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61. 发明授权

US06229937B1 Circularly polarized fiber in optical circuits 失效
标题翻译：光电路中的圆偏振光纤
公开(公告)号：US06229937B1
公开(公告)日：2001-05-08
申请号：US09339446
申请日：1999-06-24
申请人： Daniel Aloysius Nolan , Mohammed Nazrul Islam
发明人： Daniel Aloysius Nolan , Mohammed Nazrul Islam
IPC分类号： G02B628
CPC分类号： G02B6/274 , G02B6/105 , G02B6/2706 , G02B6/2766 , G02B6/29361 , G02B6/4215 , H04B10/532 , H04J14/02 , H04J14/06
摘要： The invention is directed to circularly polarized single mode waveguide fiber and to high data rate, multiplexed transmission systems that employ this fiber. The circularly polarized waveguide fiber attenuates the non-linear effects present in such high performance transmission links. In particular, self phase modulation is attenuated by more than 30% and four wave mixing is essentially eliminated. This latter effect occurs because four wave mixing does not occur when a multiplexed link is made of a plurality of circularly polarized waveguide fibers which are arranged so that adjacent fibers have opposite circular polarization. The circularly polarized fiber enhances the non-linear effect of cross phase modulation, a feature that can be used in optical switching components associated with the transmission link. In addition, the strength of the XPM in CPF is independent of the relative polarization states of the signal and control pulses.
摘要翻译：本发明涉及圆偏振单模波导光纤以及采用该光纤的高数据速率复用传输系统。圆偏振波导纤维衰减了这种高性能传输链路中存在的非线性效应。特别地，自相位调制被衰减超过30％，并且基本上消除了四个波混频。发生后一种影响是因为当多路复用链路由多条圆极化波导纤维制成时，不发生四波混频，这些波导纤维布置成使相邻的光纤具有相反的圆极化。圆偏振光纤增强了交叉相位调制的非线性效应，该特征可用于与传输链路相关联的光交换部件中。此外，CPF中的XPM的强度与信号和控制脉冲的相对极化状态无关。

62. 发明授权

US06212312B1 Optical multiplexer/demultiplexer using resonant grating filters 失效
标题翻译：光复用器/解复用器使用谐振光栅滤波器
公开(公告)号：US06212312B1
公开(公告)日：2001-04-03
申请号：US09398242
申请日：1999-09-17
申请人： Eric B. Grann , L. Curtis Maxey
发明人： Eric B. Grann , L. Curtis Maxey
IPC分类号： G02B628
CPC分类号： G02B6/12007 , G02B5/1861 , G02B6/29307 , G02B6/2931 , G02B6/29311 , G02B6/29362 , G02B6/2938 , G02B27/1086 , H04J14/02
摘要： A wavelength division multiplex/demultiplexer (WDM) has a plurality of narrow-band zeroth order resonant grating filters (10a-10e) to multiplex or demultiplex multiple wavelengths that have very close channel spacing. In one embodiment, a plurality of these filters (10a14 10e) are assembled in a block (20) in parallel and at an angle to a propagation axis to reflect signals for a plurality of discrete frequency channels. The block spacing material (21) can be liquid or solid. In another embodiment, the angular orientation of the resonant grating filters (10f-10g) is varied slightly to provide reflected signals for the plurality of discrete frequency channels. Crosstalk between channels can be reduced by reflecting each signal three times. Individual filters can be of binary structure or a sinusoidal grating (16) and can be made using thin film techniques.
摘要翻译：波分复用/解复用器（WDM）具有多个窄带零阶谐振光栅滤波器（10a-10e），用于对具有非常接近的信道间隔的多个波长进行复用或解复用。在一个实施例中，多个这些滤波器（10a14,10e）以平行并且与传播轴成角度组装在块（20）中以反映多个离散频道的信号。块间隔材料（21）可以是液体或固体。在另一个实施例中，谐振光栅滤光器（10f-10g）的角度取向略微变化，以提供多个离散频道的反射信号。可以通过反映每个信号三次来减少通道之间的串扰。单个滤波器可以是二进制结构或正弦光栅（16），并且可以使用薄膜技术制成。

63. 发明授权

US06198857B1 Add/drop optical multiplexing device 有权
标题翻译：添加/删除光复用器件
公开(公告)号：US06198857B1
公开(公告)日：2001-03-06
申请号：US09222626
申请日：1998-12-29
申请人： Michael E. Grasis , Michael A. Scobey , Derek E. Spock , Robert W. Lafreniere
发明人： Michael E. Grasis , Michael A. Scobey , Derek E. Spock , Robert W. Lafreniere
IPC分类号： G02B628
CPC分类号： G02B6/29367 , G02B6/29365 , G02B6/29383 , H04J14/0206 , H04J14/0209
摘要： An optical multiplexing device is disclosed for multiplexing optical signals, for example, for a fiber-optic telecommunication system employing wavelength division multiplexing. The optical multiplexing device has a filter assembly defining a light path, preferably a multi-bounce zigzag expanded beam light path, from a common port at least to a first channel port and then a second channel port and then a pass-through port. The first channel port has a first optical filter element, for example, a multi-cavity interference filter, which is transparent to a wavelength sub-range within the wavelength range passed by the common port and the pass-through port, and substantially reflective of other wavelengths within such wavelength range. The second channel port includes a second optical filter element having light transmittance and reflectance properties substantially the same as those of the first optical filter element. The optical multiplexing device can be used to extract or drop a selected wavelength sub-range, most typically a single channel signal, from the multiplexed light, and to then inject a new signal into the multiplexed light at that same wavelength sub-range. In accordance with preferred embodiments, the optical multiplexing device serves as an add/drop filter arrangement to extract the signal of a particular channel and then immediately use the available channel by injecting a new signal at that same wavelength sub-range.
摘要翻译：公开了一种用于复用光信号的光学多路复用装置，例如用于采用波分复用的光纤电信系统。光学多路复用装置具有滤光器组件，其限定从公共端口至少到第一通道端口，然后第二通道端口，然后是通过端口的光路径，优选多反射锯齿形扩展光束光路。第一通道端口具有第一滤光器元件，例如多腔干涉滤光器，其对于由公共端口和通过端口通过的波长范围内的波长子范围是透明的，并且基本上反射波长范围内的其他波长。第二通道端口包括具有与第一光学滤光元件基本上相同的透光率和反射率特性的第二滤光器元件。光复用装置可以用于从所复用的光中提取或丢弃所选择的波长子范围，最典型的是单个信道信号，然后在相同的波长子范围内将新的信号注入多路复用的光。根据优选实施例，光复用装置用作提取特定信道的信号的加/减滤波器装置，然后通过在相同波长子范围注入新信号立即使用可用信道。

64. 发明授权

US06198570B1 Optical filter, manufacturing method thereof, and optical amplifier equipped with said optical filter 有权
标题翻译：光滤波器及其制造方法以及配备有所述滤光器的光放大器
公开(公告)号：US06198570B1
公开(公告)日：2001-03-06
申请号：US09259305
申请日：1999-03-01
申请人： Masaru Fukushima , Haruki Ogoshi , Hijiri Nimura
发明人： Masaru Fukushima , Haruki Ogoshi , Hijiri Nimura
IPC分类号： G02B628
CPC分类号： H04B10/2941 , H01S3/10023 , H01S2301/06
摘要： A method of manufacturing an optical filter that can restrain the wavelength dependence of the gain of an optical amplifier. The input signal light power, output power of pump light source (8), and the output signal light power of an optical amplifier (4) are set to the power values used for optical communication systems, and the total power of the simulation input light of a plurality of wavelengths (&lgr;1, &lgr;2, . . . &lgr;n) from light sources (1a) and an input light (probe light) from light sources (1m) are set equal to the total power of the input signals of a plurality of wavelengths used in wavelength division multiplex transmission systems. In this condition, the input light are multiplexed and are launched into optical amplifier (4), and the amount of attenuation is variably adjusted so that the output power from optical amplifier (4) in correspondence to the probe light will be within the range determined by the maximum and minimum of the output power corresponding to the simulation input light to determine the attenuation amount corresponding to the wavelength of the probe light. The above operation is repeated upon varying the wavelength of the probe light, and loss spectrum of the optical filter is set to the loss spectrum of the attenuation amounts in one-to-one correspondence with the respective wavelengths.
摘要翻译：一种制造可以抑制光放大器的增益的波长依赖性的滤光器的方法。输入信号光功率，泵浦光源的输出功率（8）和光放大器（4）的输出信号光功率被设置为用于光通信系统的功率值，并且模拟输入光的总功率来自光源（1a）的多个波长（lambd1，lambd2，... lambdn）和来自光源（1m）的输入光（探测光）被设置为等于多个用于波分复用传输系统的波长。在这种情况下，输入光被多路复用并被发射到光放大器（4）中，并且可变地调整衰减量，使得来自光放大器（4）的对应于探测光的输出功率将在确定的范围内通过对应于模拟输入光的输出功率的最大和最小来确定对应于探测光的波长的衰减量。在改变探测光的波长时重复上述操作，并且将滤光器的损耗光谱设置为与各个波长一一对应的衰减量的损耗谱。

65. 发明授权

US06195480B1 Optical transmission device and optical transmission system employing the same 失效
公开(公告)号：US06195480B1
公开(公告)日：2001-02-27
申请号：US09129844
申请日：1998-08-06
申请人： Junya Kosaka , Takayuki Suzuki , Hiroyuki Nakano
发明人： Junya Kosaka , Takayuki Suzuki , Hiroyuki Nakano
IPC分类号： G02B628
CPC分类号： H04B10/2935 , H04B2210/256 , Y10S372/703
摘要： An optical transmission device which reduces optical noise in an optical transmission system. The optical transmission device includes a core light amplifying unit, and a first buffer light amplifying unit for amplifying a first signal light from a first transmission path and an amplified second signal light from the core light amplifying unit. The first buffer light amplifying unit supplies the core light amplifying unit with the first signal light, and supplies the first transmission path with the amplified second signal light. Also provided is a second buffer light amplifying unit for amplifying a second signal light from a second transmission path and an amplified first signal light from the core light amplifying unit. The second buffer light amplifying unit supplies the core light amplifying unit with the second signal light, and supplies the second transmission path with the amplified first signal light.

66. 发明授权

US06192173B1 Flexible WDM network architecture 有权
标题翻译：灵活的WDM网络架构
公开(公告)号：US06192173B1
公开(公告)日：2001-02-20
申请号：US09324124
申请日：1999-06-02
申请人： Alan Glen Solheim , Azmina Somani , Robert Spagnoletti
发明人： Alan Glen Solheim , Azmina Somani , Robert Spagnoletti
IPC分类号： G02B628
CPC分类号： H04J14/0221 , H04J14/0219
摘要： A unidirectional or bidirectional node for use in an optical communications network, a network consisting of such nodes and a method of maintaining a target loss around a ring. The node comprises one or more optical couplers as well as either or both of drop circuitry connected to an output port and add circuitry connected to an input port. This allows for changes to the wavelength plan without interruption of the ring traffic. If add circuitry is used, the wavelengths in the filtered add signal should be distinct from those of the incoming signal on the main optical path which is merged with the add signal. When separate fibers are used for transmitting and receiving data between a hub and nodes in a ring, the through loss of the couplers is reduced for upstream couplers, which increases the available loss to be assigned to the fiber. The method of maintaining a target loss around a ring relies on the known through loss of the coupler at each node to set the gain of an amplifier connected to the node.
摘要翻译：用于光通信网络中的单向或双向节点，由这种节点组成的网络以及围绕环路维持目标损耗的方法。节点包括一个或多个光耦合器以及连接到输出端口的分路电路中的一个或两个，并且添加连接到输入端口的电路。这允许波长计划的更改，而不会中断环网流量。如果使用加法电路，滤波后的加法信号中的波长应与主光路上与加法信号合并的输入信号的波长不同。当单独的光纤用于在一个环中的一个集线器和节点之间发送和接收数据时，上游耦合器的耦合器的通过损耗减少，这增加了分配给光纤的可用损耗。在环周围保持目标损耗的方法依赖于每个节点处耦合器已知的通过损耗来设置连接到该节点的放大器的增益。

67. 发明授权

US06175672B1 RF wide bandwidth lossless high performance low noise transmissive link 有权
标题翻译： RF宽带宽无损高性能低噪声传输链路
公开(公告)号：US06175672B1
公开(公告)日：2001-01-16
申请号：US09336264
申请日：1999-06-18
申请人： Irwin L. Newberg , Robert R. Hayes , Kapriel V. Krikorian , Robert Y. Loo , Willie W. Ng , Robert A. Rosen
发明人： Irwin L. Newberg , Robert R. Hayes , Kapriel V. Krikorian , Robert Y. Loo , Willie W. Ng , Robert A. Rosen
IPC分类号： G02B628
CPC分类号： H04B10/2575
摘要： A substantially lossless transmissive link, such as an RF fiber optic link, that selectively employs a number of techniques to improve various link parameters. The link may be structured to comprise a high power light source, such as a laser, that provides light output having a high level of optical power. A feedback circuit may be disposed around the light source that reduces relative-intensity-noise levels produced by the light source at low frequencies. A modulator is provided that modulates the light output of the light source. Preferably, a dual output modulator may be used to provide two modulated optical signals whose respective RF modulation is “effectively” 180 degrees out of phase. An optical fiber that transmits the modulated optical signal(s). A photodetector without a load resistor directly on its output that is operable at the high level of optical power, receives the modulated light and recovers the RF signal. A dual balaniced photodetector that is used in conjunction with the dual output modulator. An RF component, such as an amiplifier, that is coupled directly to an output of the photodetector that provides a load resistance for the link.
摘要翻译：基本上无损的透射链路，例如RF光纤链路，其选择性地采用多种技术来改善各种链路参数。链路可以被构造为包括提供具有高水平光功率的光输出的诸如激光器的高功率光源。可以在光源周围设置反馈电路，从而降低光源在低频时产生的相对强度噪声水平。提供调制器来调节光源的光输出。优选地，双输出调制器可以用于提供两个调制的光信号，其相应的RF调制“有效地”相位相差180度。发送调制光信号的光纤。没有负载电阻器的光电检测器直接在其输出端处可以在高功率电平下工作，接收调制的光并恢复RF信号。双重平衡光电检测器，与双输出调制器结合使用。 RF分量，例如放大器，其直接耦合到光电检测器的输出端，为链路提供负载电阻。

68. 发明授权

US06173094B2 Optical-transmission system having a split-gain amplifier and a signal-modifying device 失效
标题翻译：具有分束增益放大器和信号修正装置的光传输系统
公开(公告)号：US06173094B2
公开(公告)日：2001-01-09
申请号：US09274681
申请日：1999-03-24
申请人： John E. Bowerman , Jeffrey W. Grissom , Robert J. Walker
发明人： John E. Bowerman , Jeffrey W. Grissom , Robert J. Walker
IPC分类号： G02B628
CPC分类号： H04B10/2525 , H04B10/25253
摘要： An optical-transmission system includes a split-gain amplifier, a first connector device, a second connector device, and a signal-modifying device. The split-gain amplifier has a first gain stage optically connected to a first set of at least two waveguide paths and a second gain stage optically connected to a second set of at least two waveguide paths. The first connector device optically connects the at least two waveguide paths of the first set to a first combined-waveguide path. The second connector device optically connects the at least two waveguide paths of the second set to a second combined-waveguide path. The signal-modifying device is optically connected to the first and second combined-waveguide paths.
摘要翻译：光传输系统包括分频增益放大器，第一连接器装置，第二连接器装置和信号修改装置。分束增益放大器具有光学连接到第一组至少两个波导路径的第一增益级和与第二组至少两个波导路径光连接的第二增益级。第一连接器装置将第一组的至少两个波导路径光学地连接到第一组合波导路径。第二连接器装置将第二组的至少两个波导路径光学地连接到第二组合波导路径。信号修改装置光学连接到第一和第二组合波导路径。

69. 发明授权

US06836588B1 Optical signal interleaving comb filter with reduced chromatic dispersion and applications therefor 失效
标题翻译：具有减少色散的光信号交织梳状滤波器及其应用
公开(公告)号：US06836588B1
公开(公告)日：2004-12-28
申请号：US10428646
申请日：2003-05-01
申请人： An Andrew Zeng
发明人： An Andrew Zeng
IPC分类号： G02B628
CPC分类号： G02B6/29386 , G02B6/29355 , H04B10/25133 , Y10S372/703
摘要： Optical signal interleaver/deinterleavers with reduced chromatic dispersion are described. In one embodiment, the interleaver/deinterleavers include two optical filters and an optical isolator coupled to receive the output of each of the optical filters. The optical isolators feed the filtered signals back to the filters. Passing the filtered signals back through the filters in the opposite direction as the first pass allows the filters to cancel, or nearly cancel, the chromatic dispersion caused by the filters on the first pass. Thus, the interleaver/deinterleavers provide reduced chromatic dispersion as compared to use of a single filter or of cascaded filters.
摘要翻译：描述了具有降低的色散的光信号交织器/解交织器。在一个实施例中，交织器/解交织器包括耦合以接收每个光学滤波器的输出的两个光学滤波器和光学隔离器。光隔离器将滤波后的信号反馈给滤波器。将滤波后的信号通过滤波器与第一次通过相反的方向，使得滤波器能够消除或几乎消除由第一遍滤波器引起的色散。因此，与使用单个滤波器或级联滤波器相比，交织器/解交织器提供降低的色散。

70. 发明授权

US06832018B2 Dynamically reconfigurable optical add/drop multiplexer 失效
标题翻译：动态可重配置的光分插复用器
公开(公告)号：US06832018B2
公开(公告)日：2004-12-14
申请号：US10136223
申请日：2002-04-30
申请人： Mustafa Abushagur
发明人： Mustafa Abushagur
IPC分类号： G02B628
CPC分类号： G02B6/2938 , G02B6/29365 , G02B6/29395
摘要： A dynamically reconfigurable optical add/drop multiplexer makes use of a single or a plurality of optical narrowband filters and a single or plurality of actuated optical devices to re-map the optical beams through the filter/s to drop and/or add a light of one wavelength. The input optical beam may be composed of a plurality of wavelengths. The beam as it impinges on the narrowband filter is reflected except for a single wavelength that passes through. The reflected beam can either be directed to couple the light to output ports or reflected to impinge on another filter to pass another wavelength and reflect the rest of the wavelengths. This can be repeated to drop a plurality of wavelengths individually. Adding a wavelength to the beam may be introduced at the filter where that specific wavelength is dropped to pass through the filter and join the reflected beam. This also is repeated for adding a plurality of wavelengths. This invention can be used to drop/add bands of wavelengths.
摘要翻译：动态可重新配置的光分插复用器利用单个或多个光学窄带滤波器和单个或多个致动的光学装置来重新映射通过滤波器的光束以丢弃和/或添加光一个波长。输入光束可以由多个波长组成。射入窄带滤波器的光束除了通过的单个波长外都被反射。反射光束可以被引导以将光耦合到输出端口或被反射以照射到另一滤光器上以通过另一波长并反射其余的波长。这可以重复以单独地丢弃多个波长。在波长处加入波长可以在滤波器处引入特定波长，以通过滤波器并连接反射光束。对于添加多个波长也是重复的。本发明可用于降低/增加波段。

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