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公开(公告)号：EP2778771B1
公开(公告)日：2017-12-13
申请号：EP12834969.3
申请日：2012-09-28
发明人： SAKAI Takeshi , MURE Masahito , ICHIKAWA Junichiro
IPC分类号： G02F1/035 , H04B10/50 , H04B10/60 , H04B10/40 , H04B10/588 , H04B10/516 , H04B10/548 , H04B10/564
CPC分类号： H04B10/548 , H04B10/5053 , H04B10/5057 , H04B10/5165 , H04B10/564
摘要： It is possible to suppress carrier light with a simple configuration when modulating the carrier light to generate optical sideband components. An optical carrier-suppressed signal generator includes first splitting means used to split input carrier light into two light beams, an optical modulator which modulates one split carrier light beam and outputs light including optical sideband components, a phase modulator which phase-modulates another split carrier light beam, and second or third splitting means used to split the output light of the optical modulator into two light beams. The output light split by the second or third splitting means and the output light of the phase modulator are multiplexed to obtain the amplitude of the signal waveform of optical power, and the optical modulator is controlled such that the obtained value is minimized.
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2.发明公开
公开(公告)号：EP4239397A1
公开(公告)日：2023-09-06
申请号：EP21886098.9
申请日：2021-10-22
申请人： Sumitomo Osaka Cement Co., Ltd. , National Institute of Information and Communications Technology
发明人： TAKANO Shingo , KATAOKA Yu , OIKAWA Satoshi , ICHIKAWA Junichiro , YAMAGUCHI Yuya , KANNO Atsushi , YAMAMOTO Naokatsu , KAWANISHI Tetsuya
IPC分类号： G02F1/035
摘要： An optical waveguide element (100) includes a substrate (102), an optical waveguide (104) disposed inside the substrate (102) or on the substrate (102), and an electrode (106) provided along the optical waveguide (104), working on the optical waveguide (104) to generate a phase change in a light wave propagating through the optical waveguide (104) . The electrode (106) is a traveling-wave electrode. In a modulation section (108) where the light wave is controlled by the electrode (106), the electrode (106) and the optical waveguide (104) are configured so that the phase change generated in a first modulation section (108c) located within a predetermined distance range from a downstream side end portion along a propagation direction of a traveling wave of an electrical signal propagating through the electrode (106) has a sign opposite to a sign of the phase change generated in a second modulation section (108a) located within a predetermined distance range from an input end of the electrical signal on an upstream side along the propagation direction.
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公开(公告)号：EP2778771A1
公开(公告)日：2014-09-17
申请号：EP12834969.3
申请日：2012-09-28
发明人： SAKAI Takeshi , MURE Masahito , ICHIKAWA Junichiro
IPC分类号： G02F1/035 , H04B10/50 , H04B10/60 , H04B10/40 , H04B10/588
CPC分类号： H04B10/548 , H04B10/5053 , H04B10/5057 , H04B10/5165 , H04B10/564
摘要： It is possible to suppress carrier light with a simple configuration when modulating the carrier light to generate optical sideband components. An optical carrier-suppressed signal generator includes first splitting means used to split input carrier light into two light beams, an optical modulator which modulates one split carrier light beam and outputs light including optical sideband components, a phase modulator which phase-modulates another split carrier light beam, and second or third splitting means used to split the output light of the optical modulator into two light beams. The output light split by the second or third splitting means and the output light of the phase modulator are multiplexed to obtain the amplitude of the signal waveform of optical power, and the optical modulator is controlled such that the obtained value is minimized.
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公开(公告)号：EP3779574A1
公开(公告)日：2021-02-17
申请号：EP19776059.8
申请日：2019-02-27
摘要： To provide an optical element in which an electrode is directly formed on an LN substrate, and a drift phenomenon is suppressed. In an optical element including: a substrate made of lithium niobate crystals; and an electrode disposed on the substrate, the substrate and the electrode are in direct contact with each other, and as a contact metal disposed on a surface of the electrode where the electrode is in contact with the substrate, a metal material whose standard enthalpy of formation per coordinate bond upon oxidation is greater than a standard enthalpy of formation per coordinate bond of niobium pentoxide is used.
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公开(公告)号：EP2703855A1
公开(公告)日：2014-03-05
申请号：EP12777019.6
申请日：2012-04-27
CPC分类号： G02B6/12 , G02F1/0305 , G02F1/0356 , G02F2201/07 , G02F2201/54 , G02F2202/022 , G02F2202/28 , G02F2203/21
摘要： Provided is an optical waveguide device capable of reducing stress that occurs inside an optical waveguide substrate due to a difference in a coefficient of thermal expansion. The optical waveguide device (10) includes an optical waveguide substrate (11) having a thickness of 30 µm or less, and a liquid crystal polymer substrate (12) which holds the optical waveguide substrate (11) and has permittivity lower than that of the optical waveguide substrate (11). The optical waveguide substrate (11) and the liquid crystal polymer substrate (12) are bonded to each other by an adhesive layer (14). Coefficients of thermal expansion of the optical waveguide substrate (11) and the liquid crystal polymer substrate (12) have anisotropy in each substrate plane, and a relative direction between the optical waveguide substrate (11) and the liquid crystal polymer substrate (12) is adjusted in such a manner that anisotropic axial directions of the optical waveguide substrate (11) and anisotropic axial directions the liquid crystal polymer substrate (12) are aligned.
摘要翻译： 本发明提供一种能够减小由于热膨胀系数的差异而在光波导基板内发生的应力的光波导路装置。 光波导装置（10）具备厚度30μm以下的光波导基板（11）和保持该光波导基板（11）的介电常数比该光波导基板（11）的介电常数低的液晶聚合物基板（12） 光波导基板（11）。 光波导衬底（11）和液晶聚合物衬底（12）通过粘合层（14）彼此粘合。 光波导基板（11）和液晶聚合物基板（12）的热膨胀系数在各基板面内具有各向异性，光波导基板（11）与液晶聚合物基板（12）的相对方向为 以使光波导基板（11）的各向异性轴方向与液晶聚合物基板（12）的各向异性轴方向一致的方式进行调整。
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