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公开(公告)号：US07254297B1
公开(公告)日：2007-08-07
申请号：US09203166
申请日：1998-12-01
申请人： George H. Beall , David L. Weidman
发明人： George H. Beall , David L. Weidman
IPC分类号： G02B6/26
CPC分类号： G02B6/0218
摘要： An athermal optical device and a method for producing the device, such as an athermal optical fiber reflective grating, are described. The athermal optical fiber reflective grating device comprises a negative expansion substrate, an optical fiber mounted on the substrate surface, and a grating defined in the optical fiber. The method for producing the athermal optical fiber reflective grating device comprises providing a negative expansion substrate, mounting an optical fiber with at least one reflective grating defined therein onto the substrate upper surface, and affixing the optical fiber to the substrate at at least two spaced apart locations.
摘要翻译： 描述了一种无热光学器件及其制造方法，如无热光纤反射光栅。 无热光纤反射光栅装置包括负扩展基板，安装在基板表面上的光纤和光纤中限定的光栅。 制造无光纤光纤反射光栅装置的方法包括提供负扩展基板，将其中限定有至少一个反射光栅的光纤安装在基板上表面上，并将光纤以至少两个间隔开的方式固定到基板 位置。
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公开(公告)号：US06490394B1
公开(公告)日：2002-12-03
申请号：US09101630
申请日：1998-07-14
申请人： George H. Beall , David L. Weidman
发明人： George H. Beall , David L. Weidman
IPC分类号： G02B626
CPC分类号： G02B6/0218 , C03C10/0027 , C03C17/002 , G02B6/10 , G02B6/2835
摘要： An athermal optical device and a method for producing the device, such as an athermal optical fiber reflective grating (20), are described. The athermal optical fiber reflective grating device (20) comprises a negative expansion substrate (22), an optical fiber (24) mounted on the substrate (22) surface, and a grating (26) defined in the optical fiber (24). The method for producing the athermal optical fiber reflective grating (20) device comprises providing a negative expansion substrate (22), mounting an optical fiber (24) with at least one reflective grating (26) defined therein onto the substrate (20) upper surface, and affixing the optical fiber (24) to the substrate (22) at at least two spaced-apart locations (30, 32).
摘要翻译： 描述了一种无热光学器件及其制造方法，如无热光纤反射光栅（20）。 无光纤光反射光栅装置（20）包括负扩展基板（22），安装在基板（22）表面上的光纤（24）和限定在光纤（24）中的光栅（26）。 制造无光纤光纤反射光栅（20）装置的方法包括提供负扩展基板（22），将限定有至少一个反射光栅（26）的光纤（24）安装到基板（20）的上表面 ，并且在至少两个间隔开的位置（30,32）处将光纤（24）固定到基板（22）。
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公开(公告)号：US5412745A
公开(公告)日：1995-05-02
申请号：US238384
申请日：1994-05-05
CPC分类号： G02B6/2835 , G02B6/03633
摘要： A fiber optic coupler comprising a plurality of single-mode optical fibers, each of which is tapered to form a small diameter section that extends in contiguous relationship with the small diameter sections of the other fibers to form a coupling region. Each of the fibers has a core surrounded by a cladding of refractive index lower than that of the core. At least one of the fibers has a refractive index pedestal of refractive index n.sub.i between said core and cladding, wherein n.sub.1 >n.sub.i >n.sub.2, n.sub.1 and n.sub.2 being the refractive indices of the core and cladding, respectively.
摘要翻译： 一种光纤耦合器，包括多个单模光纤，每个单模光纤被锥形以形成与其它光纤的小直径部分相邻延伸的小直径部分，以形成耦合区域。 每个纤维具有由折射率低于芯的折射率的包层包围的芯。 所述纤维中的至少一个在所述芯和包层之间具有折射率为ni的折射率基座，其中n1，n2，n1和n2分别是芯和包层的折射率。
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公开(公告)号：US5295210A
公开(公告)日：1994-03-15
申请号：US999296
申请日：1992-12-31
申请人： Daniel A. Nolan , David L. Weidman
发明人： Daniel A. Nolan , David L. Weidman
CPC分类号： G02B6/2835 , G02B6/2856
摘要： An achromatic fiber optic coupler of the type wherein three single-mode optical fibers are fused together along a portion of the lengths thereof to form a coupling region. Each fiber includes a core and a cladding, the lowest refractive index of the fiber claddings being n.sub.2. The fibers are disposed in a triangular array in the coupling region. A matrix glass body of refractive index n.sub.3 surrounds the coupling region, n.sub.3 being lower than n.sub.2 by such an amount that the value of .DELTA..sub.2-3 is less than 0.125%, wherein .DELTA..sub.2-3 equals (n.sub.2.sup.2' -n.sub.3.sup.2)/2n.sub.2.sup.2.
摘要翻译： 这种类型的消色差光纤耦合器，其中三个单模光纤沿其长度的一部分熔合在一起以形成耦合区域。 每个光纤包括芯和包层，光纤包层的最低折射率为n2。 纤维在耦合区域中以三角形阵列布置。 折射率为n3的矩阵玻璃体围绕耦合区域，n3低于n2，使得（Delta）2-3的值小于0.125％，其中（Delta）2-3等于（n22'- n32）/ 2n22。
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公开(公告)号：US06640031B2
公开(公告)日：2003-10-28
申请号：US10171316
申请日：2002-06-12
申请人： Liang Dong , Gang Qi , David L. Weidman
发明人： Liang Dong , Gang Qi , David L. Weidman
IPC分类号： G02B634
CPC分类号： G02B6/02014 , G02B6/02023 , G02B6/02261 , G02B6/0228 , G02B6/03611 , G02B6/03644 , G02B6/0365 , G02B6/03672 , G02B6/14 , G02B6/29377
摘要： A dispersion compensating module, mode converter, coupler and dispersion compensated optical fiber therein. The dispersion compensating fiber has a plurality of core segments, the refractive index profile being selected to exhibit properties such that an LP02 mode at 1550 nm may be propagated a distance (generally 0.5-3.0 km), upon conversion to LP02, to compensate for dispersion of a length of transmission waveguide preferably greater than 25 km propagating in an LP01 mode. In another embodiment, the dispersion compensating module has a mode converter having a reflective fiber grating for converting a first to a second mode interconnected to a dispersion compensated fiber propagating in the second mode. The mode converter has a coupler adapted to operatively couple light propagating in a first mode from a first fiber into a second, and a reflective fiber grating operatively coupled to the second fiber; the grating being capable of converting light from the first into the second mode. According to another embodiment, an optical fiber coupler is provided having a first fiber with a first propagation constant in a first mode, and a second fiber within the coupler having a second propagation constant, the second fiber including a necked-down portion which is formed prior to fusion of the fibers, the necked-down portion being formed such that the local propagation constant of the second fiber substantially matches the first propagation constant thereby enhancing first mode coupling.
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6.发明授权公开(公告)号：US06483618B2
公开(公告)日：2002-11-19
申请号：US09450607
申请日：1999-11-30
IPC分类号： H04J1402
CPC分类号： G02B6/2932 , G02B6/29361 , G02B6/29383 , H04J14/02
摘要： A wavelength division demultiplexer includes a channel dropping component for receiving optical signals transmitted through a plurality of optical channels, defined by successively different light wavelength bands at intervals ranging between a first channel having the lowest wavelength band to a last channel having the highest wavelength band. The channel dropping component separates at least one channel having a wavelength band intermediate the lowest wavelength band and the highest wavelength band. The demultiplexer further includes an edge filter for separating optical signals received from the channel dropping component that have wavelengths below the intermediate wavelength band from optical signals having wavelengths above the intermediate wavelength band. The separated optical signals are transmitted from the edge filter in two different optical paths. The demultiplexer further includes a channel separator for separating optical signals transmitted in at least one of the optical paths from one another.
摘要翻译： 波分解复用器包括：信道丢弃分量，用于接收通过多个光信道发射的光信号，所述光信号由具有最低波长带的第一信道与具有最高波长带的最后一个信道之间的间隔的连续不同的光波长带限定。 信道丢弃组件分离具有在最低波长带和最高波长带之间的波长带的至少一个信道。 解复用器还包括边缘滤波器，用于从具有高于中间波长带的波长的光信号中分离出具有低于中间波长带的波长的信道丢弃分量接收的光信号。 分离的光信号从边缘滤波器以两个不同的光路传输。 解复用器还包括用于分离在至少一个光路中彼此传输的光信号的信道分离器。
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7.发明授权Coaxial optical fiber coupler transmitter-receiver apparatus and method of making same 失效同轴光纤耦合器发射机 - 接收装置及其制造方法
公开(公告)号：US5177803A
公开(公告)日：1993-01-05
申请号：US692493
申请日：1991-04-29
申请人： Mark A. Newhouse , David L. Weidman
发明人： Mark A. Newhouse , David L. Weidman
CPC分类号： G02B6/29352 , G02B6/2552 , G02B6/2835 , G02B6/29332 , G02B6/4203 , G02B6/4246
摘要： An optical two-way transmission-received communications system utilizing a coaxial coupler in place of a standard coupler, the optical system being capable of operation either in a single or multiple wavelength mode by designing the coupling region to have the proper length (i.e., either in 3dB or WDM operation), and further comprising a transmitter and a detector adjacent a coaxial coupler. The detector of the system is provided with a hole in its center in order to allow the transmitter access to the core waveguide of the coaxial coupler. The coaxial coupler may be formed from a rod in tube structure with a core waveguide extension adjacent the Tx/Rx and an integral pigtail on the opposite side of the coupler.
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公开(公告)号：US5956443A
公开(公告)日：1999-09-21
申请号：US992396
申请日：1997-12-17
CPC分类号： G02B6/2835 , G02B6/2856
摘要： A waveguide fiber coupler including a tubular element surrounding the coupling region wherein sealed elongated open regions are formed between the fused waveguide surfaces which form a part of the coupler and the tubular element. The coupler exhibits improved properties due to the presence of the elongated open regions. The sealing of the elongated open regions provides for improved environmental stability of the coupler.
摘要翻译： 一种波导光纤耦合器，包括围绕耦合区域的管状元件，其中在形成耦合器和管状元件的一部分的熔融波导表面之间形成密封的细长开口区域。 由于存在细长的开放区域，耦合器表现出改进的性能。 细长开放区域的密封提供了耦合器的改善的环境稳定性。
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公开(公告)号：US5754720A
公开(公告)日：1998-05-19
申请号：US635038
申请日：1996-04-17
CPC分类号： G02B6/2835 , G02B6/2856
摘要： A method of making 1.times.2 or 2.times.2 overclad couplers, switches and the like such that the process is more reproducible and loss characteristics are improved. Such couplers are typically made by inserting the stripped portions of two active optical fibers into a tube, heating the tube midregion to collapse it onto the fibers and stretching the central portion of the collapsed midregion to achieve the desired coupling characteristics. The improvement involves the insertion of one or two spacer fibers into the tube bore along with the active fibers to take up empty space that had been present in tube bore and to prevent an active fiber from sagging and crossing over the other fiber when the tube is heated during the tube collapse step.
摘要翻译： 制造1x2或2x2外包耦合器，开关等的方法，使得该过程更可再现并且损耗特性得到改善。 这种耦合器通常通过将两个活性光纤的剥离部分插入管中来制造，加热管中区以将其折叠到纤维上并拉伸折叠的中间区域的中心部分以实现期望的耦合特性。 改进之处在于将一个或两个间隔纤维与活性纤维一起插入到管孔中，以占据管孔中存在的空白空间，并且当管是管中时，防止活性纤维下垂并跨越另一纤维 在管塌陷步骤期间加热。
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公开(公告)号：US5353363A
公开(公告)日：1994-10-04
申请号：US143753
申请日：1993-11-01
CPC分类号： G02B6/3504 , G02B6/2856 , G02B6/3536 , G02B6/3548 , G02B6/3572 , G02B6/3578
摘要： A 1.times.N fiber optic switch is disclosed for selectively coupling light from a first fiber to any one of a plurality of output fibers. The switch includes a coupler in which the first optical fiber and the plurality of optical fibers are elongated in a narrowed coupling region. The coupling region can be bent in various directions to cause the radius of curvature of the input fiber to differ from that of at least one of the output fibers, whereby light propagating in the input fiber can be coupled to only one of the output fibers or to more than one of those fibers.
摘要翻译： 公开了一种1xN光纤开关，用于将来自第一光纤的光选择性地耦合到多个输出光纤中的任何一个。 开关包括耦合器，其中第一光纤和多个光纤在窄耦合区域中伸长。 耦合区域可以沿各个方向弯曲，以使输入光纤的曲率半径与至少一个输出光纤的曲率半径不同，由此在输入光纤中传播的光可以仅耦合到输出光纤中的一个或 到多于一种纤维。
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