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    • 2. 发明授权
    • Optical waveguide device for wavelength demultiplexing and waveguide
crossing
    • 用于波长解复用和波导交叉的光波导器件
    • US5894535A
    • 1999-04-13
    • US852368
    • 1997-05-07
    • Brian E. LemoffLewis B. Aronson
    • Brian E. LemoffLewis B. Aronson
    • G02B6/12G02B6/122G02B6/125G02B6/34G02B6/42G02B6/26
    • G02B6/29367G02B6/125G02B6/2938G02B6/4246G02B2006/12195G02B6/4204G02B6/4214
    • A zigzag waveguide device is described that includes at least two optical waveguides converged at a vertex to form a waveguide overlap region. Optical loss in the waveguide overlap region is minimized by including a narrow gap of lower refractive index between the overlap region and each waveguide. This technique is also applied to minimize loss in a region where two optical waveguides cross one another. A mirror or optical filter reflectively couples the two waveguides at the vertex. When the coupling is provided by an optical filter, some range of wavelengths is transmitted out of the zigzag waveguide device, rather than reflected. The transmitted light may be collected by an output waveguide which is wider than the waveguides to minimize loss due to divergence. Light exiting the device may be coupled directly to a photodetector with no intervening optical fiber. In addition, the width of an input waveguide of the zigzag waveguide device is tapered to reduce angular spread of the light in the zigzag device.
    • 描述了一种锯齿状波导器件,其包括在顶点会聚的至少两个光波导,以形成波导重叠区域。 通过在重叠区域和每个波导之间包括较低折射率的窄间隙,使波导重叠区域中的光学损耗最小化。 该技术也被应用于使两个光波导彼此交叉的区域中的损耗最小化。 反射镜或滤光器在顶点反射耦合两个波导。 当耦合由滤光器提供时,一些波长范围从锯齿形波导器件传出,而不是被反射。 透射光可以由比波导更宽的输出波导收集,以最小化由于发散引起的损耗。 离开器件的光可以直接耦合到没有中间光纤的光电检测器。 此外,之字形波导器件的输入波导的宽度是锥形的,以减少光在锯齿形器件中的角度扩展。
    • 3. 发明授权
    • Parallel fiber-fan-out optical interconnect for fiber optic system
    • 用于光纤系统的并行光纤扇出光互连
    • US06931195B2
    • 2005-08-16
    • US10635719
    • 2003-08-05
    • Brian E. Lemoff
    • Brian E. Lemoff
    • G02B6/04G02B6/42G02B6/44G02B6/00
    • G02B6/4471G02B6/4249
    • A fiber ribbon includes a plurality of first segments of optical fibers that extend in a planar side-by-side arrangement having a first predetermined pitch. A fiber-fan-out including a plurality of second segments of the optical fibers extends in a diverging arrangement from the fiber ribbon. A fiber holder extends across the plurality of second segments of the optical fibers for maintaining a plurality of terminal portions of the second segments in a second predetermined pitch that is greater than the first predetermined pitch so that the terminal portions can each be optically coupled to a corresponding optical subassembly (OSA) of a plurality of OSAs arranged in a linear array. An alternate embodiment uses a second fiber holder in place of the fiber ribbon. The holders can be replaced with a common housing assembly spanning all but the terminal portions of the optical fibers.
    • 光纤带包括多个第一光纤段,它们以具有第一预定间距的平面并排布置延伸。 包括光纤的多个第二段的光纤扇出部分从光纤带以分散布置延伸。 光纤保持器延伸穿过光纤的多个第二段,用于将第二段的多个端子部分保持在大于第一预定间距的第二预定间距中,使得端子部分可以各自光耦合到 以线性阵列排列的多个OSA的对应的光学子组件(OSA)。 替代实施例使用第二光纤保持器代替光纤带。 保持器可以用跨越除了光纤的端子部分之外的所有的公共壳体组件来替换。
    • 4. 发明授权
    • Switching using three-dimensional rewriteable waveguide in photosensitive media
    • 在光敏介质中切换使用三维可重写波导
    • US06785439B2
    • 2004-08-31
    • US10060512
    • 2002-01-29
    • Charles D. HokeBrian E. Lemoff
    • Charles D. HokeBrian E. Lemoff
    • G02B6026
    • G02B6/3596G02B6/3556G02F1/293
    • A three-dimensional optical switch using three-dimensional rewritable waveguides in a photosensitive substrate. At least two light beams are used to illuminate the substrate in the region where the waveguide is to be written. The refractive index of the substrate changes at the points where the beams intersect. Therefore, the light beams can be directed to create a three-dimensional waveguide in the photosensitive substrate. A plurality of inlet ports in one surface of the substrate are thereby connected to a plurality of outlet ports on another surface of the substrate. Alternatively, the inlet ports and the outlet ports may be on the same surface of the substrate. The invention also provides methods of creating waveguides in photosensitive media using the device described herein.
    • 在感光基片中使用三维可重写波导的三维光学开关。 使用至少两束光束来照射波导要被写入的区域中的衬底。 基板的折射率在光束相交的点处变化。 因此,可以引导光束以在感光基板中产生三维波导。 因此,衬底的一个表面中的多个入口端口连接到衬底的另一表面上的多个出口。 或者,入口端口和出口可以在基板的相同表面上。 本发明还提供了使用本文所述的装置在光敏介质中产生波导的方法。
    • 8. 发明授权
    • Wavelength division multiplexing receiver for wavelength tracking
    • 用于波长跟踪的波分复用接收器
    • US07050719B2
    • 2006-05-23
    • US10223780
    • 2002-08-19
    • Brian E. LemoffFrank H. Peters
    • Brian E. LemoffFrank H. Peters
    • H04J14/02
    • H04J14/02
    • The WDM receiver includes a wavelength demultiplexer, a detector array and a signal extractor. The wavelength demultiplexer receives an n-channel optical input signal and transmits the n-channel optical input signal to m optical outputs. Each of the optical outputs receives a wavelength band centered at a different wavelength. The wavelength bands have a center-to-center wavelength spacing of Δλ′. The detector array is composed of m detector elements coupled to the wavelength demultiplexer. Each of the detector elements generates a detection signal in response to light received from one of the optical outputs of the wavelength demultiplexer. The signal extractor receives the detection signals from the detector array and converts the detection signals to an n-channel receiver output signal, each channel of which corresponds to a different one of the n channels of the optical input signal. The WDM receiver is able to detect optical signals that are closely spaced in wavelength, even when the optical signals have off-center of varying wavelengths.
    • WDM接收机包括波长解复用器,检测器阵列和信号提取器。 波长解复用器接收n沟道光输入信号,并将n沟道光输入信号发送到m个光输出。 每个光学输出接收以不同波长为中心的波长带。 波长带具有Deltalambda的中心到中心的波长间隔。 检测器阵列由耦合到波长解复用器的m个检测器元件组成。 每个检测器元件响应于从波长解复用器的光输出之一接收的光产生检测信号。 信号提取器从检测器阵列接收检测信号,并将检测信号转换成n沟道接收器输出信号,每个通道对应于光输入信号的n个通道中的不同通道。 即使当光信号具有不同波长的偏心时,WDM接收机能够检测到波长紧密间隔的光信号。