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    • 3. 发明授权
    • Interferometric switch
    • 干涉式开关
    • US5703975A
    • 1997-12-30
    • US672188
    • 1996-06-27
    • William J. MillerDaniel A. Nolan
    • William J. MillerDaniel A. Nolan
    • G02B6/122G02B6/12G02B6/26G02B6/28G02B6/287G02B6/34G02F1/313G02F1/35G02F1/365
    • G02F1/3517G02F1/3136G02B2006/12145G02B6/2835G02B6/29352G02F1/3131
    • A compact monolithic interferometric switch such as a Mach-Zehnder switch is formed such that one of the waveguide paths between the input and output couplers contains a material having exhibits a resonant nonlinearity, whereby its refractive index changes when pump power propagates through it. Each of the waveguide paths has a different propagation constant whereby signal light is subjected to a different delay in each path when no pump power is propagating through the rare nonlinear path. An input signal applied to the input of the switch appears at a first output terminal when the pump power does not propagate through the nonlinear path, and it appears at a second output terminal when the pump power is applied to the nonlinear path. Switching occurs at relatively low levels of pump power.
    • 形成诸如Mach-Zehnder开关的紧凑型单片干涉式开关,使得输入和输出耦合器之间的一条波导路径包含具有共振非线性的材料,由此当泵浦功率传播通过其时,其折射率改变。 每个波导路径具有不同的传播常数,由此当没有泵功率传播通过罕见的非线性路径时,信号光在每个路径中经受不同的延迟。 当泵浦功率不通过非线性路径时,施加到开关输入端的输入信号出现在第一输出端子处,并且当泵浦功率被施加到非线性路径时,其出现在第二输出端子处。 切换发生在泵功率相对较低的水平。
    • 4. 发明授权
    • MxO multiplex demultiplex component
    • MxO多路复用分量分量
    • US5636300A
    • 1997-06-03
    • US353822
    • 1994-12-12
    • Donald B. KeckWilliam J. MillerDaniel A. Nolan
    • Donald B. KeckWilliam J. MillerDaniel A. Nolan
    • G02B6/28G02B6/34H04J14/08
    • G02B6/12011
    • An M.times.O multiplex/demultiplex device is disclosed. An M.times.N coupler is connected to an N.times.O coupler by phase shifting means. The phase shifting means provide N paths between the couplers, each path having an optical path length different from every other optical path length. The coupling region of the M.times.N coupler must provide for substantially uniform division of light power among the coupler branches when M are the launch ports. Similarly, the coupling region of the N.times.O coupler must provide for substantially uniform division of light power among the coupler branches when O are the launch ports. A preferred embodiment includes two fused waveguide fiber couplers with dissimilar waveguide fibers used as the phase shifting means.
    • 公开了一种MxO复用/解复用器件。 MxN耦合器通过相移装置连接到NxO耦合器。 相移装置在耦合器之间提供N个路径,每个路径具有不同于每个其它光路长度的光路长度。 当M是发射端口时,MxN耦合器的耦合区域必须在耦合器分支之间提供基本均匀的光功率划分。 类似地,当O是发射端口时,NxO耦合器的耦合区域必须在耦合器分支之间提供基本上均匀的光功率划分。 优选实施例包括具有用作相移装置的不同波导纤维的两个熔接波导光纤耦合器。
    • 9. 发明授权
    • Narrow band Mach-Zehnder filter
    • 窄带马赫 - 曾德滤器
    • US5351325A
    • 1994-09-27
    • US52523
    • 1993-04-29
    • William J. MillerDaniel A. Nolan
    • William J. MillerDaniel A. Nolan
    • G02B5/28G02B6/28G02B6/34H04B10/02G02B6/26G01B9/02
    • G02B6/29355G02B6/2856G02B6/2861G02B6/29332
    • A Mach-Zehnder filter includes an input coupler for splitting an input signal into N equal output signals, where N>2, and a signal combining coupler for combining N optical signals into a single output signal. It further includes N optical waveguide fibers for connecting the N outputs from the input coupler to the signal combining coupler. Each of the N optical fibers subjects the light propagating therethrough to a delay that is different from the delay experienced by light propagating through each of the other optical fibers. This Mach-Zehnder filter exhibits greater finesse per stage than previous Mach-Zehnder devices, finesse being the ratio of the wavelength separation between adjacent peaks to the peak widths.
    • 马赫 - 曾德滤波器包括一个输入耦合器,用于将输入信号分成N个等于N≥2的输出信号,以及用于将N个光信号组合成单个输出信号的信号组合耦合器。 它还包括用于将来自输入耦合器的N个输出连接到信号组合耦合器的N个光波导光纤。 N个光纤中的每一个使通过其传播的光使延迟不同于通过每个其它光纤传播的光所经历的延迟。 该Mach-Zehnder过滤器比以前的Mach-Zehnder设备具有更高的每个阶段的精细度,其优点是相邻峰值之间的波长间隔与峰值宽度的比值。