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11. 发明公开

EP2376958A4 FIBER OPTIC DIFFRACTION GRATING 审中-公开
标题翻译：光纤衍射光栅
公开(公告)号：EP2376958A4
公开(公告)日：2012-07-04
申请号：EP09833867
申请日：2009-12-18
申请人： CHIRAL PHOTONICS INC
发明人： KOPP VICTOR II ICH , CHURIKOV VICTOR , KOPP VICTOR LL ICH
IPC分类号： G02B6/036 , G02B6/02
CPC分类号： G02B6/021 , G02B6/02357 , G02B6/02361 , G02B6/02376 , G02B2006/0209
摘要： The present invention is directed to an optical fiber grating having a core, that is capable of controlling the light signal transmission therethrough by causing at least one of: at least one spectral peak, and/or at least one spectral dip in its core light transmission spectrum, corresponding to at least one predetermined wavelength. The inventive optical fiber diffraction grating comprises at least one longitudinally positioned structural element of a predetermined geometric profile and that is configured for diffracting a portion of the transmitted light signal at at least one predefined wavelength thereof, from at least one core mode into at least one of: at least one cladding mode and/or at least one radiating mode. Various embodiments of a number of novel techniques for fabrication of the inventive optical fiber diffraction grating are provided, inclusive of a novel technique for fabricating the inventive grating from a single material. Advantageously, such novel fabrication techniques rely on configuration of a desired geometric profile for the at least one structural element portion of the novel grating, each profile comprising a number of readily configurable parameters that can be selected and/or adjusted during fabrication, to produce a variety of novel fiber diffraction gratings, each having a corresponding specific desirable core transmission spectrum having at least one of: least one spectral peak, and/or at least one spectral dip therein, corresponding to at least one specific desired wavelength, dependent on the configuration of the applicable geometric profile.

12. 发明公开

EP2313802A4 OPTICAL CHIRAL FIBER ISOLATOR AND METHOD OF FABRICATION THEREOF 审中-公开
标题翻译：光学手征纤维隔离器及其制造方法
公开(公告)号：EP2313802A4
公开(公告)日：2011-08-03
申请号：EP09771192
申请日：2009-06-26
申请人： CHIRAL PHOTONICS INC
发明人： KOPP VICTOR II ICH , ZHANG GUAOYIN
IPC分类号： G02B6/27 , G02F1/09
CPC分类号： G02F1/0955 , H01F7/0273
摘要： The present invention provides an optical in-fiber chiral fiber isolator, capable of transmitting a signal of a predetermined optical polarization in a forward direction therethrough, while rejecting all signals traveling in a backward direction therethrough, and a method of fabrication thereof. In one exemplary embodiment, the inventive optical chiral fiber isolator includes a chiral magneto-optical fiber having a helical pitch profile, a birefringence profile, and an effective Verdet constant profile, at least a portion of which is exposed to a magnetic field of a predetermined magnetic field profile (generated by a proximal magnetic field source), where the magnetic field profile, the chiral pitch profile, the birefringence profile, and the effective Verdet constant profile are selected and configured such that the inventive isolator is capable of transmitting a signal of a predetermined optical polarization in a direction from its input end toward its output end, and to reject all signals in a direction from its output end to its input end.

13. 发明公开

EP2344914A2 DUAL TWIST SINGLE HELIX OPTICAL FIBER GRATING 审中-公开
标题翻译：光学双螺旋扭曲SIMPLE纤维栅
公开(公告)号：EP2344914A2
公开(公告)日：2011-07-20
申请号：EP09798642.6
申请日：2009-07-14
申请人： Chiral Photonics, Inc.
发明人： KOPP, Victor, Il'ich , SINGER, Jonathan , DRAPER, Christopher , CHURIKOV, Victor, M. , NEUGROSCHL, Daniel
IPC分类号： G02B6/02
CPC分类号： G02B6/02071
摘要： A single helix chiral fiber grating of a predetermined grating strength is provided that is operable to control light transmission in a predetermined wavelength range. The novel fiber grating comprises a first optical fiber with a first interface portion at a first end, a second interface portion at a second end, and a middle portion therebetween. The first optica! fiber is configured with at least one fiber core, surrounded by a corresponding at least one cladding, with a first longitudinal section disposed within the first interface portion, a second longitudinal section disposed within the second interface portion, and also includes a longitudinal helical section, disposed therebetween within the middle portion, that comprises a longitudinal helix structure of a single predetermined handedness, having a predetermined pitch profile, and having a predetermined helix diameter profile selected and configured to produce the predetermined grating strength. The helical section of the novel fiber grating is preferably produced by placing the first optical fiber, proximal to and parallel with a second fiber (or equivalent elongated member), and longitudinally twisting them together to form a double helix structure. Advantageously, the diameter of the second fiber (or a diameter profile thereof) may be selected to achieve the predetermined helix diameter profile in the helical section of the first fiber. The second fiber may be left proximal to the first fiber after fabrication or removed.

14. 发明授权

EP1379897B1 CHIRAL FIBER BRAGG GRATING 有权
标题翻译：手性光纤光栅
公开(公告)号：EP1379897B1
公开(公告)日：2008-07-02
申请号：EP02723457.4
申请日：2002-03-14
申请人： Chiral Photonics, Inc.
发明人： KOPP, Victor, Il'ich , GENACK, Azriel, Zelig
IPC分类号： G02B6/02
CPC分类号： G02B6/02085 , G02B6/021 , G02B6/024 , G02B6/105 , G02B2006/0209
摘要： A fiber Bragg grating comprises a chiral fiber (10) mimicking a cholesteric liquid crystal structure, having a first and a second helical structures (22,24) disposed along its central longitudin al axis, where the second helical structure (24) is identical in orientation to the first helical structure (22) but is shifted by one half of the structure's pitch forward. In another embodiment of the invention, only a single helical structure is disposed along the fiber to create an optically resonant chiral fiber.

15. 发明授权

EP1070235B1 CHIRAL TWIST LASER AND FILTER APPARATUS AND METHOD 有权
标题翻译：与手性扭曲和过滤设备和方法激光器结构
公开(公告)号：EP1070235B1
公开(公告)日：2007-05-16
申请号：EP00908494.8
申请日：2000-02-04
申请人： Chiral Photonics, Inc.
发明人： KOPP, Victor, Il'ich , GENACK, Azriel, Zelig
IPC分类号： G01J3/28 , G02B1/08 , G02B5/20 , G02B5/30 , G02F1/01 , H01S3/10 , H01S3/14
CPC分类号： B82Y20/00 , G02B5/3016 , G02B6/105 , G02B6/1225 , H01S3/08059 , H01S3/094034 , H01S3/10061 , H01S3/105 , H01S3/1686 , H01S3/213
摘要： A defect causing a localized state is induced in a chiral structure (12) composed of multiple chiral elements (20, 22) by twisting one element of the chiral structure with respect to the other elements along a common longitudinal axis such that directors of the element molecular layers that are in contact with one another at contact area (26) are disposed at a particular 'twist' angle therebetween, the twist angle being greater than a shift angle between directors of consecutive layers. The chiral twist structure may be utilized in a variety of applications such as filters, lasers and detectors. The defect caused by the twist may be made tunable by providing a tuning device for rotating one or more of the chiral elements with respect to one another to vary the twist angle and thus vary the position of the induced defect within a photonic stop band. Tunable defects may be advantageously utilized to construct tunable wavelength chiral filters, detectors and lasers.

16. 发明公开

EP4288819A1 MULTICHANNEL OPTICAL COUPLER ARRAY 审中-实审
公开(公告)号：EP4288819A1
公开(公告)日：2023-12-13
申请号：EP22750542.7
申请日：2022-02-07
申请人： Chiral Photonics, Inc.
发明人： KOPP, Victor, Il'ich , PARK, Jongchul , NEUGROSCHL, Daniel
IPC分类号： G02B6/26 , G02B6/02 , G02B6/28 , G02B6/30

17. 发明公开

EP3535612A1 MULTICHANNEL OPTICAL COUPLER ARRAY 有权
公开(公告)号：EP3535612A1
公开(公告)日：2019-09-11
申请号：EP17866471.0
申请日：2017-11-01
申请人： Chiral Photonics, Inc.
发明人： KOPP, Victor Il'ich , NEUGROSCHL, Daniel , SINGER, Jonathan
IPC分类号： G02B6/30 , G02B6/024 , G02B6/02

18. 发明授权

EP1466198B1 CHIRAL FIBER SENSOR APPARATUS AND METHOD 有权
标题翻译：手征光纤传感器的装置和方法
公开(公告)号：EP1466198B1
公开(公告)日：2011-03-09
申请号：EP02804753.8
申请日：2002-12-06
申请人： Chiral Photonics, Inc.
发明人： KOPP, Victor, Il'ich , GENACK, Azriel, Zelig
IPC分类号： G02B6/00 , G01D5/353
CPC分类号： G01L3/00 , G01D5/35345 , G01D5/3538 , G01K11/165 , G01K11/32 , G02B6/02085 , G02B6/0239 , G02B2006/0209
摘要： A chiral fiber sensor (10) implemented in a chiral fiber (12) is provided that mimics advantageous optical properties of a cholesteric liquid crystal structure. In a passive sensor embodiment (10), the chiral fiber sensor of the present invention includes a chiral fiber element (12) configured to shift its reflection band in response to a change in a particular external condition (such as temperature, pressure and axial twist). The chiral fiber element (12) is subjected to a broadband emission (20) while monitoring its reflection or the transmission spectrum. Changes in the monitored spectrum indicate changes in the particular external condition. In an active sensor embodiment (100), the chiral fiber element (102) is configured as an optically pumped chiral laser (108) having a lasing wavelength that shifts in reponse to a change in a particular external condition (such as temperature, pressure and axial twist).

19. 发明公开

EP1803005A2 CHIRAL IN-FIBER POLARIZER APPARATUS AND METHOD 有权
标题翻译：手性纤维偏振器装置和方法
公开(公告)号：EP1803005A2
公开(公告)日：2007-07-04
申请号：EP04796253.5
申请日：2004-10-25
申请人： Chiral Photonics, Inc.
发明人： KOPP, Victor ll'ich , TCHOURIKOV, Victor
IPC分类号： G02B6/00 , G02B6/34 , H04B10/00
CPC分类号： G02B6/02085 , G02B6/02109 , G02B6/105 , G02B2006/0209
摘要： A chiral in-fiber polarizer (10) implemented in a chiral fiber structure (12) having a core (14) and a cladding (16) surrounding the core (14), is provided. The chiral polarizer includes an entry end (18) for receiving incident light (22) and an exit end (20) for outputting polarized light, as well as a pitch variation along its length between the entry and exit ends (18 and 20) in accordance with a predetermined desirable pitch profile, wherein in one embodiment of the inventive polarizer, the inverse value of the chiral structure's pitch at the exit end (20) is less than at the entry end (18), and preferably substantially equal to zero. In another embodiment of the inventive chiral polarizer (10) , the pitch profile is selected and configured such that the inverse value of the chiral structure's pitch at the entry end (18) of the chiral structure (12) is also zero. This arrangement enables significant reduction of insertion loss of the incident light (22) entering the entry end (18) of the inventive polarizer.
摘要翻译：提供了一种手性纤维内偏振器（10），其实现在具有芯（14）和围绕芯（14）的包层（16）的手性纤维结构（12）中。手性偏振器包括用于接收入射光（22）的入口端（18）和用于输出偏振光的出口端（20），以及沿入口端（18和20）之间沿其长度的节距变化其中在本发明的偏振器的一个实施例中，出口端（20）处的手性结构的节距的倒数值小于入口端（18）处的倒数值，并且优选地基本上等于零。在本发明的手性偏振器（10）的另一个实施例中，选择和配置螺距轮廓使得手性结构（12）的入口端（18）处的手性结构的螺距的倒数值也为零。这种布置能够显着降低进入本发明偏振器的入口端（18）的入射光（22）的插入损耗。

20. 发明公开

EP1702227A2 OPTICAL FIBER COUPLER WITH LOW LOSS AND HIGH COUPLING COEFFICIENT AND METHOD OF FABRICATION THEREOF 审中-公开
标题翻译：具有产生损耗低系数高KOPPEL和工艺光纤耦合器
公开(公告)号：EP1702227A2
公开(公告)日：2006-09-20
申请号：EP04814827.4
申请日：2004-12-18
申请人： Chiral Photonics, Inc.
发明人： KOPP, Victor, Il'ich , TCHOURIKOV, Victor , SINGER, Jonathan , NEUGROSCHL, Daniel
IPC分类号： G02B6/26 , G02B6/42 , G02B6/36
CPC分类号： G02B6/024 , C03B37/01245 , G02B6/2843
摘要： An optical fiber coupler capable of providing a low loss, high coupling coefficient interface between conventional optical fibers and optical waveguide devices is provided. The novel coupler, which may be polarization maintaining, if a polarization maintaining preform is used in its fabrication. includes a core, a cladding, a first end for interfacing with an optical fiber and a second end for interfacing with an optical waveguide device. The sizes of the core and cladding are gradually reduced from the first end to the second end in accordance with a predetermined reduction profile. Various parameters, such as refractive indices and sizes of the core and cladding and the reduction profile are selected to produce a low numerical aperture at the first end and a high numerical aperture at the second end, while advantageously minimizing insertion loss and maximizing the coupling coefficient at each end. In another embodiment, the novel coupler includes a secondary cladding which is also reduced between the first and second ends to improve the strength of the coupler structure at the second end. In yet another embodiment, one or two novel couplers are formed along with a chiral fiber based optical waveguide device as a single continuous element. The optical fiber preform used to fabricate the novel optical fiber coupler can be etched prior to fabrication to facilitate application of the reduction profile.

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