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    • 2. 发明专利
    • Optical phase adjusting element and demodulator using the same
    • 光学相位调节元件和使用相同的DEMODULATOR
    • JP2012256026A
    • 2012-12-27
    • JP2012077124
    • 2012-03-29
    • Japan Oclaro Inc日本オクラロ株式会社
    • TAKAMATSU SHOJISAKA TAKUMA
    • G02F1/01
    • G02F1/0147G02F2001/212G02F2001/215G02F2203/50
    • PROBLEM TO BE SOLVED: To provide an optical phase adjusting element suppressing a temperature distribution in a thermo-optical element and having a small optical aberration, and to provide a demodulator using the same.SOLUTION: An optical phase adjusting element according to the present invention includes: the thermo-optical element of which a refractive index with respect to an input optical signal changes dependently on temperature; a temperature change section, having contact with one end of the thermo-optical element and of which a temperature changes so that a temperature of the thermo-optical element becomes a desired temperature; a heat dissipation section being disposed on an opposite side of the thermo-optical element with respect to the temperature change section and going into a state of thermal equilibrium at a temperature different from the temperature of the temperature change section; and a temperature buffer section, being disposed between the temperature change section and the heat dissipation section, having contact with the temperature change section and the heat dissipation section, and having a heat resistance greater than that of the heat dissipation section.
    • 要解决的问题:提供抑制热光元件中的温度分布并具有小的光学像差的光学相位调节元件,并提供使用该相位调制元件的解调器。 解决方案:根据本发明的光学相位调节元件包括:相对于输入光信号的折射率根据温度变化的热光学元件; 温度变化部,其与所述热光元件的一端接触,并且其温度变化使得所述热光元件的温度变为期望温度; 散热部,其相对于所述温度变化部设置在所述热光元件的相对侧,并且在与所述温度变化部的温度不同的温度下进入热平衡状态; 以及温度缓冲部,其设置在所述温度变化部和所述散热部之间,与所述温度变化部和所述散热部接触,并且具有大于所述散热部的耐热性。 版权所有(C)2013,JPO&INPIT
    • 3. 发明专利
    • Demodulator
    • 解调器
    • JP2010088075A
    • 2010-04-15
    • JP2008258030
    • 2008-10-03
    • Fujitsu Optical Components Ltd富士通オプティカルコンポーネンツ株式会社
    • SHIMIZU TAKASHITERADA KOJIYAMAMOTO TAKESHI
    • H04B10/516H04B10/548H04B10/61
    • G02F1/21G02F2001/215G02F2203/20G02F2203/21H04L27/2071H04L27/223
    • PROBLEM TO BE SOLVED: To provide a demodulator easily controlling a phase in a light transmission system using differential phase modulation.
      SOLUTION: The modulator (50) is provided with: a branching means (51), which branches a differential phase modulation light signal into a first branch light (62) and a second branch light (63) to emit first branch light into a first optical path (A) and emit second branch light into a second optical path (B); a first medium (53) arranged on the first optical path; a second medium (55) arranged on the second optical path and provided with a refractive index different from that of the first medium so that the second branch light is delayed with respect to the first branch light having passed the first medium by 1 symbol; and a multiplexing means (54), which multiplexes the first branch light having passed the first medium with the second branch light having passed the second medium.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种使用差分相位调制容易地控制光传输系统中的相位的解调器。 解决方案:调制器(50)设置有:分支装置(51),其将差分相位调制光信号分支为第一分支光(62)和第二分支光(63)以发射第一分支光 进入第一光路(A)并将第二分支光发射到第二光路(B)中; 布置在第一光路上的第一介质(53) 布置在所述第二光路上并且具有与所述第一介质的折射率不同的折射率的第二介质(55),使得所述第二分支光相对于已经通过所述第一介质的所述第一分支光延迟1个符号; 以及多路复用装置,其将经过第一介质的第一分支光与经过第二介质的第二分支光复用。 版权所有(C)2010,JPO&INPIT