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1. 发明授权

US08433169B2 Bend insensitivity in single mode optical fibers 有权
公开(公告)号：US08433169B2
公开(公告)日：2013-04-30
申请号：US13005343
申请日：2011-01-12
申请人： John Michael Fini , Poul Kristensen
发明人： John Michael Fini , Poul Kristensen
IPC分类号： G02B6/36 , G02B6/02
CPC分类号： G02B6/03688 , G02B6/02342 , G02B6/02366 , G02B6/02371 , G02B6/0238 , G02B6/03672
摘要： An optical fiber that is relatively insensitive to bend loss comprises a core region and a cladding region configured to support and guide the propagation of light in a fundamental transverse mode, the cladding region including (i) an outer cladding region having a refractive index less than that of the core region, (ii) an annular cladding pedestal region having a refractive index higher than that of the outer cladding region and comparable to that of the core region, and (iii) an annular cladding inner trench region disposed between the core region and the pedestal region, the inner trench region having a refractive index less than that of the outer cladding region. In one embodiment, the fiber also includes a (iv) an annular cladding outer trench region disposed between the pedestal region and the outer cladding region, the outer trench region having a refractive index less than that of the outer cladding region. In addition, to suppress HOMs the pedestal region is configured to resonantly couple at least one other transverse mode of the core region to at least one transverse mode of the pedestal region. Such fiber is advantageously used as access fiber, but may have other applications, such as sensor fiber.

2. 发明授权

US08107784B2 Reduced bend sensitivity and catastrophic bend loss in single mode optical fibers and method of making same 有权
标题翻译：降低单模光纤的弯曲灵敏度和灾难性弯曲损耗及其制作方法
公开(公告)号：US08107784B2
公开(公告)日：2012-01-31
申请号：US12472522
申请日：2009-05-27
申请人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
发明人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
IPC分类号： G02B6/36 , G02B6/02
CPC分类号： C03B37/018 , C03B37/01211 , C03B37/01807 , C03B2201/12 , C03B2203/22 , C03B2203/23 , G02B6/02342 , G02B6/03672 , G02B6/03677 , G02B6/03683 , G02B6/03688 , G02B6/14 , Y02P40/57
摘要： An optical fiber that is relatively insensitive to bend loss and alleviates the problem of catastrophic bend loss comprises a core region and a cladding region configured to support and guide the propagation of light in a fundamental transverse mode. The cladding region includes (i) an outer cladding region, (ii) an annular pedestal (or ring) region, (iii) an annular inner trench region, and (iv) an annular outer trench region. The pedestal region and the outer cladding region each have a refractive index relatively close to that of the outer cladding region. In order to suppress HOMs the pedestal region is configured to resonantly couple at least one (unwanted) transverse mode of the core region (other than the fundamental mode) to at least one transverse mode of the pedestal region. In a preferred embodiment, the fiber is configured so that, at a signal wavelength of approximately 1550 nm, its bend loss is no more than about 0.1 dB/turn at bend radius of 5 mm and is no more than about 0.02 dB/turn at a bend radius of 10 mm. In addition, in one embodiment, the core region also includes an inner core region and an annular outer core (or shelf) region surrounding the inner core region. The outer core region extends radially a distance of less than 9 μm from the fiber axis. In another embodiment, the inner trench region includes an annular inner portion and an annular outer (or step) portion surrounding said inner portion. The refractive index of the step portion is greater than that of the inner portion. In a preferred embodiment, both of the foregoing features of the core region and the inner trench region are incorporated in the fiber. Also described are multi-tube fabrication techniques for making such fibers.
摘要翻译：对弯曲损耗相对不敏感并减轻灾难性弯曲损耗的问题的光纤包括芯区域和被配置为支撑和引导基本横向模式的光的传播的包层区域。包层区域包括（i）外包层区域，（ii）环形基座（或环）区域，（iii）环形内沟槽区域和（iv）环形外沟槽区域。基座区域和外部包层区域的折射率相对于外部包层区域的折射率相对接近。为了抑制HOM，基座区域被配置为将芯区域（基本模式除外）的至少一个（不需要的）横向模式谐振地耦合到基座区域的至少一个横向模式。在优选实施例中，光纤被配置为使得在大约1550nm的信号波长处，其弯曲半径在5mm处的弯曲损耗不超过约0.1dB /匝，并且在不超过约0.02dB /匝弯曲半径为10mm。此外，在一个实施例中，芯区域还包括内芯区域和围绕内芯区域的环形外芯（或搁架）区域。外芯区域从纤维轴径向延伸小于9μm的距离。在另一个实施例中，内沟槽区域包括环形内部部分和围绕所述内部部分的环形外（或台阶）部分。台阶部分的折射率大于内部部分的折射率。在一个优选实施例中，芯部区域和内部沟槽区域的前述特征都包含在纤维中。还描述了用于制造这种纤维的多管制造技术。

3. 发明申请

US20110129190A1 Techniques for Manipulating Crosstalk in Multicore Fibers 有权
标题翻译：在多核纤维中操纵串扰的技术
公开(公告)号：US20110129190A1
公开(公告)日：2011-06-02
申请号：US12959184
申请日：2010-12-02
申请人： John Michael Fini , Thierry Franck Taunay , Man F. Yan , Benyuan Zhu
发明人： John Michael Fini , Thierry Franck Taunay , Man F. Yan , Benyuan Zhu
IPC分类号： G02B6/036 , G02B6/04
CPC分类号： G02B6/02042 , G02B6/4403
摘要： A multicore optical fiber includes a plurality of core regions disposed within a common cladding region. Each of the plurality of core regions is configured, in combination with the common cladding region, to propagate light along a longitudinal axis of the fiber. At least two core regions are configured to inhibit resonant coupling of propagated light therebetween within a selected region of operation. At least one segment of the fiber includes a twist that is configured such that when the twisted segment is subjected to a bend having a selected radius, the twist creates a controlled change in the amount of crosstalk between the at least two core regions, compared with the amount of crosstalk between the at least two core regions when a bend having the selected radius is introduced into a non-twisted segment of the fiber.
摘要翻译：多芯光纤包括设置在公共包层区域内的多个芯区域。多个芯区域中的每一个与公共包层区域一起配置成沿光纤的纵向轴线传播光。至少两个核心区域被配置为抑制在所选择的操作区域内的传播光的谐振耦合。纤维的至少一个部分包括扭曲，其被构造成使得当扭转的部分经受具有所选半径的弯曲时，扭转产生了至少两个核心区域之间的串扰量的受控变化，与之相比，当具有所选半径的弯曲部被引入光纤的非扭曲部分时，所述至少两个芯部区域之间的串扰的量被引入。

4. 发明申请

US20130243949A1 Modular Method of Making Single Mode Optical Fibers 有权
标题翻译：制作单模光纤的模块化方法
公开(公告)号：US20130243949A1
公开(公告)日：2013-09-19
申请号：US13893692
申请日：2013-05-14
申请人： John Michael Fini , Robert Lee Lingle, JR. , Yi Sun
发明人： John Michael Fini , Robert Lee Lingle, JR. , Yi Sun
IPC分类号： G02B6/036
CPC分类号： G02B6/036 , G02B6/02342 , G02B6/03672 , G02B6/03688 , G02B6/14
摘要： Described is a modular method of making an optical fiber comprising a core and a cladding configured to support and guide a fundamental transverse mode, the cladding including (i) an outer cladding having an index nout less than the index n1 of the core, (ii) an inner cladding having an index n2
摘要翻译：描述了一种制造光纤的模块化方法，该光纤包括被配置为支撑和引导基本横向模的芯和包层，所述包层包括（i）具有小于芯的指数n1的折射率的外包层，（ii ）具有折射率n2

5. 发明申请

US20130091899A1 Method Of Making An Optical Fiber With Trench Region In Its Index Profile 有权
标题翻译：在其索引曲线中制作具有沟槽区域的光纤的方法
公开(公告)号：US20130091899A1
公开(公告)日：2013-04-18
申请号：US13605038
申请日：2012-09-06
申请人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
发明人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
IPC分类号： C03B37/018
CPC分类号： C03B37/018 , C03B37/01211 , C03B37/01807 , C03B2201/12 , C03B2203/22 , C03B2203/23 , G02B6/02342 , G02B6/03672 , G02B6/03677 , G02B6/03683 , G02B6/03688 , G02B6/14 , Y02P40/57
摘要： An optical fiber that is relatively insensitive to bend loss and alleviates the problem of catastrophic bend loss configured to support and guide the propagation of light in a fundamental transverse mode. The cladding region includes an outer cladding region, a pedestal region, an inner trench region, and an outer trench region. The pedestal region and the outer cladding region each have a refractive index relatively close to that of the outer cladding region. To suppress HOMs the pedestal region is configured to resonantly couple at least one (unwanted) transverse mode of the core region (other than the fundamental mode) to at least one transverse mode of the pedestal region. Also described are multi-tube fabrication techniques for making such fibers as well as single-pass/double-pass fabrication techniques for making the trench regions of such fibers.
摘要翻译：对弯曲损耗相对不敏感的光纤，并且减轻了构成为支持和引导基本横向模式的光的传播的灾难性弯曲损耗的问题。包层区域包括外包层区域，基座区域，内沟槽区域和外沟槽区域。基座区域和外部包层区域的折射率相对于外部包层区域的折射率相对接近。为了抑制HOM，基座区域被配置为将芯区域（基本模式除外）的至少一个（不需要的）横向模式谐振地耦合到基座区域的至少一个横向模式。还描述了用于制造这种光纤的多管制造技术以及用于制造这种光纤的沟槽区域的单遍/双通制造技术。

6. 发明授权

US08320726B2 Methods of making single mode optical fibers with reduced bend sensitivity and catastrophic bend loss 有权
标题翻译：制造具有降低弯曲灵敏度和灾难性弯曲损耗的单模光纤的方法
公开(公告)号：US08320726B2
公开(公告)日：2012-11-27
申请号：US13374205
申请日：2011-12-15
申请人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
发明人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
IPC分类号： C03B37/027 , C03B37/018
CPC分类号： C03B37/018 , C03B37/01211 , C03B37/01807 , C03B2201/12 , C03B2203/22 , C03B2203/23 , G02B6/02342 , G02B6/03672 , G02B6/03677 , G02B6/03683 , G02B6/03688 , G02B6/14 , Y02P40/57
摘要： Described are multi-tube fabrication techniques for making an optical fiber that is relatively insensitive to bend loss and alleviates the problem of catastrophic bend loss comprises a core region and a cladding region configured to support and guide the propagation of light in a fundamental transverse mode. The cladding region includes (i) an outer cladding region, (ii) an annular pedestal (or ring) region, (iii) an annular inner trench region, and (iv) an annular outer trench region. The pedestal region and the outer cladding region each have a refractive index relatively close to that of the outer cladding region. In order to suppress HOMs the pedestal region is configured to resonantly couple at least one (unwanted) transverse mode of the core region (other than the fundamental mode) to at least one transverse mode of the pedestal region.
摘要翻译：描述了用于制造对弯曲损耗相对不敏感并减轻灾难性弯曲损耗的问题的光纤的多管制造技术，包括构造成支撑和引导基本横向模式的光的传播的芯区域和包层区域。包层区域包括（i）外包层区域，（ii）环形基座（或环）区域，（iii）环形内沟槽区域和（iv）环形外沟槽区域。基座区域和外部包层区域的折射率相对于外部包层区域的折射率相对接近。为了抑制HOM，基座区域被配置为将芯区域（基本模式除外）的至少一个（不需要的）横向模式谐振地耦合到基座区域的至少一个横向模式。

7. 发明申请

US20120159995A1 Methods of making single mode optical fibers with reduced bend sensitivity and catastrophic bend loss 有权
标题翻译：制造具有降低弯曲灵敏度和灾难性弯曲损耗的单模光纤的方法
公开(公告)号：US20120159995A1
公开(公告)日：2012-06-28
申请号：US13374205
申请日：2011-12-15
申请人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
发明人： Peter Ingo Borel , David John DiGiovanni , John Michael Fini , Poul Kristensen
IPC分类号： C03B37/027 , C03B37/018
CPC分类号： C03B37/018 , C03B37/01211 , C03B37/01807 , C03B2201/12 , C03B2203/22 , C03B2203/23 , G02B6/02342 , G02B6/03672 , G02B6/03677 , G02B6/03683 , G02B6/03688 , G02B6/14 , Y02P40/57
摘要： An optical fiber that is relatively insensitive to bend loss and alleviates the problem of catastrophic bend loss comprises a core region and a cladding region configured to support and guide the propagation of light in a fundamental transverse mode. The cladding region includes (i) an outer cladding region, (ii) an annular pedestal (or ring) region, (iii) an annular inner trench region, and (iv) an annular outer trench region. The pedestal region and the outer cladding region each have a refractive index relatively close to that of the outer cladding region. In order to suppress HOMs the pedestal region is configured to resonantly couple at least one (unwanted) transverse mode of the core region (other than the fundamental mode) to at least one transverse mode of the pedestal region. In a preferred embodiment, the fiber is configured so that, at a signal wavelength of approximately 1550 nm, its bend loss is no more than about 0.1 dB/turn at bend radius of 5 mm and is no more than about 0.02 dB/turn at a bend radius of 10 mm. In addition, in one embodiment, the core region also includes an inner core region and an annular outer core (or shelf) region surrounding the inner core region. The outer core region extends radially a distance of less than 9 μm from the fiber axis. In another embodiment, the inner trench region includes an annular inner portion and an annular outer (or step) portion surrounding said inner portion. The refractive index of the step portion is greater than that of the inner portion. In a preferred embodiment, both of the foregoing features of the core region and the inner trench region are incorporated in the fiber. Also described are multi-tube fabrication techniques for making such fibers.
摘要翻译：对弯曲损耗相对不敏感并减轻灾难性弯曲损耗的问题的光纤包括芯区域和被配置为支撑和引导基本横向模式的光的传播的包层区域。包层区域包括（i）外包层区域，（ii）环形基座（或环）区域，（iii）环形内沟槽区域和（iv）环形外沟槽区域。基座区域和外部包层区域的折射率相对于外部包层区域的折射率相对接近。为了抑制HOM，基座区域被配置为将芯区域（基本模式除外）的至少一个（不需要的）横向模式谐振地耦合到基座区域的至少一个横向模式。在优选实施例中，光纤被配置为使得在大约1550nm的信号波长处，其弯曲半径在5mm处的弯曲损耗不超过约0.1dB /匝，并且在不超过约0.02dB /匝弯曲半径为10mm。此外，在一个实施例中，芯区域还包括内芯区域和围绕内芯区域的环形外芯（或搁架）区域。外芯区域从纤维轴径向延伸小于9μm的距离。在另一个实施例中，内沟槽区域包括环形内部部分和围绕所述内部部分的环形外（或台阶）部分。台阶部分的折射率大于内部部分的折射率。在一个优选实施例中，芯部区域和内部沟槽区域的前述特征都包含在纤维中。还描述了用于制造这种纤维的多管制造技术。

8. 发明申请

US20100002980A1 Polarization-dependent hollow-core optical fibers 有权
标题翻译：偏振相关中空光纤
公开(公告)号：US20100002980A1
公开(公告)日：2010-01-07
申请号：US12217215
申请日：2008-07-02
申请人： John Michael Fini
发明人： John Michael Fini
IPC分类号： G02B6/032 , G02B6/00
CPC分类号： G02B6/02328 , G02B6/02338 , G02B6/02371 , G02B6/0239 , G02B6/105
摘要： In accordance with one aspect of my invention, the core and cladding regions of a hollow-core optical fiber are configured so that a signal mode is coupled to a cladding mode in order to exploit polarization-dependent properties. In general, the fiber comprises a hollow-core region surrounded by a cladding region, which includes a localized hollow-waveguide region. The core and waveguide regions are configured so that the coupling between a signal mode in the core region and a cladding mode in the waveguide region are phase-matched for efficient coupling, and the phase-matching condition is made polarization-dependent to provide improved control of the fiber's polarization dependent properties. In a preferred embodiment, the cladding region comprises a bandgap structure. In one embodiment, the at least one region has a non-symmetric cross-sectional shape (e.g., oblong) with respect to one of its transverse axes. In an alternative embodiment, both the core region and the waveguide region are non-symmetric but with respect to orthogonal axes. In another embodiment, the at least one region has a multiplicity of micro-defects disposed at or near the periphery thereof and in a non-rotationally-symmetric pattern. In an alternative embodiment, both the core region and the waveguide region include a multiplicity of micro-defects at or near the periphery thereof in a non-rotationally-symmetric pattern. Optical fibers of this type find application in polarization-dependent optical couplers (e.g., splitters, polarizers) and in sensors.
摘要翻译：根据本发明的一个方面，中空芯光纤的芯和包层区被配置为使得信号模式耦合到包层模式以便利用偏振相关性质。通常，纤维包括由包层区域围绕的中空区域，其包括局部中空波导区域。核心和波导区域被配置为使得芯区域中的信号模式和波导区域中的包层模式之间的耦合被相位匹配用于有效耦合，并且相位匹配条件被取决于偏振，以提供改进的控制的纤维偏振相关性质。在优选实施例中，包层区域包括带隙结构。在一个实施例中，至少一个区域相对于其一个横向轴线具有非对称的横截面形状（例如，长方形）。在替代实施例中，芯区域和波导区域都是非对称的，但是相对于正交轴。在另一个实施例中，至少一个区域具有多个微缺陷，其设置在其周边处或其周边处并且以非旋转对称的图案。在替代实施例中，芯区域和波导区域在非旋转对称图案中包括在其周边处或附近的多个微缺陷。这种类型的光纤在偏光相关的光耦合器（例如，分光器，偏振器）和传感器中找到应用。

9. 发明授权

US07356233B2 Suppression of transverse modes in bandgap microstructure optical fibers 有权
标题翻译：在带隙微结构光纤中抑制横向模式
公开(公告)号：US07356233B2
公开(公告)日：2008-04-08
申请号：US11403787
申请日：2006-04-13
申请人： John Michael Fini
发明人： John Michael Fini
IPC分类号： G02B6/02 , G02B6/036 , G02B6/028 , G02B6/032 , G02B6/26 , G02B6/42
CPC分类号： G02B6/02328 , G02B6/14
摘要： An optical fiber comprises core and cladding regions configured to guide the propagation of light (or radiation) in the core region. The cladding region includes a periodic structure configured to produce light guiding by bandgap confinement. In order to suppress higher order odes (HOMs) in the core region, the cladding region includes at least one perturbation region configured so that a mode of the cladding region is resonant with a HOM of the core region. In a preferred embodiment of my invention, the perturbation region is configured so that the fundamental mode of the cladding region is resonant with a HOM of the core region.
摘要翻译：光纤包括被配置为引导光（或辐射）在芯区域中的传播的芯和包层区域。包层区域包括构造成通过带隙限制产生光引导的周期性结构。为了抑制芯区域中的高阶（HOM），包层区域包括至少一个扰动区域，其被配置为使得包层区域的模式与核心区域的HOM共振。在本发明的优选实施例中，扰动区域被配置为使得包层区域的基本模式与核心区域的HOM谐振。

10. 发明授权

US07783149B2 Large-mode-area optical fibers with reduced bend distortion 有权
标题翻译：具有减小弯曲变形的大面积光纤
公开(公告)号：US07783149B2
公开(公告)日：2010-08-24
申请号：US12072574
申请日：2008-02-27
申请人： John Michael Fini
发明人： John Michael Fini
IPC分类号： G02B6/02 , G02F1/295
CPC分类号： H01S3/06708 , G02B6/02009 , G02B6/0281
摘要： In a LMA optical fiber the index of the core region is graded (i.e., as viewed in a radial cross-section) and has a grading depth of Δng, as measured from a central maximum at or near the axis to a lower level that is not greater than the central maximum and not less than the index of the cladding region. When the fiber is to be bent at a bend radius, the grading depth, the radius of the core region, and the difference between the central maximum index and the cladding region index are configured to reduce bend distortion. They may also advantageously be configured to maximize the effective mode-field area of the fundamental mode, suppress higher order modes, and reduce bend loss. In a preferred embodiment, the core region includes a centralized gain region, which in turn includes a dark region that is no more than 30% of the area of the gain region. Also described is a method of making such LMA fibers.
摘要翻译：在LMA光纤中，芯区域的折射率被分级（即，如在径向横截面中看到的），并且具有从在轴线处或附近的中心最大值到较低水平测量的分级深度＆Dgrng 不大于中心最大值，不小于包层区域的折射率。当纤维以弯曲半径弯曲时，分级深度，芯部区域的半径以及中心最大折射率和包层区域折射率之间的差被配置为减少弯曲变形。它们还可以有利地被配置为使基模的有效模场面积最大化，抑制较高阶模，并减少弯曲损耗。在优选实施例中，核心区域包括集中增益区域，该集中增益区域又包括不超过增益区域面积的30％的暗区域。还描述了制造这种LMA纤维的方法。

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