公开(公告)号：US6141130A

公开(公告)日：2000-10-31

申请号：US7174

申请日：1998-01-14

Applicant: Joseph Ip

Inventor： Joseph Ip

IPC: H04B10/2507 ,  H04B10/294 ,  H04B10/16

CPC classification number: H04B10/2941 ,  H04B10/25073

Abstract: An optical element having a periodically varying spectral response is used to flatten the spectral amplitudes within each of a group of multiplexed channels having different predetermined central wavelengths with uneven spectral amplitudes peaked around the central wavelengths. Spectral equalization is achieved by having the amplitude valleys of the spectral response aligned individually with the different central wavelengths. The optical element comprises an optical cavity, which forms part of a low-finesse Fabry-Perot etalon.

Abstract translation: 具有周期性变化的光谱响应的光学元件用于使具有不同预定中心波长的一组多路复用通道中的每一个中的频谱振幅平坦化，其中不均匀的光谱振幅在中心波长周围达到峰值。 通过使光谱响应的幅度谷分别与不同的中心波长对准来实现光谱均衡。 该光学元件包括一个光学腔，它形成低巧合法布里 - 珀罗标准具的一部分。

公开(公告)号：US5612824A

公开(公告)日：1997-03-18

申请号：US442365

申请日：1995-05-16

Applicant: Y. Calvin Si ,  Gary S. Duck ,  Joseph Ip ,  Neil Teitelbaum

Inventor： Y. Calvin Si ,  Gary S. Duck ,  Joseph Ip ,  Neil Teitelbaum

IPC: G02B5/20 ,  G02B5/28 ,  G02B6/18

CPC classification number: G02B3/0087 ,  G02B27/141 ,  G02B6/02038 ,  G02B6/2937

Abstract: An optical filter is provided having first and second graded index (GRIN) lenses preferably disposed in a coaxial relationship so that they have a common optical axis. Each of the GRIN lenses have an endface providing a port at predetermined location. The ports are disposed on opposite sides of the optical axis and each of the ports are substantially equidistant from the optical axis, so as to be oppositely offset from the optical axis by a same amount. The filter also includes an optical interference filter disposed between other endfaces of the first and second graded index lenses. By changing the location of the ports by a same small amount, the center wavelength of the filter changes by a small amount, thus in manufacture, the filter is tunable. After tuning the filter to a desired wavelength, the locations of the ports are fixed.

Abstract translation: 提供一种滤光器，其具有优选以同轴关系布置的第一和第二渐变折射率（GRIN）透镜，使得它们具有共同的光轴。 每个GRIN透镜都具有在预定位置提供端口的端面。 端口设置在光轴的相对侧上，并且每个端口基本上与光轴等距，从而与光轴相反地偏移相同的量。 滤光器还包括设置在第一和第二渐变折射率透镜的其它端面之间的光学干涉滤光器。 通过改变端口的位置相同的少量，滤波器的中心波长变化很小，因此在制造过程中，滤波器是可调谐的。 在将滤波器调谐到所需波长之后，端口的位置是固定的。

公开(公告)号：US5608825A

公开(公告)日：1997-03-04

申请号：US595561

申请日：1996-02-01

Applicant: Joseph Ip

Inventor： Joseph Ip

IPC: G02B6/293 ,  G02B6/34 ,  H04B10/02 ,  H04J14/00 ,  H04J14/02 ,  G02B6/28

CPC classification number: G02B6/2932 ,  H04J14/0209 ,  H04J14/0213

Abstract: A multi-wavelength optical filtering device for optical signal transmission, capable for functioning as a multiplexer or a demultiplexer. The device has at least one (first) optical circulator having at least four ports including an input port and a plurality of sequential ports, the last of said sequential ports being an output port, and an in-fiber Bragg grating (wavelength selective means) coupled to each of said sequential ports except said output port. The circulator may be branched off to a number of other circulators, the number depending on the number of the sequential ports of the first circulator, through the Bragg grating rather than through the output port of the first circulator. The other circulators, which are preferably also at least four-port circulators with wavelength selective means at the sequential ports, can also be branched off in an analogous manner as the first circulator. The device allows a reduction of signal losses in optical signal transmission due to the passing of a signal between circulator ports.

Abstract translation: 一种用于光信号传输的多波长光学滤波装置，能够用作多路复用器或解复用器。 该装置具有至少一个（第一）光循环器，其具有包括输入端口和多个顺序端口的至少四个端口，所述顺序端口中的最后一个是输出端口，以及光纤内布拉格光栅（波长选择装置） 耦合到除了​​所述输出端口之外的每个所述顺序端口。 循环器可以通过布拉格光栅而不是通过第一循环器的输出端口分支到多个其它循环器，数量取决于第一循环器的顺序端口的数量。 优选地也是在顺序端口处具有波长选择装置的至少四端口循环器的其它循环器也可以以与第一循环器类似的方式分支。 该装置允许由于在循环器端口之间传递信号而减少光信号传输中的信号损失。

公开(公告)号：US5798859A

公开(公告)日：1998-08-25

申请号：US666229

申请日：1996-06-20

Applicant: Paul Colbourne ,  Joseph Ip ,  Neil Teitelbaum

Inventor： Paul Colbourne ,  Joseph Ip ,  Neil Teitelbaum

IPC: G01J3/26 ,  G01J9/02 ,  G02B27/14 ,  G02F1/21 ,  H01S3/13 ,  H01S3/139 ,  H01S5/0687 ,  G02F1/03 ,  G01B9/02

CPC classification number: G02B27/144 ,  G01J3/0259 ,  G01J3/26 ,  G01J9/0246 ,  G02B27/145 ,  G02F1/21 ,  H01S3/13 ,  H01S3/1392 ,  H01S5/0687 ,  H01S3/1305

Abstract: A method and device for wavelength locking is provided, wherein an element having a wavelength dependent characteristic such as a Fabry Perot etalon is used to provide an output signal having an intensity that varies with wavelength. The intensity of a reference signal derived from an input signal is compared with an output from the Fabry Perot etalon to provide a feedback signal that corresponds to the frequency of the input signal. The system is calibrated before wavelength locking is performed to determine a ratio of intensities that determines a locked state or condition.

Abstract translation: 提供了一种用于波长锁定的方法和装置，其中使用诸如法布里珀罗标准具的波长相关特性的元件来提供具有随波长变化的强度的输出信号。 将从输入信号导出的参考信号的强度与法布里珀罗标准具的输出进行比较，以提供对应于输入信号的频率的反馈信号。 在执行波长锁定之前校准系统以确定确定锁定状态或状况的强度比。

公开(公告)号：US5557468A

公开(公告)日：1996-09-17

申请号：US442367

申请日：1995-05-16

Applicant: Joseph Ip

Inventor： Joseph Ip

IPC: G01J3/26 ,  G02B26/02 ,  G02B27/00 ,  H04B10/18 ,  G02B5/04

CPC classification number: H04B10/25133 ,  G01J3/26 ,  G02B26/02 ,  G02B27/0025

Abstract: A chromatic dispersion compensation device is provided in the form of an etalon having first partially reflecting mirror providing an input and output port for porting a signal into and out of the etalon cavity. A second partially reflective mirror parallel to and spaced apart from the first mirror, being more reflective than the first mirror provides a monitoring port for monitoring energy within the cavity. Means are optionally provided for controlling a parameter related to the cavity in dependence upon a signal ported from the monitoring port. Means may be provided to control a transmitting laser in dependence upon the signal ported from the monitoring port.

Abstract translation: 以标准具的形式提供色散补偿装置，其具有第一部分反射镜，其提供输入和输出端口，用于将信号移入和移出标准具腔。 平行于第一反射镜并与第一反射镜间隔开的第二部分反射镜比第一反射镜更具反射性，提供用于监测空腔内的能量的监视端口。 可选地提供了用于根据从监视端口输入的信号来控制与腔相关的参数的装置。 可以提供装置以根据从监视端口输入的信号来控制发射激光。

公开(公告)号：US6040932A

公开(公告)日：2000-03-21

申请号：US864895

申请日：1997-05-29

Applicant: Gary S. Duck ,  Koichi Abe ,  Joseph Ip ,  Mark Farries ,  Paul Colbourne

Inventor： Gary S. Duck ,  Koichi Abe ,  Joseph Ip ,  Mark Farries ,  Paul Colbourne

IPC: G02B6/34 ,  H04J14/02

CPC classification number: G02B6/2938 ,  G02B6/29358 ,  H04J14/02 ,  H04J14/0208 ,  H04J14/0213 ,  G02B6/2937

Abstract: A system and method are disclosed for demulitplexing closely spaced channels carrying optically encoded data. A composite optical signal having data channels corresponding to center wavelengths .lambda.1, .lambda.2, .lambda.3, .lambda.4, . . . .lambda.n are separated into two composite optical signals of first of which comprises data channels corresponding to center wavelengths .lambda.1, .lambda.3, . . . .lambda.n and a second which comprises data channels corresponding to center wavelengths .lambda.2, .lambda.4, . . . .lambda.n-1, wherein adjacent channels center wavelengths are separated from one another by a distance "d". A periodic multi-cavity Fabry-Perot etalon having a free spectral range of "2d" is coupled to a circulator for launching an input beam. The first of the two composite optical signals carrying channels 1, 3, . . . n is reflected from the input port of the etalon and the second of the of the two optical signals carrying channels 2, 4, . . . n-1 is transmitted through the etalon. After the two signals are separated, further separation can be achieved by using conventional dichroic filters.

Abstract translation: 公开了用于对携带光学编码数据的紧密间隔的通道进行去复用的系统和方法。 具有对应于中心波长λ1，λ2，λ3，λ4的数据信道的复合光信号。 。 。 λn被分成两个复合光信号，其中第一个信号包括对应于中心波长λ1，λ3的数据信道。 。 。 λn和第二个，其包括对应于中心波长λ2，λ4的数据信道。 。 。 λn-1，其中相邻信道中心波长彼此分开距离“d”。 具有“2d”的自由光谱范围的周期性多腔Fabry-Per + E，cir o + EE信号被耦合到用于发射输入光束的循环器。 两个复合光信号中的第一个传送通道1，3，...。 。 。 n从标准具的输入端口反射，并且两个光信号中的第二个传送通道2,4。 。 。 n-1通过标准信号传输。 在两个信号分离之后，可以通过使用传统的二向色滤光片来实现进一步的分离。

公开(公告)号：US5909295A

公开(公告)日：1999-06-01

申请号：US743733

申请日：1996-11-06

Applicant: Jinghui Li ,  Mark Farries ,  Joseph Ip

Inventor： Jinghui Li ,  Mark Farries ,  Joseph Ip

IPC: G02B6/34 ,  G02B6/00

CPC classification number: G02B6/2932 ,  G02B6/29362 ,  G02B6/2938

Abstract: An optical device simultaneously provides a multiplexing and demultiplexing function and combines dichroic WDM filter technology with Bragg grating filter technology. A plurality of adjacent sequential ports of a multi-port optical circulator serve as a vehicle for launching and receiving a multi-wavelength optical signal to be separated by the Bragg and dichroic filters. Other adjacent sequential ports having similar filters tuned to different wavelengths provide paths for combining the other wavelengths of light into a single signal. Conveniently a single circulating port serves as the input/output port of the device. The configuration can be applied an optical waveguide structure and, or more particularly to an optical fiber structure. Furthermore this configuration can combine multiplexing/demultiplexing function with a dispersion compensation function by adding a group of fiber Bragg gratings to a port of a circulator.

Abstract translation: 光学器件同时提供复用和解复用功能，并将二向色WDM滤波器技术与布拉格光栅滤波器技术相结合。 多端口光循环器的多个相邻顺序端口用作发射和接收由波长和二向色滤光器分离的多波长光信号的载体。 具有调谐到不同波长的类似滤波器的其他相邻顺序端口提供用于将其它波长的光合并成单个信号的路径。 方便地，单个循环端口用作设备的输入/输出端口。 该结构可以应用于光波导结构，或更具体地涉及光纤结构。 此外，该配置可以通过将一组光纤布拉格光栅添加到循环器的端口来将复用/解复用功能与色散补偿功能相结合。

公开(公告)号：US5748363A

公开(公告)日：1998-05-05

申请号：US566442

申请日：1995-11-30

Applicant: Gary Stephan Duck ,  Joseph Ip

Inventor： Gary Stephan Duck ,  Joseph Ip

IPC: G02B6/34 ,  G02B6/42 ,  H01S3/067 ,  H01S3/16 ,  H04B10/17 ,  H01S3/00 ,  G02B6/00 ,  H04B10/16

CPC classification number: G02B6/29317 ,  H01S3/06754 ,  H04B10/2912 ,  H04B10/2971 ,  G02B6/4246 ,  H01S3/06787 ,  H01S3/1608

Abstract: A device in accordance with the invention uses a novel combination of two four port optical circulators, Bragg optical fiber diffraction gratings and a single erbium-doped optical amplifier (EDFA) to implement at least dual wavelength bi-directional (single fiber) optical amplifier module. A system using an amplifier module in accordance with the invention, advantageously allows communication network managers to simultaneously reduce the cost of signal amplification hardware across a fiber optic network, increase fiber utilization, simplify field installation and maintenance operations, and maintain adherence to conventional protection philosophies such as "one system per fiber." Furthermore, the system is tolerant of unwanted effects from back reflections that may be present from a faulty optical connector or a fiber break at either end.

Abstract translation: 根据本发明的装置使用两个四端口光循环器，布拉格光纤衍射光栅和单个掺铒光放大器（EDFA）的新颖组合来实现至少双波长双向（单光纤）光放大器模块 。 使用根据本发明的放大器模块的系统有利地允许通信网络管理者同时降低光纤网络上的信号放大硬件的成本，增加光纤利用率，简化现场安装和维护操作，并保持对传统保护理念的遵守 例如“每个纤维一个系统”。 此外，该系统容忍来自可能存在于故障光连接器或任一端的光纤断裂的后反射的不期望的影响。