Selectable wavelength channel filter for optical WDM systems
    91.
    发明授权
    Selectable wavelength channel filter for optical WDM systems 失效
    用于光学WDM系统的可选波长通道滤波器

    公开(公告)号:US06549701B1

    公开(公告)日:2003-04-15

    申请号:US09014148

    申请日:1998-01-27

    IPC分类号: G02B626

    摘要: A filter for generating an output light signal having one or more output spectral lines selected from a plurality of potential spectral lines contained in an input light signal. The filter includes a channel filter for filtering the input light signal to create a notched light signal having a spectrum devoid of light at a first wavelength. The filter also includes a variable wavelength reflector for reflecting light having a wavelength equal to a reflection wavelength, the reflection wavelength being selectable from the first wavelength and a second wavelength equal to the wavelength of one of the spectral lines. The output of the channel filter is coupled to the input of the variable wavelength reflector. The output of the variable wavelength reflector includes the output light signal. The channel filter can be constructed using a number of known optical components such as fiber Bragg reflectors, array waveguide filters, Mach Zehnder filters, or absorption filters. The variable frequency reflector is preferably constructed from one or more variable frequency fiber Bragg reflectors.

    摘要翻译: 一种滤波器,用于产生具有从包含在输入光信号中的多个电位谱线中选出的一个或多个输出光谱线的输出光信号。 滤波器包括用于对输入光信号进行滤波以产生具有第一波长的没有光的光谱的陷波光信号的通道滤波器。 滤波器还包括可变波长反射器,用于反射具有等于反射波长的波长的光,反射波长可从第一波长选择,第二波长可以等于其中一条光谱线的波长。 通道滤波器的输出耦合到可变波长反射器的输入端。 可变波长反射器的输出包括输出光信号。 信道滤波器可以使用许多已知的光学部件来构造,例如光纤布拉格反射器,阵列波导滤波器,马赫曾德滤波器或吸收滤波器。 可变频反射器优选地由一个或多个可变频率光纤布拉格反射器构成。

    Add/drop acousto-optic filter
    93.
    发明授权
    Add/drop acousto-optic filter 有权
    添加/关闭声光滤波器

    公开(公告)号:US06357913B1

    公开(公告)日:2002-03-19

    申请号:US09577197

    申请日:2000-05-23

    IPC分类号: G02B642

    摘要: A drop AOTF has a first AOTF that includes an optical fiber with a longitudinal axis, an acoustic wave propagation member with a proximal end and a distal end and an acoustic wave propagation member. The acoustic wave propagation member propagating an acoustic wave from the proximal to the distal end of the acoustic wave propagation member. An optical circulator, with first, second and third ports, is coupled to the first AOTF at the third port. A mode coupler is coupled to the first AOTF. A orthogonal-polarization reflective mirror is coupled to the mode coupler.

    摘要翻译: 一滴AOTF具有包括具有纵向轴线的光纤,具有近端和远端的声波传播部件和声波传播部件的第一AOTF。 声波传播部件将声波从声波传播部件的近端传播到远端。 具有第一,第二和第三端口的光循环器在第三端口处耦合到第一AOTF。 模式耦合器耦合到第一AOTF。 正交偏振反射镜耦合到模式耦合器。

    Method and apparatus for independently measuring the thickness and index
of refraction of films using low coherence reflectometry
    94.
    发明授权
    Method and apparatus for independently measuring the thickness and index of refraction of films using low coherence reflectometry 失效
    用于使用低相干反射测量法独立测量膜的折射厚度和折射率的方法和装置

    公开(公告)号:US5646734A

    公开(公告)日:1997-07-08

    申请号:US520200

    申请日:1995-08-28

    IPC分类号: G01B11/06 G01N21/45 G01B9/02

    CPC分类号: G01B11/06

    摘要: An apparatus and method for measuring the thickness of a film having top and bottom surfaces. The apparatus includes a first coupler for generating a first probe light signal and a second probe light signal from a low coherence light source. The first probe light signal is directed toward the top surface of the film at a first angle of incidence and the light leaving the top surface of the film is collected. Similarly, the second probe light signal is directed toward the top surface of the film at a second angle of incidence different from said first angle of incidence and the light leaving the top surface of the film is also collected. The collected light is combined to form a collected light signal which is input to a receiver that determines the time delay between light reflected from the top and bottom surfaces of the film. In the preferred embodiment of the present invention, the receiver is constructed from an optical autocorrelator or an optical spectrum analyzer that includes circuitry for providing the Fourier transform of the frequency domain spectrum measured from the combined light signal.

    摘要翻译: 一种用于测量具有顶表面和底表面的膜的厚度的装置和方法。 该装置包括用于产生第一探针光信号的第一耦合器和来自低相干光源的第二探测光信号。 第一探针光信号以第一入射角指向膜的顶表面,并且收集离开膜的顶表面的光。 类似地,第二探测光信号以不同于所述第一入射角的第二入射角指向膜的顶表面,并且还收集离开膜顶表面的光。 收集的光被组合以形成收集的光信号,其被输入到确定从膜的顶表面和底表面反射的光之间的时间延迟的接收器。 在本发明的优选实施例中,接收机由光学自相关器或光谱分析仪构成,光谱分析仪包括用于提供从组合的光信号测量的频域频谱的傅里叶变换的电路。

    Apparatus and method for initializing an optical-fiber laser for mode
locking
    95.
    发明授权
    Apparatus and method for initializing an optical-fiber laser for mode locking 失效
    用于初始化用于模式锁定的光纤激光器的装置和方法

    公开(公告)号:US5365531A

    公开(公告)日:1994-11-15

    申请号:US980896

    申请日:1992-11-24

    摘要: A figure-8 loop laser having a controllable phase shifter in a Sagnac loop (non-linear amplifying loop mirror). A half-wave plate in series with Faraday optical rotators provide a switchable non-reciprocal 180-degree phase shifter that allows the birefringence of the fiber loop to be adjusted during continuous wave operation. The phase shifter is activated during continuous wave operation to find a minimum threshold and then is turned off, placing the laser in optimum state for mode locking.

    摘要翻译: 在Sagnac环路(非线性放大环路镜)中具有可控移相器的图8环形激光器。 与法拉第光学旋转器串联的半波片提供可切换的非互易180度移相器,允许在连续波动操作期间调节光纤回路的双折射。 在连续波操作期间,移相器被激活以找到最小阈值,然后关闭,将激光器置于模式锁定的最佳状态。

    Extended distance range optical low-coherence reflectometer
    96.
    发明授权
    Extended distance range optical low-coherence reflectometer 失效
    扩展距离范围光学低相干反射计

    公开(公告)号:US5268738A

    公开(公告)日:1993-12-07

    申请号:US907765

    申请日:1992-06-30

    IPC分类号: G01B9/02 G01M11/00 G41B9/02

    CPC分类号: G01M11/3172

    摘要: An improved optical low-coherence reflectometer is disclosed for use in measuring the strength and location of optical reflections. The invention utilizes a reference signal comprising multiple copies of a light signal to increase the range of distance measurements over which the reflectometer operates. Each copy of the light signal is delayed by a different amount. Embodiments in which the copies are generated with a ring resonator, a Fabry-Perot cavity, and multiple fiber delay lines are described.

    摘要翻译: 公开了改进的光学低相干反射计用于测量光学反射的强度和位置。 本发明利用包括光信号的多个副本的参考信号来增加反射计在其上操作的距离测量的范围。 光信号的每个副本被延迟不同的量。 描述了使用环形谐振器,法布里 - 珀罗腔和多个光纤延迟线产生副本的实施例。

    Polarization independent optical coherence-domain reflectometry
    97.
    发明授权
    Polarization independent optical coherence-domain reflectometry 失效
    偏振独立光学相干域反射测量

    公开(公告)号:US5202745A

    公开(公告)日:1993-04-13

    申请号:US844905

    申请日:1992-03-02

    IPC分类号: G01B9/02 G01M11/00

    摘要: An optical coherence-domain reflectometry system provides an interferometer driven by a broadband incoherent light source with the device under test connected to one arm of the interferometer and a movable scanning mirror in the other arm providing a reference signal. The mirror moves at a controlled velocity to produce a Doppler shift in the reference signal frequency. The reference signal arm also includes a piezoelectric transducer which modulates the phase of the reference signal at a given frequency, causing a further shift in the reference signal frequency. The interference signal is detected and measured by a polarization diversity receiver. A linear polarizer in the reference signal arm is adjusted to produce equal reference signal powers in each arm of the polarization diversity receiver in the absence of a reflection signal from the test arm. The measured reflectometry signal is substantially independent of the state of polarization of the reflected signal from the device under test.

    摘要翻译: 光学相干域反射系统提供由宽带非相干光源驱动的干涉仪,被测器件连接到干涉仪的一个臂,另一个臂上的可移动扫描镜提供参考信号。 镜子以受控的速度移动,以产生参考信号频率的多普勒频移。 参考信号臂还包括压电换能器,其在给定频率下调制参考信号的相位,导致参考信号频率的进一步移位。 干扰信号由偏振分集接收器检测和测量。 在不存在来自测试臂的反射信号的情况下,参考信号臂中的线性偏振器被调整以在偏振分集接收器的每个臂中产生相等的参考信号功率。 所测量的反射信号基本上与被测器件的反射信号的偏振状态无关。

    HYBRID NETWORK OPTICAL COMMUNICATION SYSTEM
    98.
    发明申请
    HYBRID NETWORK OPTICAL COMMUNICATION SYSTEM 审中-公开
    混合网络光通信系统

    公开(公告)号:US20100008669A1

    公开(公告)日:2010-01-14

    申请号:US12499922

    申请日:2009-07-09

    IPC分类号: H04J14/00

    CPC分类号: H04J14/0282 H04J14/0283

    摘要: A hybrid network optical communication system is provided. The system may include a central office, at least one network group coupled to the central office. The network group may include a plurality of external rings, and each of the external rings may include a plurality of nodes having a ring connection. This system may have economical advantages of reducing the number of optical cores and easily switching directions for protecting the system when any problems occur on the optical cores and the devices at nodes.

    摘要翻译: 提供了一种混合网络光通信系统。 系统可以包括中心局,耦合到中心局的至少一个网络组。 网络组可以包括多个外部环,并且每个外部环可以包括具有环形连接的多个节点。 当在光核心和节点上的设备出现任何问题时,该系统可以具有减少光核数量和容易切换方向的经济优点。

    Periodically filtered broadband light source
    99.
    发明申请
    Periodically filtered broadband light source 有权
    定期滤波宽带光源

    公开(公告)号:US20080231943A1

    公开(公告)日:2008-09-25

    申请号:US11726803

    申请日:2007-03-22

    IPC分类号: H01S3/00

    CPC分类号: H04B10/506 H04J14/0282

    摘要: Embodiments of a periodically filtered broadband light source are described. The periodically filtered broadband light source includes a periodic spectral filter coupled to an optical gain element to generate a light and to filter the light into a plurality of individual spectral slices. The broadband light source includes an isolator coupled to the optical gain element. The periodic filter can be a reflective filter. The periodic filter can adjust an optical power in each of the spectral slices. The periodic filter can include one or more control elements to control an optical power in each of the spectral slices. Further, a wavelength division multiplexing passive optical network system is described that includes the periodic broadband light source to send individual spectral slices to wavelength lock one or more transceivers. The individual spectral slices sent by the periodic broadband light source match wavelength channels of a wavelength division multiplexer/de-multiplexer.

    摘要翻译: 描述周期性过滤的宽带光源的实施例。 周期性滤波的宽带光源包括耦合到光学增益元件的周期性光谱滤波器以产生光并将光过滤成多个单独的光谱切片。 宽带光源包括耦合到光增益元件的隔离器。 周期滤波器可以是反射滤波器。 周期滤波器可以调整每个光谱片中的光功率。 周期滤波器可以包括一个或多个控制元件以控制每个频谱切片中的光功率。 此外,描述了波分复用无源光网络系统,其包括周期性宽带光源以发送单个光谱片以波长锁定一个或多个收发器。 由周期性宽带光源发送的各个光谱片段与波分复用器/去多路复用器的波长信道相匹配。

    Open access service model using WDM-PON
    100.
    发明申请
    Open access service model using WDM-PON 失效
    使用WDM-PON的开放接入业务模型

    公开(公告)号:US20080019693A1

    公开(公告)日:2008-01-24

    申请号:US11489396

    申请日:2006-07-18

    申请人: Wayne V. Sorin

    发明人: Wayne V. Sorin

    IPC分类号: H04J14/00

    CPC分类号: H04Q11/0067 H04Q2011/0079

    摘要: Methods and apparatuses to provide an “Open access” service model using wavelength division multiplexing (“WDM”) passive optical networks (“PONs”) are described. A cross-connect is used to supply a first set of optical signals corresponding to a first service provider and a second set of optical signals corresponding to a second service provider to a WDM multiplexer/demultiplexer. The WDM multiplexer/de-multiplexer is used to multiplex and transmit the first set and the second set to a remote location. Another WDM multiplexer/de-multiplexer at the remote location is used to de-multiplex the first set and the second set. The first set may be supplied to a first user and the second set may be supplied to a second user. Transceivers coupled to the cross-connect may be used to generate the optical signals. For one embodiment, the transceivers include a wavelength-locked light source. For one embodiment, the transceivers are alike.

    摘要翻译: 描述了使用波分复用(“WDM”)无源光网络(“PON”)来提供“开放接入”服务模型的方法和装置。 交叉连接用于将对应于第一服务提供商的第一组光信号和对应于第二服务提供商的第二组光信号提供给WDM多路复用器/解复用器。 WDM多路复用器/解复用器用于将第一组和第二组复用并传输到远程位置。 远程位置处的另一个WDM多路复用器/去多路复用器用于对第一组和第二组进行解复用。 可以将第一组提供给第一用户,并且第二组可以被提供给第二用户。 耦合到交叉连接的收发器可以用于产生光信号。 对于一个实施例,收发器包括波长锁定光源。 对于一个实施例,收发器是相似的。