公开(公告)号：US20090290160A1

公开(公告)日：2009-11-26

申请号：US12541770

申请日：2009-08-14

Applicant: DOMINO TAVERNER

Inventor： DOMINO TAVERNER

IPC: G01N21/25 ,  G01M11/02

CPC classification number: G01J3/02 ,  G01J3/0245 ,  G01J3/027 ,  G01J3/10 ,  G01J3/1895 ,  G01J3/32 ,  G01J3/4338

Abstract: Methods and apparatus for the active control of a wavelength-swept light source used to interrogate optical elements having characteristic wavelengths distributed across a wavelength range are provided.

Abstract translation: 提供用于主动控制用于询问具有分布在波长范围上的特征波长的光学元件的波长扫描光源的方法和装置。

公开(公告)号：US07505642B2

公开(公告)日：2009-03-17

申请号：US11878177

申请日：2007-07-23

Applicant: Hwa Yaw Tam ,  Weng Hong Chung

Inventor： Hwa Yaw Tam ,  Weng Hong Chung

IPC: G02B6/00 ,  G02B6/34 ,  G01B9/02

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。

公开(公告)号：US20090028193A1

公开(公告)日：2009-01-29

申请号：US11599950

申请日：2006-11-15

Applicant: Mohammed N. Islam

Inventor： Mohammed N. Islam

IPC: H01S3/30

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. In one particular embodiment, the pump signal wavelength resides in the anomalous group-velocity dispersion regime of the first fiber and where different intensities in the pump signal can cause relative motion between different parts of the modulated pump signal produced through modulational instability in the first fiber. The light source also including 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。 在一个具体实施例中，泵浦信号波长驻留在第一光纤的异常群 - 速度色散方案中，并且其中泵浦信号中的不同强度可引起通过第一光纤中的调制不稳定性产生的调制泵浦信号的不同部分之间的相对运动 。 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。