中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

237 records (took 0.023 seconds)

    Light modulator and wave guide device
    121.
    发明公开
    Light modulator and wave guide device 失效
    光调制器和波导装置。

    公开(公告)号：EP0219069A2

    公开(公告)日：1987-04-22

    申请号：EP86114032.5

    申请日：1986-10-10

    Applicant: Fuji Photo Film Co., Ltd.

    Inventor： Okazaki, Yoji c/o Fuji Photo Film Co., Ltd. ,  Sunagawa, Hiroshi c/o Fuji Photo Film Co., Ltd. ,  Kamiyama, Kozi c/o Fuji Photo Film Co., Ltd.

    IPC: G02F1/295 ,  H04N1/12

    CPC classification number: H04N1/1275 ,  G02F1/0147 ,  G02F1/295 ,  G02F2201/302 ,  G06K15/1285 ,  H04N1/12

    Abstract: A light modulator comprises a stack of a wave guide layer (11) and an adjacent layer (12) normally exhibiting a refractive index smaller than that of the wave guide layer, at least one of these layers being formed of a material whose refractive index changes by application of energy. An energy applicator is provided at least in one of these layers, and a dielectric grating (G) is positioned at the surface of the adjacent layer (12) over a section where energy is applied by the energy applicator. A drive circuit is provided for energizing the energy applicator and causing a change in refractive index to arise in the wave guide layer (11) and/or the adjacent layer (12) so that wave guided inside of the wave guide layer (11) is radiated out of the stack by interaction with the dielectric grating (G). In a wave guide device, the wave guide layer (11) is formed of a thermo-optic material in which the thermal coefficient of refractive index is zero or negative, and the adjacent layer (12) is formed of a thermo-optic material exhibiting a positive thermal coefficient of refractive index.

    光學裝置
    122.
    发明专利
    光學裝置 失效
    光学设备

    公开(公告)号：TW399372B

    公开(公告)日：2000-07-21

    申请号：TW087114189

    申请日：1998-08-27

    Applicant: LM艾瑞克生電話公司

    Inventor： 馬帝斯哥斯塔佛森

    IPC: H04B ,  G02B

    CPC classification number: H04Q11/0005 ,  G02B6/12007 ,  G02B2006/12107 ,  G02B2006/12147 ,  G02F1/3132 ,  G02F1/3133 ,  G02F2201/302 ,  H04Q2011/0022 ,  H04Q2011/0032 ,  H04Q2011/0039

    Abstract: 本發明乃關於以方向性耦合器結構型式之多波長選擇開關。方向性耦合器結構包含二個波導，所安排之波導展現不同之有效繞射指數。在一部分之波導安排成彼此接近、俾在第一波導中之光場可重疊第二光波導、反之亦然，在該部分，至少安排二個光柵以供同方向耦合。該光柵之安排成彼此隔離。本發明尚包含一方法供經由使用該多波長選擇開關來切換波長頻道。

    Abstract in simplified Chinese: 本发明乃关于以方向性耦合器结构型式之多波长选择开关。方向性耦合器结构包含二个波导，所安排之波导展现不同之有效绕射指数。在一部分之波导安排成彼此接近、俾在第一波导中之光场可重叠第二光波导、反之亦然，在该部分，至少安排二个光栅以供同方向耦合。该光栅之安排成彼此隔离。本发明尚包含一方法供经由使用该多波长选择开关来切换波长频道。

    用於全光學脈波位置調變之高線性電光延遲產生器
    123.
    发明专利
    用於全光學脈波位置調變之高線性電光延遲產生器 失效
    用于全光学脉波位置调制之高线性电光延迟产生器

    公开(公告)号：TW561715B

    公开(公告)日：2003-11-11

    申请号：TW091110902

    申请日：2002-05-23

    Applicant: HRL實驗室LLC

    Inventor： 愛諾夫 史塔尼斯拉夫I

    IPC: H04B ,  G02F

    CPC classification number: G02F1/011 ,  G02F2201/066 ,  G02F2201/20 ,  G02F2201/302 ,  G02F2201/307 ,  G02F2202/20

    Abstract: 一種光延遲產生器包括一個由電光活性材料製成，並諧振耦合至第二非電光活性導波管的第一導波管。該第一導波管包括一個線性調頻脈波分布布拉格反射器(chirped distributed Bragg reflector，C-DBR)結構，反射一特定波長之光學信號於此結構內之一特定反射點。適用於第一導波管的電場改變了該電光活性材料的折射率，並因而轉移了該反射點。自該反射點反射的光學信號被諧振耦合進第二導波管，且因此被適用於第一導波管的電場所影響。適用於光學信號的可控制光延遲產生於控制該反射點，以及光學信號向前傳播於第一導波管，反射於反射點，並向後傳播於第二導波管的來回傳導時間。

    Abstract in simplified Chinese: 一种光延迟产生器包括一个由电光活性材料制成，并谐振耦合至第二非电光活性导波管的第一导波管。该第一导波管包括一个线性调频脉波分布布拉格反射器(chirped distributed Bragg reflector，C-DBR)结构，反射一特定波长之光学信号于此结构内之一特定反射点。适用于第一导波管的电场改变了该电光活性材料的折射率，并因而转移了该反射点。自该反射点反射的光学信号被谐振耦合进第二导波管，且因此被适用于第一导波管的电场所影响。适用于光学信号的可控制光延迟产生于控制该反射点，以及光学信号向前传播于第一导波管，反射于反射点，并向后传播于第二导波管的来回传导时间。

    External cavity laser with tunable resonant grating filter
    125.
    发明公开
    External cavity laser with tunable resonant grating filter 有权
    外腔激光器和可调共振光栅滤波器

    公开(公告)号：EP1939653A3

    公开(公告)日：2008-08-27

    申请号：EP08154863.8

    申请日：2003-12-24

    Applicant: Pirelli & C. S.p.A.

    Inventor： Pietra, Giulia ,  Gorni, Giacomo Maria

    IPC: H01S5/14 ,  G02B5/20

    CPC classification number: G02B6/12007 ,  G02B6/124 ,  G02F1/216 ,  G02F2201/302 ,  G02F2203/055 ,  G02F2203/15 ,  H01S3/08059 ,  H01S3/105 ,  H01S3/1055 ,  H01S5/12 ,  H01S5/141 ,  H01S5/142

    Abstract: The invention relates to an external-cavity tunable laser (60) system configured to emit radiation at a laser emission wavelength, the tunable laser system comprising an external cavity having a plurality of cavity modes. The external cavity includes a gain medium (61) to emit an optical beam into the external cavity, and a tunable optical resonant grating filter (66;20;40) reflecting the optical beam at a resonant wavelength. The filter comprises a diffraction grating (23;52), a planar waveguide (28;46) optically interacting with the diffraction grating (23;52), the diffraction grating and the planar waveguide forming a resonant structure, and a light transmissive material having a selectively variable refractive index to permit tuning of the filter. The light transmissive material is a liquid crystal material or a thermo-optical material having a thermo-optic coefficient of not less than 10 -4 /°C so as to form a tunable cladding layer (30;43) for the planar waveguide. The planar waveguide (28;46) is placed between the diffraction grating (23;52) and the tunable cladding layer (30;43).

    DIRECTIONAL COUPLER TYPE ELECTRO-OPTIC MODULATOR
    128.
    发明公开
    DIRECTIONAL COUPLER TYPE ELECTRO-OPTIC MODULATOR 审中-公开
    从定向耦合器型电光调制器

    公开(公告)号：EP1159647A1

    公开(公告)日：2001-12-05

    申请号：EP00907394.1

    申请日：2000-03-02

    Applicant: Zenastra Photonics Inc.

    Inventor： SUN, De-Gui

    IPC: G02F1/313

    CPC classification number: G02F1/065 ,  G02F1/3132 ,  G02F2201/302

    Abstract: A high-performance electro-optic intensity modulator using two polymeric waveguides (22 and 24) having a high extinction-ratio modulation process is implemented by the coupling-out effect of induced grating modulation. The upper modulating electrode (32) has a grating pattern overlapping an edge of the coupling-out waveguide (24) along its length. The two waveguides can be either single-mode or multi-mode, even highly multimode. The inducing of a modulated grating-coupler in a waveguide channel makes the coupling between two waveguides become unidirectional and the coupling efficiency can be achieved to a very high value in theory. The two waveguide channels in this intensity modulator may have large dimensions, so the device can support either single-mode or multi-mode operation. The electro-optic waveguide intensity modulator may be used either as a single optical modulator/switch or as a waveguide modulator/switch array for fiber-optic communication. The modulator can also be implemented in an electro-optic crystal such as LiNbO3. The polymeric waveguide intensity modulator may be thermo-optically modulated.

    Non-linear optical coupler
    129.
    发明公开
    Non-linear optical coupler 失效
    非线性光学耦合器

    公开(公告)号：EP0864914A3

    公开(公告)日：2000-05-31

    申请号：EP98104441.5

    申请日：1998-03-12

    Applicant: OTC Optical Technologies Center s.r.l.

    Inventor： Campi, Domenico ,  Coriasso, Claudio ,  Faustini, Luca ,  Stano, Alessandro

    IPC: G02F1/35

    CPC classification number: G02F1/3521 ,  G02F2201/302

    Abstract: An integrated optics non linear coupler presents on a surface a first and a second waveguide (2, 3) coupled contradirectionally by means of a distributed feedback grating (10). The first waveguide (2) defines an input port (4) and a first output port (5) of the device (transmission output) and the second waveguide (3) defines a second output port (6) of the device (reflection output). By means of an optical control signal injected into the device together with an information signal, the device can be brought to conditions of non-linear operation, thus making the grating (10) switch from transmitting to reflecting behaviour or vice versa with respect to a given wavelength.

Patent Agency Ranking