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    • 1. 发明公开
    • Optical signal processing apparatus and optical signal processing method
    • Optische Signalverarbeitungsvorrichtung und optisches Signalverarbeitungsverfahren
    • EP1452896A2
    • 2004-09-01
    • EP04012363.0
    • 1997-09-01
    • Nippon Telegraph and Telephone Corporation
    • Kurokawa, TakashiTsuda, HiroyukiOkamoto, KatsunariNaganuma, KazunoriIshii, TetsuyoshiTakenouchi, Hirokazu
    • G02B6/293
    • G02B6/12011G02B6/12007G02B6/12014G02B6/12021G02B6/12023G02B6/12033G02B6/2931G02B6/29394G02B6/4215G02B2006/12104G02B2006/12107G03H1/0005G03H1/0808G03H2222/33
    • The present invention relates to an optical signal processing apparatus and optical signal processing method which enable generation, waveform shaping, waveform measurement, waveform recording, correlation processing, and the like of optical pulses of 1-10 ps. A basic construction of the optical signal processing apparatus includes an optical waveguide (9), (13), (22), (26), (33), (37), (41), (56), a first means (2), (10), (14), (25), (36), (42), (57) for equally distributing output light of the optical waveguide, an optical waveguide comprising an aggregate of optical waveguides changing in optical length by a constant interval, an arrayed waveguide (3), (11), (15), (24), (32), (43), (58) for dividing the output light, second means (4), (12), (16), (23), (34), (35), (59) for focusing optical output of the arrayed waveguide, and a mirror (110), (402), (2021), (2048), (2115) for receiving and reflecting incident light focused by the second means. Or, the apparatus includes an optical waveguide, first means for equally distributing output light of the optical waveguide, an arrayed waveguide comprising an aggregate of optical waveguides changing in optical length by a constant interval for dividing the output light, second means for focusing optical output of the arrayed waveguide, and a spatial filter (5), (17), (109) for receiving light focused by the second means to distribute the incident light on a straight line and making desired amplitude or phase modulation of the light according to the position on the straight line and reflecting the light.
    • 光信号处理装置和光信号处理方法技术领域本发明涉及能够进行1-10ps光脉冲的生成,波形整形,波形测量,波形记录,相关处理等的光信号处理装置和光信号处理方法。 光信号处理装置的基本结构包括光波导(9),(13),(22),(26),(33),(37),(41),(56) ),(10),(14),(25),(36),(42),(57),用于均匀分配光波导的输出光;光波导,包括光波长聚集体, 用于分割输出光的阵列波导(3),(11),(15),(24),(32),(43),(58),第二装置(4),(12) 用于聚焦阵列波导的光输出的反射镜(110),(34),(34),(35),(59)以及反射镜(110),(402),(2021),(2048),(2115) 接收和反映第二种手段聚焦的入射光。 或者,该装置包括光波导,用于均匀地分配光波导的输出光的第一装置,包括光学波长的聚集体的阵列波导,光波长的集合以恒定的间隔改变以分割输出光;第二装置,用于聚焦光输出 和用于接收由第二装置聚焦的光的空间滤波器(5),(17),(109),以将入射光分布在直线上,并根据所述第二装置对光进行所需的幅度或相位调制 直线上的位置并反射光。
    • 3. 发明公开
    • Electrically tunable wavelength-selective filter
    • 过滤器。
    • EP0498375A1
    • 1992-08-12
    • EP92101834.7
    • 1992-02-03
    • NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    • Hirabayashi, KatsuhikoTsuda, HiroyukiKurokawa, Takashi
    • G02F1/21G02F1/1333H01S3/106
    • G02F1/216G02F1/13G02F2001/213G02F2203/055
    • A tunable wavelength-selective filter including a glass substrate (48A), a transparent electrode layer (45A), a high reflective mirror (44A), an alignment layer (43A), a liquid crystal layer (41), an alignment layer (43B), a transparent material layer (42) whose refractivity index is substantially equal to that of the liquid crystal layer (41), a high reflective mirror (44B), a transparent electrode layer (45B), and a glass substrate (48B), which are stacked in this order. An etalon cavity of the filter includes two layers, the liquid crystal layer (41) and the glass plate (42) as a transparent material layer, which enables to lengthen the cavity length without increasing absorption and scattering of the cavity. This makes it possible to narrow FWHM, quicken the response time, and increase the transmittance of the filter. As applications of the filter, a double cavity structure tunable wavelength-selective filter of a wide tunable range, and a photodetector of a simple construction can be realized.
    • 一种包括玻璃基板(48A),透明电极层(45A),高反射镜(44A),取向层(43A),液晶层(41),取向层(43B) ),其折射率基本上等于液晶层(41)的透明材料层(42),高反射镜(44B),透明电极层(45B)和玻璃基板(48B)), 这些按顺序堆叠。 滤光器的标准具腔包括作为透明材料层的液晶层(41)和玻璃板(42)的两层,其能够延长空腔长度而不增加空腔的吸收和散射。 这使得可以缩小FWHM,加快响应时间,并增加滤光片的透射率。 随着滤波器的应用,可以实现具有宽可调范围的双腔结构可调谐波长选择滤波器和简单结构的光电探测器。
    • 6. 发明公开
    • All-optical switch apparatus using a nonlinear etalon
    • Rein optische Schaltervorrichtung unter Anwendung eines nichtlinearen Etalons。
    • EP0360686A2
    • 1990-03-28
    • EP89402564.2
    • 1989-09-19
    • NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    • Tsuda, HiroyukiKurokawa, TakashiNonaka, Koji
    • G02F3/00
    • G02F3/00
    • An all-optical switch apparatus having an optical gate which is unitarily composed of a nonlinear etalon (33) and a pair of GRIN lenses (25, 35), or a nonlinear etalon and a GRIN lens, and having collimating GRIN lenses (23, 27), each of which guides a signal beam (PS) and a control beam (PC) to the optical gate. The resonance wavelength of the etalon can be regulated by adjusting the incident positions of signal beam and/or control beam to the optical gate by moving the collimating GRIN lenses. This decreases the required thickness accuracy of the etalon by one or more orders of magnitude than in the conventional technique. Three major types of switches are disclosed: a primary type in which the signal beam is switched by chaning the transmittance of the etalon by the control beam; a reflecting type which works as a complementary switch of the primary type; and a transfer type in which the direction of travel of the signal beam is changed by emitting either the transmitted signal beam or the reflected signal beam from the optical gate under the control of the control beam.
    • 一种具有由非线性标准具(33)和一对GRIN透镜(25,35)或非线性标准具和GRIN透镜组成的光栅的全光开关装置,并具有准直GRIN透镜(23, 27),其中的每一个将信号光束(PS)和控制光束(PC)引导到光栅。 可以通过移动准直GRIN透镜来调节信号光束和/或控制光束到光栅的入射位置来调节标准具的共振波长。 这将标准具的所需厚度精度降低一个或多个数量级,而不是常规技术。 公开了三种主要类型的开关:一种主要类型,其中通过控制光束对标准具的透射率进行切换来切换信号光束; 作为主要类型的互补开关的反射型; 以及在控制光束的控制下通过发射来自光栅的发射信号光束或反射信号光束来改变信号光束的行进方向的转印类型。
    • 10. 发明公开
    • Optical signal processing apparatus and optical signal processing method
    • 光信号处理装置和光信号处理方法
    • EP1452895A2
    • 2004-09-01
    • EP04012362.2
    • 1997-09-01
    • Nippon Telegraph and Telephone Corporation
    • Kurokawa, TakashiTsuda, HiroyukiOkamoto, KatsunariNaganuma, KazunoriIshii, TetsuyoshiTakenouchi, Hirokazu
    • G02B6/293
    • G02B6/12011G02B6/12007G02B6/12014G02B6/12021G02B6/12023G02B6/12033G02B6/2931G02B6/29394G02B6/4215G02B2006/12104G02B2006/12107G03H1/0005G03H1/0808G03H2222/33
    • The present invention relates to an optical signal processing apparatus and optical signal processing method which enable generation, waveform shaping, waveform measurement, waveform recording, correlation processing, and the like of optical pulses of 1-10 ps. A basic construction of the optical signal processing apparatus includes an optical waveguide (9), (13), (22), (26), (33), (37), (41), (56), a first means (2), (10), (14), (25), (36), (42), (57) for equally distributing output light of the optical waveguide, an optical waveguide comprising an aggregate of optical waveguides changing in optical length by a constant interval, an arrayed waveguide (3), (11), (15), (24), (32), (43), (58) for dividing the output light, second means (4), (12), (16), (23), (34), (35), (59) for focusing optical output of the arrayed waveguide, and a mirror (110), (402), (2021), (2048), (2115) for receiving and reflecting incident light focused by the second means. Or, the apparatus includes an optical waveguide, first means for equally distributing output light of the optical waveguide, an arrayed waveguide comprising an aggregate of optical waveguides changing in optical length by a constant interval for dividing the output light, second means for focusing optical output of the arrayed waveguide, and a spatial filter (5), (17), (109) for receiving light focused by the second means to distribute the incident light on a straight line and making desired amplitude or phase modulation of the light according to the position on the straight line and reflecting the light.
    • 光信号处理装置和光信号处理方法技术领域本发明涉及能够生成1-10ps的光脉冲的生成,波形整形,波形测量,波形记录,相关处理等的光信号处理装置和光信号处理方法。 光信号处理装置的基本结构包括光波导(9),(13),(22),(26),(33),(37),(41),(56),第一装置 ),(10),(14),(25),(36),(42),(57),用于均匀地分布光波导的输出光,光波导包括光学波导的聚集体, 用于分割输出光的阵列波导(3),(11),(15),(24),(32),(43),(58),第二装置(4),(12), (210),(2021),(2048),(2115),用于对阵列波导的光输出进行聚焦的图16(16),(23),(34),(35), 接收和反射由第二装置聚焦的入射光。 或者,该设备包括光波导,用于均匀地分配光波导的输出光的第一装置,包括光波导的集合体的阵列波导,该光波导体的光学长度以恒定的间隔改变以分割输出光,用于聚焦光输出的第二装置 以及空间滤波器(5),(17),(109),用于接收由第二装置聚焦的光,以将入射光分布在直线上,并根据所述第二装置对所述光进行期望的幅度或相位调制 位于直线上并反射光线。