公开(公告)号：EP2710694B1

公开(公告)日：2018-07-04

申请号：EP12786007.0

申请日：2012-05-15

Applicant: Oewaves, Inc.

Inventor： MALEKI, Lute ,  MATSKO, Andrey

IPC: G02F2/00 ,  H01S3/00 ,  H03B17/00 ,  G02F1/35 ,  G02F1/39

CPC classification number: G02F2/00 ,  G02F1/3536 ,  G02F1/39 ,  G02F2203/15 ,  G02F2203/56 ,  H01S3/0092 ,  H03B17/00 ,  H04B2210/006

Abstract: Techniques and devices based on optical resonators made of nonlinear optical materials to form triple-oscillator devices for generating a single optical tone, a radio frequency (RF) oscillation signal and an optical frequency comb signal having different optical frequencies.

公开(公告)号：EP2896935A1

公开(公告)日：2015-07-22

申请号：EP15150865.2

申请日：2015-01-12

Applicant: Honeywell International Inc.

Inventor： Sanders, Glen A. ,  Srandjord, Lee K. ,  Qiu, Tiequn ,  Wu, Jianfeng

IPC: G01C19/72

CPC classification number: G01C19/722 ,  G01C19/721 ,  G02F1/2252 ,  G02F2/00

Abstract: Systems and methods for a polarization matched resonator fiber optic gyroscope are provided. In one embodiment an RFOG comprises: a light source; a fiber optic ring resonator; a photodetector that outputs an electrical signal that varies as a function of optical intensity; and an input light polarization servo. A light beam from the servo is launched into the resonator ring in a first direction of circulation. The input polarization servo comprises a birefringence modulator that modulates a phase shift between two components of an input polarization state of the light beam at ω m , the modulator is controlled to drive towards zero a 1 st harmonic of ω m as measured in the electrical signal. The servo further comprises a tunable ½ waveplate that adjusts an amplitude of the two components of the input polarization state relative to each other. The tunable ½ waveplate is controlled to maximize a peak optical intensity as measured in the electrical signal.

Abstract translation: 提供了一种用于偏振匹配谐振器光纤陀螺仪的系统和方法。 在一个实施例中，RFOG包括：光源; 光纤环谐振器; 光电检测器，其输出根据光强度变化的电信号; 和输入光偏振伺服。 来自伺服器的光束沿着第一循环方向发射到谐振器环中。 输入偏振伺服包括双折射调制器，其调制光束的输入偏振状态的两个分量之间的相移在Ém处，调制器被控制为在电信号中测得的Ém的第一谐波为零驱动 。 伺服还包括可调谐的1/2波片，其调节输入偏振状态的两个分量相对于彼此的振幅。 可调谐的1/2波片被控制以使在电信号中测得的峰值光强度最大化。

公开(公告)号：EP2454581A1

公开(公告)日：2012-05-23

申请号：EP10737378.9

申请日：2010-07-19

Applicant: University Of Leeds ,  The Centre For Integrated Photonics Ltd

Inventor： LINFIELD, Edmund ,  CUNNINGHAM, John ,  DAVIES, Alexander, Giles ,  WOOD, Christopher ,  CANNARD, Paul John ,  MOODIE, David Graham ,  CHEN, Xin ,  ROBERTSON, Michael James

IPC: G01N21/35 ,  G02F1/00 ,  G02F1/355 ,  H01L31/0304

CPC classification number: G02F2/00 ,  C30B25/02 ,  C30B29/40 ,  G01J3/10 ,  G01J3/42 ,  G01N21/3586 ,  G01S17/88 ,  G02F2202/10 ,  G02F2203/13 ,  H01L21/02392 ,  H01L21/02461 ,  H01L21/02543 ,  H01L21/02546 ,  H01L21/02581 ,  H01L31/03042 ,  H01L31/03046 ,  H01L31/09 ,  Y02E10/544

Abstract: A method of generating radiation comprises: manufacturing a structure comprising a substrate supporting a layer of InGaAs, InGaAsP, or InGaAlAs material doped with a dopant, said manufacturing comprising growing said layer such that said dopant is incorporated in said layer during growth of the layer; illuminating a portion of a surface of the structure with radiation having photon energies greater than or equal to a band gap of the doped InGaAs, InGaAsP, or InGaAlAs material so as to create electron-hole pairs in the layer of doped material; and accelerating the electrons and holes of said pairs with an electric field so as to generate radiation. In certain embodiments the dopant is Fe. Corresponding radiation detecting apparatus, spectroscopy systems, and antennas are described.

公开(公告)号：EP2154800A1

公开(公告)日：2010-02-17

申请号：EP08162329.0

申请日：2008-08-13

Applicant: PGT Photonics S.p.A.

Inventor： Romagnoli, Marco ,  Galli, Paola

IPC: H04B10/18 ,  G02F2/00 ,  G02B6/34

CPC classification number: H04B10/5563 ,  G02F2/00 ,  G02F2001/212 ,  G02F2202/20 ,  H04B10/25073 ,  H04B10/504

Abstract: According to an aspect, the present invention relates to an optical communication system for transmitting digital optical signals comprising a data generator adapted to generate a digitally encoded data signal comprising sequences of data at a data rate and comprising two signal levels representing a first state and a second state of the data signal; an optical source adapted to receive the data signal and to produce an optical signal substantially frequency modulated with frequency excursion Δν comprising a first instantaneous frequency (von) associated to the first state and a second instantaneous frequency (ν 1 ) associated to the second state; an optical converter that receives the substantially frequency modulated (FM) optical signal and has an optical transfer function varying with frequency and including at least one pass band with at least a peak transmittance and at least a low-transmittance region, wherein the first frequency of the FM optical signal is spectrally aligned with the low-transmittance region of the optical transfer function of the optical converter so as to convert the substantially FM signal into a substantially amplitude modulated (AM) signal and the at least one pass band has a FWHM comprised between 70% and 200% of the data rate of the FM optical signal
According to a second aspect, the present invention relates to an optical communication system including an electrical signal path between a data generator and an optical source emitting a substantially FM optical signal with frequency excursion Δν, the electrical signal path being adapted to receive the data signal generated by the data generator and to input the data signal into the optical source and having a low-pass transfer function with a cut-off frequency f c not larger than about 2.2(Δν).

Abstract translation: 根据一方面，本发明涉及一种用于传输数字光信号的光通信系统，包括数据发生器，该数据发生器适于产生数字编码的数据信号，该数字信号包括数据速率的数据序列，并包括表示第一状态和 第二状态的数据信号; 光源，适于接收数据信号并产生基本上频率调制的光信号，频率偏移“½包括与第一状态相关联的第一瞬时频率（von）和与第二状态相关联的第二瞬时频率（½1） ; 接收基本上频率调制（FM）光信号并且具有随着频率变化并且包括至少一个具有至少一个峰值透射率和至少一个低透射率区域的通带的光学传递函数的光学转换器，其中第一频率 FM光信号与光转换器的光传递函数的低透射率区域频谱对准，从而将基本上FM调制信号转换成基本幅度调制（AM）信号，并且至少一个通带具有包括的FWHM 在FM光信号的数据速率的70％到200％之间。根据第二方面，本发明涉及一种光通信系统，其包括在数据发生器和发射基本上FM光信号的光源之间的电信号路径， 频率偏移“½，电信号路径适于接收由数据发生器a产生的数据信号 nd将数据信号输入到光源中并具有不大于约2.2（“1/2）的截止频率f c的低通传递函数。

公开(公告)号：EP1886423A1

公开(公告)日：2008-02-13

申请号：EP05739673.1

申请日：2005-05-12

Applicant: Perlos Oyj

Inventor： VON LERBER, Tuomo

IPC: H04B10/06 ,  G02F2/00 ,  H04L7/00

CPC classification number: G02F2/00 ,  G02F2202/32 ,  G02F2203/15 ,  H04L7/0075

Abstract: The signal processing device (100) comprises a light source (50) to emit light (SEMIT) at a wavelength which is substantially equal to the carrier wavelength (λ0) of an optical input signal (SIN), an optical resonator (10) to provide a filtered signal (SSIDE) by optical filtering of said optical input signal (SIN), said optical resonator (10) being non-matched with the carrier wavelength (λ0) of said optical input signal (SIN), and an optical combiner (80) to combine said filtered signal (SSIDE) with said emitted light (SEMIT) to form an optical output signal (SOUT). The signal processing device (100) may be adapted to recover the clock frequency of a modulated input signal (SIN). The intensity of said output signal (SOUT) exhibits periodic variations at the clock frequency when the resonator (10) is adjusted at least approximately to the predetermined sideband of the modulated input signal (SIN).

公开(公告)号：EP0357475B1

公开(公告)日：1994-04-20

申请号：EP89402016.3

申请日：1989-07-13

Applicant: FRANCE TELECOM

Inventor： Loualiche, Slimane ,  Salin, François

IPC: G01R23/17 ,  G02F2/00

CPC classification number: G02F2/00 ,  G01R23/17

公开(公告)号：EP0283222B1

公开(公告)日：1994-01-12

申请号：EP88302159.4

申请日：1988-03-11

Applicant: DIGITAL OPTRONICS CORPORATION

Inventor： Goodwin, Frank Eugene ,  Simonson, Dana

IPC: G01S7/48 ,  G01S17/06 ,  G02F2/00 ,  G01B9/02

CPC classification number: G01B9/02004 ,  G01B9/02003 ,  G01B9/02051 ,  G01B9/02061 ,  G01B2290/70 ,  G01S7/4812 ,  G01S7/4817 ,  G01S7/499 ,  G01S17/06 ,  G01S17/89 ,  G02F2/00

公开(公告)号：EP2495611B1

公开(公告)日：2018-08-15

申请号：EP10826539.8

申请日：2010-10-15

Applicant: National University Corporation Hokkaido University

Inventor： OKAMOTO, Atsushi ,  MORITA, Kazuyuki

IPC: G02F1/31 ,  G02B27/42 ,  G02B27/46 ,  H04J14/00 ,  H04J14/04 ,  H04J14/06 ,  G02B6/34 ,  G02F2/00 ,  G02B5/32 ,  G02B6/14 ,  H04B10/2581

CPC classification number: H04B10/2581 ,  G02B5/32 ,  G02B6/14 ,  G02B6/34 ,  G02F2/00

Abstract: The present invention causes spatial-mode light emitted from an optical fiber (11), which is a multimode fiber, to pass through a photorefractive medium (13). The photorefractive medium (13) includes holograms for signal separation that are written by irradiation of the photorefractive medium with (i) guide light having a wave front identical to the wave front of signal light having a particular spatial mode and (ii) control light. The photorefractive medium includes holograms recorded in a multiplex manner with use of control light having different incidence angles in correspondence with respective spatial modes. For signal separation, irradiating the photorefractive medium (13) with control light (15) having a particular angle separates signal light having a spatial mode corresponding to the incidence angle of the control light (15).

公开(公告)号：EP3208954A4

公开(公告)日：2018-07-11

申请号：EP15853196

申请日：2015-09-02

Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATION TECH

Inventor： SAKAMOTO TAKAHIDE

IPC: H04B10/2543 ,  G02F1/01 ,  G02F2/00 ,  H04B10/2575

CPC classification number: H04B10/2507 ,  G02F1/01 ,  G02F1/2255 ,  G02F2/00 ,  G02F2001/212 ,  H04B10/2543 ,  H04B10/2575 ,  H04B10/516 ,  H04B10/58

Abstract: [Problem] To provide a method capable of easily compensating waveform distortion due to a non-linear effect caused by a complicated electric circuit, and a device for implementing the method. [Solution] Provided are a method capable of effectively compensating signal degradation such as waveform distortion due to a nonlinear effect caused by an optical fiber that is an optical transfer path using an optical phase conjugate signal pair at the time of optical up-conversion or down-conversion, and a device capable of implementing the method. This emission device 25 includes an optical modulator 11, a signal source 13, an optical fiber 15, a multiplexing unit 17, a multiplexing local signal source 19, an optical detector 21, and a transmission antenna 23.

公开(公告)号：EP3092788A4

公开(公告)日：2016-11-16

申请号：EP15735477

申请日：2015-01-08

Applicant: RICOH CO LTD

Inventor： SANGU SUGURU

IPC: H04N5/225 ,  G03B11/00 ,  H04N5/369

CPC classification number: H04N5/23235 ,  G02B26/004 ,  G02B26/02 ,  G02B2207/129 ,  G02F1/13306 ,  G02F2/00 ,  G03B11/00 ,  H04N5/2252 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/2257 ,  H04N5/238 ,  H04N5/335

Abstract: An imaging module has a spatial light modulation element which applies spatial modulation to an incident luminous flux and emits it; an image sensor which obtains the luminous flux to which the spatial modulation has been applied by the spatial light modulation element as image information; and a fixing part which integrally fixes the spatial light modulation element and the image sensor, and the fixing part has a gap-defining member which is arranged between the spatial light modulation element and the image sensor and forms a gap structure having a certain distance, and an imaging device includes the imaging module.

Abstract translation: 成像模块具有对入射光通量进行空间调制并发射的空间光调制元件; 获取由空间光调制元件施加了空间调制的光束作为图像信息的图像传感器; 以及固定部，其一体地固定所述空间光调制元件和所述图像传感器，并且所述固定部具有间隔限定构件，所述间隙限定构件布置在所述空间光调制元件和所述图像传感器之间并形成具有一定距离的间隙结构， 并且成像装置包括成像模块。