公开(公告)号：US20150345949A1

公开(公告)日：2015-12-03

申请号：US14653330

申请日：2013-12-12

Applicant: IXBLUE

Inventor： Joachin HONTHAAS ,  Herve LEFEVRE ,  Eric DUCLOUX ,  Jean-Jacques BONNEFOIS

IPC: G01C19/64

CPC classification number: G01C19/64

Abstract: An interferometric measurement device includes a broad-spectrum spontaneous emission light source; a measurement interferometer, receiving as input a light signal with input light power and delivering as output a modulated light signal with output light power, the modulated light signal being modulated at a modulation frequency, depending on a physical parameter (ΩR) to be measured and being proportional to the input light power; an optical radiation detector, receiving the modulated light signal exiting from the measurement interferometer and delivering a modulated electrical signal representative of the output light power; a filtering interferometer, insensitive to the physical parameter to be measured, having a free spectral range ISL and a finesse F selected such that an interval of frequencies, centred around an optimal frequency foptim equal to (2k+1) ISL/2, k being a natural number, and of width Δf equal to [0.9−(3/2F)] ISL, includes the modulation frequency of the modulated light.

Abstract translation: 干涉测量装置包括广谱自发发射光源; 测量干涉仪，作为输入接收具有输入光功率的光信号并且作为输出输出具有输出光功率的调制光信号，所述调制光信号根据物理参数（＆amp; R; R）以调制频率被调制 测量并与输入光功率成比例; 光学辐射检测器，接收从测量干涉仪退出的调制光信号并传送表示输出光功率的调制电信号; 对待测物理参数不敏感的滤波干涉仪具有自由光谱范围ISL和精细度F，使得以最大频率foptim为中心的频率间隔等于（2k + 1）ISL / 2，k为 自然数，宽度＆Dgr; f等于[0.9-（3 / 2F）] ISL，包括调制光的调制频率。

公开(公告)号：US20160025494A1

公开(公告)日：2016-01-28

申请号：US14774540

申请日：2014-03-10

Applicant: IXBLUE

Inventor： Herve LEFEVRE ,  Frederic GUATTARI ,  Cedric MOLUCON ,  Joachin HONTHAAS ,  Eric DUCLOUX ,  Jean-Jacques BONNEFOIS

IPC: G01C19/72

CPC classification number: G01C19/727

Abstract: A fibre-optic interferometric measurement device (100) intended to measure a physical parameter (QR), includes: a wide-spectrum light source (103); a SAGNAC fibre-optic interferometer (110), in which there propagate two counter-propagating light waves (101, 102) including measurement elements (1140) sensitive to the physical parameter that results in a non-reciprocal phase difference Δφρ between the two light waves; and a detector (104) delivering an electric signal representative of the physical parameter. The measurement elements include a ring resonator (1143) in transmission mode including a first coupler (1141) and a second coupler (1142) respectively, which couple a first arm (111) and a second arm (112) respectively of the SAGNAC interferometer to the ring resonator, in such a way that the two light waves travel in opposing directions of travel (1143H, 1143AH).

Abstract translation: 旨在测量物理参数（QR）的光纤干涉测量装置（100）包括：宽光源（103）; SAGNAC光纤干涉仪（110），其中传播包括对物理参数敏感的测量元件（1140）的两个反向传播光波（101,102），该物理参数导致不可逆相位差＆Dgr;＆rgr ; 两个光波之间; 以及传送代表物理参数的电信号的检测器（104）。 测量元件包括传输模式中的环形谐振器（1143），其包括分别将SAGNAC干涉仪的第一臂（111）和第二臂（112）分别耦合到第一耦合器（1141）和第二耦合器（1142） 环形谐振器以这样的方式使得两个光波在相反的行进方向（1143H，1143AH）上行进。