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    Broadband or mid-infrared fiber light sources
    52.
    发明授权
    Broadband or mid-infrared fiber light sources 有权
    宽带或中红外光纤光源

    公开(公告)号：US08391660B2

    公开(公告)日：2013-03-05

    申请号：US13241900

    申请日：2011-09-23

    Applicant: Mohammed N. Islam

    Inventor： Mohammed N. Islam

    IPC: G02B6/00

    CPC classification number: G01J3/108 ,  G01B9/02091 ,  G01J3/0218 ,  G01J3/0245 ,  G01J3/42 ,  G01J2003/102 ,  G01J2003/423 ,  G02B6/29349 ,  G02F1/365 ,  G02F2001/3528 ,  G02F2202/32 ,  H01S3/06725 ,  H01S3/06754 ,  H01S3/094007 ,  H01S3/094069 ,  H01S3/094076 ,  H01S3/1024 ,  H01S3/302 ,  H01S5/0064 ,  H01S5/0085 ,  H01S5/0092 ,  H01S5/1092 ,  H01S5/146 ,  H01S5/4012 ,  H01S2301/085

    Abstract: A broadband light source includes one or more laser diodes that are capable of generating a pump signal having a wavelength shorter than 2.5 microns, a pulse width of at least 100 picoseconds and a pump optical spectral width. The light source also includes one or more optical amplifiers that are coupled to the pump signal and are capable of amplifying the pump signal to a peak power of at least 500 W. The light source further includes a first fiber that is coupled to the one or more optical amplifiers. The first fiber including an anomalous group-velocity dispersion regime and a modulational instability mechanism that operates to modulate the pump signal. The light source also includes a nonlinear element that is coupled to the first fiber that is capable of broadening the pump optical spectral width to at least 100 nm through a nonlinear effect in the nonlinear element.

    Abstract translation: 宽带光源包括能够产生波长短于2.5微米的泵浦信号，至少100皮秒的脉冲宽度和泵浦光谱宽度的一个或多个激光二极管。 光源还包括耦合到泵浦信号并且能够将泵浦信号放大到至少500W的峰值功率的一个或多个光放大器。光源还包括第一光纤，其耦合到一个或 更多的光放大器。 第一光纤包括异常组 - 速度色散方案和用于调制泵浦信号的调制不稳定机制。 光源还包括耦合到第一光纤的非线性元件，其能够通过非线性元件中的非线性效应将泵浦光谱宽度扩展至至少100nm。

    OPTICAL SENSOR INTERROGATION SYSTEM BASED ON FDML WAVELENGTH SWEPT LASER
    54.
    发明申请
    OPTICAL SENSOR INTERROGATION SYSTEM BASED ON FDML WAVELENGTH SWEPT LASER 有权
    基于FDML波长扫描激光的光传感器内插系统

    公开(公告)号：US20100103426A1

    公开(公告)日：2010-04-29

    申请号：US12566403

    申请日：2009-09-24

    Applicant: Chang-Seok Kim ,  Myung-Yung Jeong ,  Jae-Seok Park ,  Eun-Joo Jung ,  Hyung-Seok Lee

    Inventor： Chang-Seok Kim ,  Myung-Yung Jeong ,  Jae-Seok Park ,  Eun-Joo Jung ,  Hyung-Seok Lee

    IPC: G01N21/47 ,  G01J3/44

    CPC classification number: G01J3/2889 ,  G01D5/35316 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0245 ,  G01J3/10 ,  G01J3/26 ,  G01J3/42 ,  G01J3/4338

    Abstract: Provided is an optical sensor interrogation system. The optical sensor interrogation system includes: a light source unit which matches round-trip time of light and wavelength tunable cycle time of light in a resonator and emits light; a sensing unit which receives an optical signal in which a center wavelength periodically tunes, from the light source unit and tunes the center wavelength of the optical signal according to physical changes applied from the outside; and a signal processing unit which receives the optical signal reflected from the sensing unit, detects data, and images the data. In particular, the light source unit includes a delaying unit which delays the round-trip time of light and a tunable filter which tunes the wavelength of light so as to match the round-trip time of light with the wavelength tunable cycle time of light. Accordingly, a Fourier domain mode locking (FDML) wavelength swept laser, which operates at speed of several tens kHz or above, is used as a light source so that strain of a fluid, which changes in a short time interval of 0.1 msec or below, is precisely measured and thus a real-time analysis may be performed at high speed.

    Abstract translation: 提供了一种光学传感器询问系统。 光传感器询问系统包括：光源单元，其匹配谐振器中的光的往返时间和波长可调周期时间，并发光; 感测单元，其从光源单元接收中心波长周期性地调谐的光信号，并根据从外部施加的物理变化调谐光信号的中心波长; 以及信号处理单元，其接收从感测单元反射的光信号，检测数据并对数据进行成像。 特别地，光源单元包括延迟光的往返时间的延迟单元和调节光的波长的可调谐滤波器，以便将光的往返时间与光的波长可调周期时间相匹配。 因此，以几十kHz或更高速度运行的傅立叶域模式锁定（FDML）波长扫描激光器被用作光源，使得在0.1msec或更短的时间间隔内变化的流体应变 ，被精确测量，因此可以高速执行实时分析。

    TERAHERTZ SPECTROMETER
    55.
    发明申请
    TERAHERTZ SPECTROMETER 失效
    TERAHERTZ光谱仪

    公开(公告)号：US20090225312A1

    公开(公告)日：2009-09-10

    申请号：US12395266

    申请日：2009-02-27

    Applicant: Florian Formanek ,  Marc-Aurele Brun

    Inventor： Florian Formanek ,  Marc-Aurele Brun

    IPC: G01J3/00

    CPC classification number: G01J3/02 ,  G01J3/0245 ,  G01J3/42 ,  G01N21/3586 ,  G02B6/29376

    Abstract: A terahertz spectrometer includes an optical fiber and an emitter. The optical fiber is branched from a gain fiber constituting an ultra-short pulse oscillator. The emitter generates a terahertz wave from a pulse beam guided from the gain fiber through the optical fiber.

    Abstract translation: 太赫兹光谱仪包括光纤和发射器。 光纤从构成超短脉冲振荡器的增益光纤分支。 发射极通过光纤从增益光纤引导的脉冲光束产生太赫兹波。

    FBG SENSOR INTERROGATION METHOD USING SEMICONDUCTOR OPTICAL AMPLIFIER IN RING CAVITY CONFIGURATION
    56.
    发明申请
    FBG SENSOR INTERROGATION METHOD USING SEMICONDUCTOR OPTICAL AMPLIFIER IN RING CAVITY CONFIGURATION 有权
    使用半导体光学放大器在环形结构中的FBG传感器互连方法

    公开(公告)号：US20070154130A1

    公开(公告)日：2007-07-05

    申请号：US11325983

    申请日：2006-01-05

    Applicant: Hwa Tam ,  Weng Chung

    Inventor： Hwa Tam ,  Weng Chung

    IPC: G02B6/00

    CPC classification number: G01J3/18 ,  G01B11/18 ,  G01J3/0245 ,  G01J3/1895 ,  G01J9/00 ,  H04J14/08

    Abstract: A sensor device that uses a number of bragg grating (FBG) sensors and novel interrogation system with a ring cavity configuration for simultaneous time-division-multiplexex (TDM) and wavelength-division-multiplexed (WDM) interrogation of FBG sensors. The ring cavity includes an amplifier, and output coupler and an optical circulator. The coupler is connected to a wavelength measuring system and the optical circulator is connected to the FBG sensors. The FBG sensors can be in a number of groups. TDM interrogation is applied to each group of FBG sensors while WDM interrogation is applied to each FBG sensors within each group.

    Abstract translation: 一种使用多个布拉格光栅（FBG）传感器和具有环形腔配置的新型询问系统的传感器设备，用于FBG传感器的同时时分复用（TDM）和波分复用（WDM）询问。 环形腔包括放大器，输出耦合器和光循环器。 耦合器连接到波长测量系统，光环行器连接到FBG传感器。 FBG传感器可以在多个组中。 TDM询问应用于每组FBG传感器，而WDM询问应用于每组中的每个FBG传感器。

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