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公开(公告)号：US6005999A
公开(公告)日：1999-12-21
申请号：US975843
申请日：1997-11-21
CPC分类号： G02B6/03644 , G02B6/02119 , G02B6/03633
摘要： An optical fiber filter including a length of single mode fiber having an operating wavelength .lambda..sub.0. Fiber designs may include a depressed inner clad fiber, a photosensitive matched inner clad fiber or a photosensitive depressed inner clad fiber. The length of fiber includes a core, an inner cladding, an outer cladding and an azimuthally asymmetric grating. The core allows the existence of a LP.sub.01 core mode having an effective index of n.sub.eff,01 and the cladding allows the existence of a LP.sub.1m cladding mode, m.gtoreq.1. The core has an index of refraction n.sub.co and a radius A. The inner cladding has an index of refraction n.sub.ic, an inner radius A, an outer radius AB, a thickness W, where W=AB-A, and a refraction difference .DELTA.n-, where .DELTA.n- is the difference between n.sub.ic and n.sub.oc and n.sub.co >n.sub.oc >n.sub.ic. The inner cladding may be photosensitive to a radius R.sub.grat and have a fractional photosensitivity .gamma.. The outer cladding generally laterally surrounds the inner cladding and has an inner radius AB, an outer radius B, and an index of refraction n.sub.oc, where .DELTA.n.sub.+ is the difference between n.sub.co and n.sub.oc. The grating has an effective tilt angle .theta. and a period (.LAMBDA.), where .LAMBDA..ltoreq.(.lambda..sub.0 cos .theta.)/(2n.sub.eff,01), the maximum relative coupling coefficient for the cladding mode max(RCC.sub.1m) being greater or equal to 0.2 and the ratio of peak reflectivities for the cladding mode and the core mode RR being greater or equal to 1.
摘要翻译： 包括具有工作波长λ0的单模光纤的长度的光纤滤波器。光纤设计可以包括凹陷内包层光纤，光敏匹配的内包层光纤或光敏凹陷的内包层光纤。 纤维的长度包括芯，内包层，外包层和方位不对称光栅。 核心允许存在具有有效指数为neff，01的LP01核心模式，并且包层允许存在LP1m包层模式，m> / = 1。 芯具有折射率nco和半径A.内包层具有折射率nic，内半径A，外半径AB，厚度W，其中W = AB-A，折射差DELTA n - 其中，DELTA n-是nic和noc之间的差异，nco> noc> nic。 内包层可以对半径Rgrat感光，并具有分数光敏度γ。 外包层通常侧向包围内包层，并且具有内半径AB，外半径B和折射率noc，其中，ΔTAn +是nco和noc之间的差。 光栅具有有效倾斜角θ和周期（LAMBDA），其中LAMBDA
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2.发明授权Depressed cladding fiber design for reducing coupling to cladding modes in fiber gratings 失效抑制包层光纤设计，用于减少耦合到光纤光栅中的包层模式
公开(公告)号：US5852690A
公开(公告)日：1998-12-22
申请号：US884889
申请日：1997-06-30
CPC分类号： G02B6/03644 , G02B6/02009 , G02B6/02023 , G02B6/021 , G02B6/02061 , G02B6/02104
摘要： A waveguide, such as an optical fiber waveguide for guiding light waves, which can provide a strongly reflective grating (e.g., a Bragg grating) at a specified wavelength while maintaining very low losses at adjacent wavelengths. The waveguide includes a core, an inner cladding laterally surrounding the core, an outer cladding laterally surrounding the inner cladding, and a grating pattern. The core has a refractive index n.sub.co and a first transverse dimension 2A. The inner cladding has a width W and a refractive index n.sub.ic. The outer cladding has a refractive index n.sub.oc. The relation between the refractive indexes, n.sub.co >n.sub.oc >n.sub.ic and 0.5
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公开(公告)号：US6058231A
公开(公告)日：2000-05-02
申请号：US23626
申请日：1998-02-13
CPC分类号： G02B6/02114
摘要： A single-mode optical fiber that includes: (a) a core that includes silica and is characterized by a first refractivity that changes upon exposure to actinic radiation of a predetermined wavelength; and (b) a cladding surrounding the core that also includes silica and is characterized by a second refractivity different from the first refractivity that changes upon exposure to actinic radiation of a predetermined wavelength. At least one of the core and the cladding further includes boron, the relative amounts of boron in the core and cladding being selected such that the first refractivity and the second refractivity change by substantially the same amount upon exposure to actinic radiation of a predetermined wavelength.
摘要翻译： 一种单模光纤，其包括：（a）包含二氧化硅的芯，其特征在于当暴露于预定波长的光化辐射时变化的第一折射率; 和（b）围绕芯的包层，其还包括二氧化硅，其特征在于与暴露于预定波长的光化辐射的第一折射率不同的第二折射率。 芯和包层中的至少一个还包括硼，选择芯和包层中的硼的相对量，使得当暴露于预定波长的光化辐射时，第一折射率和第二折射率基本相等。
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公开(公告)号：US5463312A
公开(公告)日：1995-10-31
申请号：US205899
申请日：1994-03-03
申请人： Dale R. Lutz , Trevor W. MacDougall , William L. Taylor , Wayne F. Varner , Robert A. Wandmacher
发明人： Dale R. Lutz , Trevor W. MacDougall , William L. Taylor , Wayne F. Varner , Robert A. Wandmacher
IPC分类号： G01R15/24 , G01R33/032 , G02B6/02 , G01R1/04
CPC分类号： G01R33/032 , G01R15/246
摘要： A fiber optic, Faraday-effect sensing coil has very low linear and circular birefringence, which remains stable over a wide range of temperatures. The coil is fabricated from a spun fiber having an effective linear beat length of 100 meters or more, and is annealed after being formed into the coil. The coil has improved discrimination for magnetic fields associated with electric current-carrying cables, and may be incorporated into an optical current transducer (OCT), either interferometric or polarimetric.
摘要翻译： 光纤，法拉第效应感测线圈具有非常低的线性和圆形双折射，其在宽的温度范围内保持稳定。 线圈由具有100米以上的有效线性拍子长度的纺丝纤维制成，并且在形成为线圈之后进行退火。 线圈已经改善了与载流电缆相关联的磁场的区分，并且可以被并入到光学电流传感器（OCT）中，无论是干涉测量还是偏振测量。
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公开(公告)号：US06580860B1
公开(公告)日：2003-06-17
申请号：US09515187
申请日：2000-02-29
申请人： Wayne F. Varner
发明人： Wayne F. Varner
IPC分类号： G02B602
CPC分类号： C03B37/02709 , C03B37/01228 , C03B37/0124 , C03B2203/04 , C03B2203/30 , G02B6/105 , G02B6/3636 , G02B6/3652
摘要： A method for making a highly birefringent optical fiber includes providing a preform with a substantially circular cross section. The preform includes a core region having a substantially circular cross section and a substantially elliptical cladding region adjacent the core region. The outer surface of the preform is modified to create a shaped preform with a non-circular cross section. The shaped preform is then drawn at a temperature and draw rate sufficient to provide an optical fiber with the non-circular cross section of the shaped preform.
摘要翻译： 制造高双折射光纤的方法包括提供具有基本圆形横截面的预成型件。 预型件包括具有基本圆形横截面的芯区域和与芯区域相邻的基本上椭圆形的包层区域。 改进预制件的外表面以产生具有非圆形横截面的成形预制件。 然后将成形的预制件以足以提供具有成形预制件的非圆形横截面的光纤的温度和拉伸速率被拉伸。
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6.发明授权Faraday-effect sensing coil with stable birefringence and method of making same 失效具有稳定双折射的法拉第效应感测线圈及其制造方法
公开(公告)号：US5553173A
公开(公告)日：1996-09-03
申请号：US393413
申请日：1995-02-23
申请人： Dale R. Lutz , Trevor W. MacDougall , William L. Taylor , Wayne F. Varner , Robert A. Wandmacher
发明人： Dale R. Lutz , Trevor W. MacDougall , William L. Taylor , Wayne F. Varner , Robert A. Wandmacher
CPC分类号： G01R33/032 , G01R15/246
摘要： A fiber optic, Faraday-effect sensing coil has very low linear and circular birefringence, which remains stable over a wide range of temperatures. The coil is fabricated from a spun fiber having an effective linear beat length of 100 meters or more, and is annealed after being formed into the coil. The coil has improved discrimination for magnetic fields associated with electric current-carrying cables, and may be incorporated into an optical current transducer (OCT), either interferometric or polarimetric.
摘要翻译： 光纤，法拉第效应感测线圈具有非常低的线性和圆形双折射，其在宽的温度范围内保持稳定。 线圈由具有100米以上的有效线性拍子长度的纺丝纤维制成，并且在形成为线圈之后进行退火。 线圈已经改善了与载流电缆相关联的磁场的区分，并且可以被并入到光学电流传感器（OCT）中，无论是干涉测量还是偏振测量。
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公开(公告)号：US07130515B2
公开(公告)日：2006-10-31
申请号：US10930575
申请日：2004-08-31
申请人： Wayne F. Varner , Craig R. Sykora
发明人： Wayne F. Varner , Craig R. Sykora
IPC分类号： G02B6/02
CPC分类号： G02B6/03627 , G02B6/02004 , G02B6/02395 , G02B6/03611
摘要： An optical waveguide comprises a core, an inner cladding laterally surrounding the core, and an outer cladding laterally surrounding the inner cladding, wherein the core, inner cladding, and outer cladding have a depressed well configuration. The waveguide operates in three or more wavelength bands, wherein a first wavelength band is centered at about 1300 nm, and wherein a second wavelength band is centered at about 1625 nm. The waveguide has bend losses that are less than or equal to 0.7 dB/turn when measured on a 10 mm radius bend at 1625 nm.
摘要翻译： 光波导包括芯，横向包围芯的内包层和横向围绕内包层的外包层，其中芯，内包层和外包层具有凹陷的阱结构。 波导在三个或更多个波长带中操作，其中第一波长带以约1300nm为中心，并且其中第二波长带以约1625nm为中心。 当在1625nm的10mm半径弯曲处测量时，波导具有小于或等于0.7dB /匝的弯曲损耗。
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公开(公告)号：US06603909B2
公开(公告)日：2003-08-05
申请号：US09993742
申请日：2001-11-05
申请人： Wayne F. Varner
发明人： Wayne F. Varner
IPC分类号： G02B600
CPC分类号： G02B6/02004 , G02B6/03627 , G02B6/29319 , H01S3/067 , H01S3/06754 , H01S3/094003 , H01S5/146
摘要： A fiber optic telecommunication system with a pump laser and an optical amplifier is designed to stabilize the pump laser while preventing back reflections from the pump laser into the optical amplifier. The pump laser emits radiation at a shorter wavelength, while the optical amplifier emits radiation at a longer wavelength. An optical fiber is provided to connect the devices which has an ultraviolet photosensitive core, a low attenuation single mode wavelength region and a very high attenuation, longer wavelength region. The photosensitive core allows a weak Bragg grating to be written into the fiber, to stabilize the pump laser. Apparent fundamental mode cutoff is accomplished with a depressed well design to attenuate the unwanted back reflections from the pump laser into the amplifier. The pump laser is also protected from longer wavelength signal amplifier or signal laser radiation.
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公开(公告)号：US06459838B1
公开(公告)日：2002-10-01
申请号：US09515448
申请日：2000-02-29
申请人： Wayne F. Varner
发明人： Wayne F. Varner
IPC分类号： G02B602
CPC分类号： C03B37/01228 , C03B37/01225 , C03B37/075 , C03B2203/02 , C03B2203/30 , C03B2203/32 , G02B6/105 , G02B6/3636 , G02B6/3652
摘要： A method for making a V-shaped highly birefringent optical fiber includes providing a preform with a substantially circular cross section. The outer surface of preform is modified to create a shaped preform with a substantially V-shaped cross section. The shaped preform is then drawn at a temperature and draw rate sufficient to provide an optical fiber with the V-shaped cross section of the shaped preform.
摘要翻译： 制造V型高双折射光纤的方法包括提供具有基本圆形横截面的预成型件。 预制件的外表面被修改以产生具有大致V形横截面的成形预制件。 然后将成形的预制件以足以提供具有成形预制件的V形横截面的光纤的温度和拉伸速率被拉伸。
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