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    • 101. 发明公开
    • Tunable all-pass optical filters with large free spectral ranges
    • 具有大自由光谱范围的可调谐全通滤光片
    • EP2026123A2
    • 2009-02-18
    • EP08019245.3
    • 2001-05-08
    • LUCENT TECHNOLOGIES INC.
    • Jordan, RebeccaMadsen, Christi Kay
    • G02F1/313G02F1/225G02B6/293
    • G02F1/3136G02B6/12002G02F1/0147G02F1/065G02F2203/15
    • In accordance with the invention, a tunable optical all-pass filter comprises a substrate-supported multilayer waveguiding structure comprising a first layer including a waveguiding optical ring resonator, a second layer for spacing, and a third layer including a curved waveguide. The curved waveguide is optically coupled to the resonator by two spaced apart optical couplers extending through the spacing layer, and tunability is provided by a first phase-shifter to control the optical pathlength of the resonator and a second phase-shifter operative on the waveguide to control the strength of coupling between the waveguide and the resonator. In one embodiment, the waveguide and the resonator are horizontally spaced apart in the non-coupling regions to provide optical isolation. In another, the waveguide and resonator can overlap horizontally, but the spacer layer is thicker in the non-coupling regions to provide optical isolation.
    • 根据本发明,一种可调谐光学全通滤波器包括基板支持的多层波导结构,该多层波导结构包括第一层和第三层,第一层包括波导光学环形谐振器,第二层用于间隔,第三层包括弯曲波导。 弯曲波导通过延伸穿过间隔层的两个间隔开的光耦合器光学耦合到谐振器,并且由第一移相器提供可调谐性以控制谐振器的光路长度和在波导上操作的第二移相器到达 控制波导和谐振器之间的耦合强度。 在一个实施例中,波导和谐振器在非耦合区域中水平间隔开以提供光学隔离。 另一方面,波导和谐振器可水平重叠,但间隔层在非耦合区域较厚以提供光学隔离。
    • 104. 发明公开
    • OPTICAL DEVICE
    • 光学器件
    • EP1250627A2
    • 2002-10-23
    • EP01946949.3
    • 2001-01-29
    • Alcatel Optronics UK Limited
    • LAMING, Richard, IanHOEKSTRA, Tsjerk, Hans
    • G02F1/01
    • G02F1/011G02F1/0147G02F1/065G02F2001/0113
    • An optical device comprises a substrate (310) having at least one light-guiding core (320) and cladding material (330) surrounding the core; a cladding-modifying element (340) disposed alongside, at least in part, a portion of the light-guiding core, the cladding-modifying element being formed of a material different to the cladding material so that the refractive index difference between the material of the cladding-modifying element and the cladding material is dependent upon the temperature of the cladding-modifying element; and a heating and/or cooling arrangement for altering the temperature of the cladding-modifying element. A portion of the light-guiding core (320) is narrowed.
    • 一种光学器件,包括具有至少一个导光芯(320)和包围芯的包覆材料(330)的衬底(310) 至少部分地与光导芯的一部分并排设置的包覆改性元件(340),包覆改性元件由与包覆材料不同的材料形成,使得材料之间的折射率差 包层修改元件和包层材料取决于包层修改元件的温度; 以及用于改变包覆改性元件的温度的加热和/或冷却装置。 导光芯(320)的一部分变窄。
    • 110. 发明公开
    • Variable optical filter
    • VARIABLER OPTISCHER过滤器
    • EP1048962A2
    • 2000-11-02
    • EP00303642.3
    • 2000-04-28
    • JDS Uniphase Inc.
    • Diemeer, Mart
    • G02B6/28
    • G02B6/3576G02B5/28G02B6/122G02B6/1221G02B6/125G02B6/266G02B6/2813G02B6/29358G02B6/2937G02B6/29395G02B6/3512G02B6/355G02B6/3594G02B26/001G02B2006/121G02F1/0147G02F1/065G02F1/3132G02F1/3136G02F1/3137G02F2001/217G02F2201/02G02F2203/48
    • The present invention relates to a variable optical filter that can be used to filter an incoming signal, attenuate an incoming signal or in one configuration switch an incoming signal from one path to another. The present invention has found that an accurate and economical variable optical filter can be created by using an elastomeric material having a high coefficient of expansion in cooperation with a means for locally varying the temperature of the elastomeric material as an actuator for moving a reflective surface within the optical filter. The actuator can be operated in a controlled manner for example, to effect a tilt of the reflective surface for switching or attenuating an optical signal, or to vary the resonant wavelengths of a resonant cavity between partially reflective surfaces. In accordance with the invention there is provided, a variable optical filter comprising an input port and an output port; a first at least partially reflective surface disposed to receive a beam of light launched from the input port; an elastomeric material for supporting and varying the position of the at least partially reflective surface with respect to the input port; a heater for applying variable amounts of heat to the elastomeric material to move or pivot the at least partially reflective surface relative to the input port; and, control means for controlling the heater and for providing a signal to apply variable amounts of heat.
    • 本发明涉及一种可变滤波器,其可用于滤波输入信号,衰减输入信号或在一个配置中将输入信号从一个路径切换到另一个路径。 本发明已经发现,通过使用具有高膨胀系数的弹性体材料,可以与用于局部地改变弹性体材料的温度的装置一起作为用于移动内部的反射表面的致动器来产生精确和经济的可变滤光器 滤光片。 致动器可以例如受控的方式操作,以实现用于切换或衰减光信号的反射表面的倾斜,或改变部分反射表面之间的谐振腔的谐振波长。 根据本发明,提供一种包括输入端口和输出端口的可变滤光器; 设置成接收从输入端口发射的光束的第一至少部分反射表面; 用于相对于输入端口支撑和改变至少部分反射表面的位置的弹性体材料; 加热器,用于向所述弹性体材料施加可变量的热量以相对于所述输入端口移动或枢转所述至少部分反射表面; 以及用于控制加热器并提供信号以应用可变量的热量的控制装置。