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    • 1. 发明申请
    • ARRAYED-WAVEGUIDE GRATING HAVING TAILORED THERMAL-SHIFT CHARACTERISTICS AND AN OPTICAL ASSEMBLY EMPLOYING THE SAME
    • 具有定制的热转移特性的阵列波导光栅和使用其的光学组件
    • US20130101252A1
    • 2013-04-25
    • US13276360
    • 2011-10-19
    • Mahmoud S. RasrasMark P. Earnshaw
    • Mahmoud S. RasrasMark P. Earnshaw
    • G02B6/293
    • G02B6/12014G02B6/12026
    • An arrayed-waveguide grating (AWG) whose thermal-shift characteristics can be tailored to match the corresponding characteristics of another optical device (e.g., a solid-state laser or modulator) to which the AWG is intended to be coupled. In one embodiment, the physical means that enable the match of the thermal-shift characteristics include one or more wedge-shaped structures placed into one or both of the waveguide-coupling regions of the AWG. By appropriately selecting the structure's material, shape, and orientation and also the number of structures, the AWG can be manufactured to have substantially the same thermal-shift coefficient as the other optical device. As a result, the AWG can advantageously remain in optimal spectral alignment with the optical device despite temperature fluctuations and, as such, does not require a thermostat or temperature controller for proper operation.
    • 阵列波导光栅(AWG),其热移动特性可以被调整以匹配AWG旨在耦合到的另一光学装置(例如,固态激光器或调制器)的对应特性。 在一个实施例中,能够匹配热偏移特性的物理装置包括放置在AWG的一个或两个波导耦合区域中的一个或多个楔形结构。 通过适当地选择结构的材料,形状和取向以及结构数量,AWG可被制造成具有与其他光学装置基本上相同的热移动系数。 因此,尽管温度波动,AWG可以有利地保持与光学装置的最佳光谱对准,并且因此不需要用于正常操作的恒温器或温度控制器。
    • 2. 发明授权
    • Thermo-optic waveguide apparatus
    • 热光波导装置
    • US07565038B2
    • 2009-07-21
    • US11700534
    • 2007-01-31
    • Mark P. Earnshaw
    • Mark P. Earnshaw
    • G02F1/01
    • G02F1/0147G02F1/225
    • Apparatus including a waveguide segment having a cladding that surrounds an optically-transmissive core extending along a path; a heater in thermal communication with the waveguide segment along at least a part of the path; a thermally-conductive substrate; a thermally-conductive base in fixed alignment with the waveguide segment and the thermally-conductive substrate, the thermally-conductive base being discontinuously on the waveguide segment along the path; and a rib in fixed alignment with the waveguide segment and the thermally-conductive substrate, the rib transversely extending in a direction away from the waveguide segment at a point along the path. Process utilizing apparatus for generating a phase shift in light.
    • 包括具有包围沿着路径延伸的光学透射芯的包层的波导段的装置; 沿着所述路径的至少一部分与所述波导段热连通的加热器; 导热基板; 与所述波导段和所述导热基板固定对准的导热基体,所述导热基体沿着所述路径不连续地在所述波导段上; 以及与所述波导段和所述导热基板固定对准的肋,所述肋在沿着所述路径的点处在远离所述波导段的方向上横向延伸。 用于在光中产生相移的工艺利用装置。
    • 3. 发明授权
    • Opto-electronic assembly for a line card
    • 用于线卡的光电组件
    • US08787775B2
    • 2014-07-22
    • US12944875
    • 2010-11-12
    • Mark P. Earnshaw
    • Mark P. Earnshaw
    • H04B10/06
    • G02B6/12019G02B6/12004G02B6/4249G02B6/43H01L2224/48091H01L2224/73257H01S5/005H01S5/02252H01S5/02272H01S5/4031H04B10/506H01L2924/00014
    • In one embodiment, the opto-electronic assembly is a hybrid integrated circuit having an array of avalanche photodiodes (APDs) that are electrically coupled to a corresponding array of transimpedance amplifiers (TIAs), with both the APDs and TIAs being mounted on a common ceramic substrate. The opto-electronic assembly further has an optical subassembly comprising an arrayed waveguide grating (AWG) and an array of turning mirrors, both attached to a temperature-control unit in a side-by-side arrangement and flip-chip mounted on the substrate over the APDs. The opto-electronic assembly employs a silicon-based submount inserted between the APDs and the substrate to accommodate the height difference between the APDs and the TIAs. The submount advantageously enables the placement of APDs in relatively close proximity to the turning mirrors while providing good control of the APD's tilt and offset distance with respect to the substrate. The temperature-control unit enables independent temperature control of the AWG and of the array of turning mirrors, which helps to achieve good optical-coupling efficiency between the AWG and the APDs even when the turning mirrors have a relatively small size.
    • 在一个实施例中,光电组件是具有电耦合到相应的跨阻抗放大器(TIAs)阵列的雪崩光电二极管(APD)阵列的混合集成电路,其中APD和TIA都安装在公共陶瓷 基质。 光电组件还具有光学子组件,该光学子组件包括阵列波导光栅(AWG)和转向镜阵列,它们并排连接到并排布置的温度控制单元和安装在基板上的倒装芯片 APD。 光电组件采用插入在APD和衬底之间的硅基底座,以适应APD和TIA之间的高度差。 底座有利地使得APD的位置相对靠近转向镜同时提供对APD相对于衬底的倾斜和偏移距离的良好控制。 温度控制单元实现了AWG和转向镜阵列的独立温度控制,即使当转向镜具有相对小的尺寸时,这有助于在AWG和APD之间实现良好的光耦合效率。
    • 8. 发明申请
    • Thermo-optic waveguide apparatus
    • 热光波导装置
    • US20080181550A1
    • 2008-07-31
    • US11700534
    • 2007-01-31
    • Mark P. Earnshaw
    • Mark P. Earnshaw
    • G02F1/035
    • G02F1/0147G02F1/225
    • Apparatus including a waveguide segment having a cladding that surrounds an optically-transmissive core extending along a path; a heater in thermal communication with the waveguide segment along at least a part of the path; a thermally-conductive substrate; a thermally-conductive base in fixed alignment with the waveguide segment and the thermally-conductive substrate, the thermally-conductive base being discontinuously on the waveguide segment along the path; and a rib in fixed alignment with the waveguide segment and the thermally-conductive substrate, the rib transversely extending in a direction away from the waveguide segment at a point along the path. Process utilizing apparatus for generating a phase shift in light.
    • 包括具有包围沿着路径延伸的光学透射芯的包层的波导段的装置; 沿着所述路径的至少一部分与所述波导段热连通的加热器; 导热基板; 与所述波导段和所述导热基板固定对准的导热基体,所述导热基体沿着所述路径不连续地在所述波导段上; 以及与所述波导段和所述导热基板固定对准的肋,所述肋在沿着所述路径的点处在远离所述波导段的方向上横向延伸。 用于在光中产生相移的工艺利用装置。