion, and a distinguishing structure clearly indicating boundary portions between the effective use portion and the surplus portions. With the above structure, the surplus portions that become finally unnecessary are surely cut off in a fabrication step of the optical cable, thus enabling collect use of only effective use portion as the optical cable.
摘要翻译：本发明涉及一种适用于制造需要复杂长度调节的光缆的光纤产品。光纤产品包括用作光缆的有效使用部分，连接到有效使用部分的两端的剩余部分，以及清楚地指示有效使用部分和剩余部分之间的边界部分的区别结构。利用上述结构，在光缆的制造步骤中可靠地切断最终不必要的剩余部分，从而能够仅使用有效使用部分作为光缆。

46. 发明授权

US06907171B2 Optical fiber composite and optical fiber cable and production method thereof 失效
标题翻译：光纤复合光纤电缆及其制造方法
公开(公告)号：US06907171B2
公开(公告)日：2005-06-14
申请号：US10893968
申请日：2004-07-20
申请人： Masayuki Nishimura , Shigeru Tanaka
发明人： Masayuki Nishimura , Shigeru Tanaka
IPC分类号： G02B6/02 , G02B6/34 , H04B10/2507 , H04B10/2525 , G02B6/16
CPC分类号： G02B6/02247 , G02B6/02004 , G02B6/02261 , G02B6/02266 , G02B6/29377 , H04B10/25253
摘要： An optical fiber composite that can easily have a desired mean transmission property as a whole even after a length of optical fiber is cut off from one end or both ends, a cable comprising the composites, and methods for producing the composite and cable. An optical fiber composite 10 is produced by splicing a first optical fiber 11, a second optical fiber 12, and a third optical fiber 13 in this order. The first optical fiber 11 and the third optical fiber 13 each have a first chromatic dispersion, D1, at the wavelength of a signal-carrying lightwave. The second optical fiber 12 has a second chromatic dispersion, D2, at the wavelength of the signal-carrying lightwave. The third optical fiber has a length, L3, shorter than the length, L1, of the first optical fiber. It is desirable that the ratio L3/L1 be at most 0.1.
摘要翻译：即使从一端或两端切断长度的光纤，也可以容易地具有期望的平均透射特性的光纤复合体，包含该复合体的电缆以及复合电缆的制造方法。通过按顺序拼接第一光纤11，第二光纤12和第三光纤13来制造光纤复合体10。第一光纤11和第三光纤13在信号携带光波长的波长处都具有第一色散D 1 1。第二光纤12在信号携带光波长的波长处具有第二色散D 2 2。第三光纤具有比第一光纤的长度L L1短的长度L 3 3。理想的是L 3 / L 1比为0.1以下。

47. 发明授权

US06760525B2 Controlled dispersion optical fiber 失效
标题翻译：受控分散光纤
公开(公告)号：US06760525B2
公开(公告)日：2004-07-06
申请号：US10224242
申请日：2002-08-19
申请人： George E. Berkey , Venkata A. Bhagavatula , Lutfur Rahman , Vaidyanathan Srikant
发明人： George E. Berkey , Venkata A. Bhagavatula , Lutfur Rahman , Vaidyanathan Srikant
IPC分类号： G02B600
CPC分类号： G02B6/03677 , C03B37/01211 , C03B37/01413 , C03B37/01807 , C03B2203/18 , C03B2203/36 , G02B6/02009 , G02B6/02242 , G02B6/02247 , G02B6/02271 , G02B6/0228 , G02B6/03611 , G02B6/03644
摘要： Disclosed is a dispersion controlled optical waveguide fiber, and telecommunication systems using such a waveguide fiber, in which the end to end total dispersion and total dispersion slope is controlled by varying the refractive index profile along the fiber length. The waveguide fiber includes length portions each of which is characterized by total dispersion having a magnitude and sign and total dispersion slope having a magnitude and sign. The magnitudes and signs of total dispersion and total dispersion slope of respective length portions are chosen to provide for the optical waveguide fiber a desired end to end total dispersion and total dispersion slope. An advantage is achieved in the present invention by designing the refractive index profiles of the length portions to have total dispersion and total dispersion slope of opposite sign.
摘要翻译：公开了一种色散控制光波导光纤和使用这种波导光纤的电信系统，其中通过沿光纤长度改变折射率分布来控制端到端的总色散和总色散斜率。波导纤维包括长度部分，每个部分的特征在于具有幅度和符号的总色散以及具有幅度和符号的总色散斜率。选择各个长度部分的总色散和总色散斜率的大小和符号，以使光波导光纤具有期望的端到端总色散和总色散斜率。通过设计长度部分的折射率分布以具有相反符号的总色散和总色散斜率，在本发明中实现了一个优点。

48. 发明申请

US20030215201A1 Optical fiber and optical transmission path 审中-公开
标题翻译：光纤和光传输路径
公开(公告)号：US20030215201A1
公开(公告)日：2003-11-20
申请号：US10437052
申请日：2003-05-14
申请人： FUJIKURA LTD.
发明人： Shoji Tanigawa , Shoichiro Matsuo , Kuniharu Himeno , Koichi Harada
IPC分类号： G02B006/16 , G02B006/22
CPC分类号： G02B6/03694 , G02B6/02247 , G02B6/02285 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/03666 , G02B6/29377
摘要： Under condition that a non-circularity ratio is 5% or lower and a thermal expansion coefficient of a glass which forms the core is null1 and a thermal expansion of a glass which forms the cladding is null2, the difference of coefficients is controlled such that a formula null2.5null10null7/null C.nullnull1nullnull2null1.0null10null7/null C. is satisfied so as to maintain a polarization mode dispersion to be 0.03 ps/km0.5 or lower. The difference of coefficients is further controlled such that a formula null1.5null10null7/null C.nullnull1nullnull2null0/null C. is satisfied so as to maintain a polarization mode dispersion to be 0.015 ps/km0.5 or lower. By doing this, birefringence is reduced by adjusting the thermal expansion coefficient in a core and a cladding; thus providing an optical fiber, and an optical transmission path using the optical fiber, having preferable PMD for high speed transmission.
摘要翻译：在非圆度比为5％以下，形成芯的玻璃的热膨胀系数为α1，形成包层的玻璃的热膨胀为α2的条件下，控制系数差，使得满足公式-2.5×10 -7 /℃。<=α1-α2<= 1.0×10 -7 /℃，以便将偏振模色散维持在0.03ps / km <0.5>或更低。进一步控制系数的差异，使得满足公式-1.5×10 -7 /℃<=α1-α2<= 0 /℃，以便将偏振模色散维持为0.015ps / km <0.5>以下。通过这样做，通过调节芯和包层中的热膨胀系数来减少双折射; 从而提供一种光纤，以及使用该光纤的光传输路径，具有优选用于高速传输的PMD。

49. 发明授权

US06421490B1 Low slope dispersion managed waveguide 有权
标题翻译：低斜率色散管理波导
公开(公告)号：US06421490B1
公开(公告)日：2002-07-16
申请号：US09239509
申请日：1999-01-28
申请人： Yanming Liu
发明人： Yanming Liu
IPC分类号： G02B602
CPC分类号： G02B6/02238 , G02B6/02247 , G02B6/02261 , G02B6/02285 , G02B6/0281 , G02B6/03644 , G02B6/03666 , G02B6/03688
摘要： Disclosed is a singe mode optical waveguide fiber having alternating segments of positive and negative dispersion and dispersion slope. The relative indexes, the refractive index profiles and the radii of the segments are chosen to provide low total dispersion and dispersion slope. Preferred waveguides in accordance with the invention exhibit a dispersion over the range of 1520 to 1625 nm which at all time has a magnitude which is less than 2, and more preferably less that 1 ps/nm-km. The total dispersion of the waveguide fiber is in the range of about −2.0 to +2.0 ps/nm-km at 1550 nm. The waveguide also features a low polarization mode dispersion.
摘要翻译：公开了具有正，负色散和色散斜率的交替段的单模光纤。选择相对指数，折射率分布和段的半径以提供低的总色散和色散斜率。根据本发明的优选波导在1520至1625nm的范围内表现出分散，其总是具有小于2的量值，更优选小于1ps / nm-km的幅度。波导光纤的总色散在1550nm处在约-2.0至+ 2.0ps / nm-km的范围内。波导还具有低偏振模色散。

50. 发明申请

US20010046358A1 Optical fiber, method of making the same, and optical transmission system including the same 失效
标题翻译：光纤，其制造方法以及包括该光纤的光传输系统
公开(公告)号：US20010046358A1
公开(公告)日：2001-11-29
申请号：US09899020
申请日：2001-07-06
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Eisuke Sasaoka , Masashi Onishi , Katsuya Nagayama , Kaoru Okuno , Kazuya Kuwahara
IPC分类号： G02B006/16
CPC分类号： G02B6/03644 , C03B37/0253 , C03B37/027 , C03B37/02745 , C03B37/032 , C03B2203/19 , C03B2203/36 , C03B2205/06 , G02B6/02247 , G02B6/02285 , G02B6/278
摘要： The present invention provides an optical fiber and the like comprising a structure making it possible to realize optical communications with a higher speed and a larger capacity as compared with conventional optical transmission systems. The optical fiber according to the present invention is an optical fiber in which at least one first portion having a positive chromatic dispersion at a predetermined wavelength within a wavelength band in use and at least one second portion having a negative chromatic dispersion at the predetermined wavelength are arranged adjacent each other along the longitudinal direction thereof. In particular, the optical fiber comprises a polarization coupling structure for inducing coupling between polarization modes of propagating light. This polarization coupling structure randomly causes coupling between polarization modes of the propagating light, whereby polarization mode dispersion decreases at the predetermined wavelength. As a consequence, transmission characteristics are effectively restrained from deteriorating due to polarization mode dispersion. Specifically, the polarization coupling structure is a twist applied to the optical fiber.
摘要翻译：本发明提供一种光纤等，其包括与常规光传输系统相比可以实现具有更高速度和更大容量的光通信的结构。根据本发明的光纤是一种光纤，其中在使用中的波长带内的预定波长具有正色散的至少一个第一部分和在预定波长处具有负色散的至少一个第二部分是沿着其纵向彼此相邻布置。特别地，光纤包括用于在传播光的偏振模式之间引起耦合的偏振耦合结构。该偏振耦合结构随机引起传播光的偏振模式之间的耦合，从而偏振模色散在预定波长处降低。结果，由于偏振模式色散，传输特性被有效地抑制为劣化。具体地，偏振耦合结构是施加到光纤上的扭转。

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