公开(公告)号：US20170211952A1

公开(公告)日：2017-07-27

申请号：US15324967

申请日：2015-07-06

Applicant: IXBLUE

Inventor： Pascal SIMONPIETRI ,  Stephane CHOUVIN ,  Cedric MOLUCON

IPC: G01D5/353 ,  G01D5/34

CPC classification number: G01D5/35322 ,  G01C19/72 ,  G01C19/721 ,  G01C19/722 ,  G01D5/344 ,  G02B5/126 ,  G02B6/126 ,  G02B6/2726 ,  G02B6/30 ,  G02F2001/211

Abstract: Disclosed is an optical fiber interferometric system including a light source (1), a fiber optic coil (8), a coil splitter (3), a photodetector (2), and a polarization filtering unit. According to an embodiment, the polarization filtering unit includes a first waveguide polarizer (51), at least one second thin-plate polarizer (52) and an optical waveguide section (12), the at least one second polarizer (52) being disposed in the Rayleigh zone between a first waveguide end (21) of the first polarizer (51) and a second waveguide end (22) of the optical waveguide section (12).

公开(公告)号：US20170212305A1

公开(公告)日：2017-07-27

申请号：US15324781

申请日：2015-07-06

Applicant: IXBLUE

Inventor： Pascal SIMONPIETRI ,  Stephane CHOUVIN ,  Cedric MOLUCON

IPC: G02B6/27 ,  G02B6/30 ,  G02B6/024 ,  G02B6/126 ,  G02B5/30

CPC classification number: G02B6/2706 ,  G01D5/35322 ,  G02B5/3033 ,  G02B6/024 ,  G02B6/126 ,  G02B6/2726 ,  G02B6/2766 ,  G02B6/30

Abstract: Disclosed is a waveguide polarizing optical device, including a first waveguide polarizer (6), a section of a second optical waveguide (31) and a second thin-plate polarizer (52) having a physical thickness T and a refractive index n, the second thin-plate polarizer (52) being disposed on the optical path between a waveguide end (8) of the first polarizer (6) and one end (32) of the second optical waveguide (31), the physical distance d between the waveguide end (8) of the first polarizer (6) and the end (32) of the second optical waveguide (31) being less than or equal to twice the Rayleigh length and the physical thickness T of the second polarizer (52) being less than or equal to the physical distance d.

公开(公告)号：US20160363446A1

公开(公告)日：2016-12-15

申请号：US15121620

申请日：2015-02-26

Applicant: IXBLUE

Inventor： Herve LEFEVRE ,  Frederic GUATTARI ,  Cedric MOLUCON ,  Stephane CHOUVIN

IPC: G01C19/72 ,  G01B9/02

CPC classification number: G01C19/722 ,  G01B9/02 ,  G01B2290/70 ,  G01C19/726 ,  G01C19/727

Abstract: Interferometric measurement device includes a light source emitting a source signal and optical coupling elements receiving the source signal, directing part of the latter towards a measurement pathway including a Sagnac ring interferometer, of frequency fp, producing a power output signal POUT polarized according to a first polarization direction, tapping off another part of the source signal towards a compensation pathway producing a return power compensation signal PRET, and directing the output and compensation signals towards detection elements. The compensation pathway includes polarization rotation elements producing the compensation signal according to a second cross-direction of polarization, and optical looping elements redirecting part of the compensation signal towards the measurement pathway; the detection elements include a single detector connected to the coupling elements for receiving the output signal and the compensation signal; the device further includes power equilibration elements equalizing the output power and/or return power are routed towards the detector.

Abstract translation: 干涉测量装置包括发射源信号的光源和接收源信号的光耦合元件，将光信号的一部分导向包括频率fp的Sagnac环形干涉仪的测量路径，产生根据第一个信号极化的功率输出信号POUT 偏振方向，将源极信号的另一部分朝向产生返回功率补偿信号PRET的补偿路径，并将输出和补偿信号引导到检测元件。 所述补偿路径包括根据偏振的第二交叉方向产生所述补偿信号的偏振旋转元件，以及光学环路元件将所述补偿信号的一部分重定向到所述测量路径; 检测元件包括连接到耦合元件的单个检测器，用于接收输出信号和补偿信号; 该装置还包括均衡输出功率和/或返回功率的功率平衡元件被路由到检测器。