公开(公告)号：US20060013534A1

公开(公告)日：2006-01-19

申请号：US10512574

申请日：2003-04-29

申请人： Klaus Bohnert ,  Karim Haroud ,  Andreas Frank ,  Hubert Brandle

发明人： Klaus Bohnert ,  Karim Haroud ,  Andreas Frank ,  Hubert Brandle

IPC分类号： G02B6/34

CPC分类号： H01S3/0675 ,  G01D5/344 ,  G01L1/246 ,  G01L9/0079 ,  G01L11/025 ,  H01S3/06712 ,  H01S3/08031 ,  H01S3/1053

摘要： A high-resolution fiber laser sensor for measuring a quantity to be measured M has a pumping light source (2), a fiber laser (1) and a detection/evaluating unit (3). The fiber laser (1) has: a birefringent first end reflector (11), a second end reflector (12), a laser-amplifying fiber (13), a sensor fiber (14) and a means for mode coupling (15). The laser-amplifying fiber (13), the sensor fiber (14) and the means for mode coupling (15) are arranged between the end reflectors (11, 12). In the fiber laser (1), light is capable of propagating in two optical states (x, y; LP′01, LP′11) which are orthogonal to one another due to their polarization and/or their transversal space structure. The orthogonal optical states (x, y; LP′01, LP′11) can be coupled to one another by the means for mode coupling (15). In the fiber laser (1), a number of longitudinal modes (LMxp, LMxp+1 . . . , LMyq, LMyq+1 . . . ; LM01p, LM01p+1 . . . , LM11q, LM11q+1 . . . ) are capable of oscillating in each of the two optical states (x, y; LP′01, LP′11). In the sensor fiber (14) a change in the birefringence for the two orthogonal optical states (x, y; LP′01, LP′11) can be achieved by interaction of the quantity to be measured (M) with the sensor fiber (14). The change in the birefringence results in a change in the beat frequencies in the laser emission. Due to the fact that the first end reflector (11) is detuned with respect to the second end reflector (12), it is possible to detect individual polarization mode beat signals instead of one beat signal which consists of a number of degenerated PMB signals and is, therefore, broadened. A high sensor resolution is achieved.

公开(公告)号：US06901187B2

公开(公告)日：2005-05-31

申请号：US10257323

申请日：2001-04-05

申请人： Karim Haroud ,  Etienne Rochat ,  Rene Dändliker

发明人： Karim Haroud ,  Etienne Rochat ,  Rene Dändliker

IPC分类号： G01D5/353 ,  G01L1/24 ,  G02B6/34

CPC分类号： G01L1/246 ,  G01D5/35316

摘要： A fiber laser sensor has a fiber laser (FL) with two reflectors in the form of a first and a second Bragg grating (4, 5) and a fiber segment (3) arranged in between. The first Bragg grating (4) is arranged in a temperature-sensitive fashion. The second Bragg grating is a chirped Bragg grating (5) whose central wavelength is stabilized with regard to temperature changes. By means of this sensor, temperature and pressure can simultaneously be measured separately from one another, beat frequencies of orthogonal polarization eigenmodes of the fiber laser (FL) being a measure of the pressure and beat frequencies of longitudinal modes being a measure of the temperature.

摘要翻译： 光纤激光传感器具有光纤激光器（FL），其具有第一和第二布拉格光栅（4,5）和布置在其间的光纤段（3）形式的两个反射器。 第一布拉格光栅（4）以温度敏感的方式布置。 第二个布拉格光栅是啁啾的布拉格光栅（5），其中心波长相对于温度变化是稳定的。 通过该传感器，温度和压力可以彼此分开测量，光纤激光器的正交偏振本征模式的拍频（FL）作为测量温度的纵向模式的压力和拍频的量度。

公开(公告)号：US07251023B2

公开(公告)日：2007-07-31

申请号：US10512574

申请日：2003-04-29

申请人： Klaus Bohnert ,  Karim Haroud ,  Andreas Frank ,  Hubert Brändle

发明人： Klaus Bohnert ,  Karim Haroud ,  Andreas Frank ,  Hubert Brändle

IPC分类号： G01N21/00

CPC分类号： H01S3/0675 ,  G01D5/344 ,  G01L1/246 ,  G01L9/0079 ,  G01L11/025 ,  H01S3/06712 ,  H01S3/08031 ,  H01S3/1053

摘要： A high-resolution fiber laser sensor for measuring a quantity to be measured M has a pumping light source, a fiber laser and a detection/evaluating unit. The fiber laser has: a birefringent first end reflector, a second end reflector, a laser-amplifying fiber, a sensor fiber and a mode coupling. The laser-amplifying fiber, the sensor fiber and the mode coupling are arranged between the end reflectors. In the fiber laser, light is capable of propagating in two optical states which are orthogonal to one another due to their polarization and/or their transversal space structure. The orthogonal optical states can be coupled to one another by the mode coupling. In the fiber laser, a number of longitudinal modes are capable of oscillating in each of the two optical states. In the sensor fiber a change in the birefringence for the two orthogonal optical states can be achieved by interaction of the quantity to be measured with the sensor fiber.

摘要翻译： 用于测量待测量M的高分辨率光纤激光传感器具有泵浦光源，光纤激光器和检测/评估单元。 光纤激光器具有：双折射第一端反射器，第二端反射器，激光放大光纤，传感器光纤和模式耦合。 激光放大光纤，传感器光纤和模式耦合设置在端反射器之间。 在光纤激光器中，由于它们的极化和/或它们的横向空间结构，光能够以两个彼此正交的光学状态传播。 正交光学状态可以通过模式耦合彼此耦合。 在光纤激光器中，多个纵向模式能够在两个光学状态中的每一个中振荡。 在传感器光纤中，两个正交光学状态的双折射变化可以通过将待测量与传感器光纤的相互作用来实现。

公开(公告)号：US20080212151A1

公开(公告)日：2008-09-04

申请号：US11912167

申请日：2006-11-08

申请人： Frank Wolf ,  Vladislav Matusevich ,  Richard Kowarschik ,  Karim Haroud ,  Andreas Pack

发明人： Frank Wolf ,  Vladislav Matusevich ,  Richard Kowarschik ,  Karim Haroud ,  Andreas Pack

IPC分类号： G02B5/32 ,  G03H1/08 ,  B29D11/00 ,  G02B6/34

CPC分类号： G01N21/552 ,  B60S1/0822 ,  B60S1/084 ,  B60S1/0877 ,  G01N2201/0216 ,  G02B5/32 ,  G03H1/0408 ,  G03H2260/12

摘要： The invention relates to a rain sensor, especially for a motor vehicle, said sensor comprising an optical waveguide (22) which can be arranged in a windscreen. According to the invention, the planar holographic coupling elements for coupling and decoupling radiation (4) are formed from layered photo-polymer parts (3) into which volume holograms are integrated. The photo-polymer parts (3) are arranged between the core (1) of the waveguide and the envelope of the waveguide (2), resulting in a simple production method and an increased flexibility in terms of the arrangement of the waveguide (22) in the windscreen.

摘要翻译： 本发明涉及一种特别适用于机动车辆的雨水传感器，所述传感器包括可布置在挡风玻璃中的光波导（22）。 根据本发明，用于耦合和去耦辐射的平面全息耦合元件（4）由层叠的光聚合物部分（3）形成，体积全息图被集成在其中。 光聚合物部分（3）布置在波导的芯（1）和波导（2）的外壳之间，导致简单的制造方法和在波导（22）的布置方面增加的灵活性， 在挡风玻璃上

公开(公告)号：US20080212101A1

公开(公告)日：2008-09-04

申请号：US11667510

申请日：2005-10-12

申请人： Frank Wolf ,  Vladislav Matusevich ,  Manfred Tettweiler ,  Richard Kowarschik ,  Karim Haroud ,  Andreas Pack

发明人： Frank Wolf ,  Vladislav Matusevich ,  Manfred Tettweiler ,  Richard Kowarschik ,  Karim Haroud ,  Andreas Pack

IPC分类号： G01N21/55

CPC分类号： B32B17/10036 ,  B32B17/10761 ,  B60S1/0822 ,  B60S1/084 ,  B60S1/0877 ,  G01N21/552

摘要： In an optical sensor for detecting moisture on a windshield of a motor vehicle, in which the light radiation is deflectable to a detection area on the windshield situated in the light path between transmitter and receiver, the transmitter and/or the receiver have a transparent design and are integrated into the windshield. The transparent optical elements may thus be situated in the area of a wiped field of the windshield cleaned by the windshield wiper.

摘要翻译： 在用于检测机动车辆的挡风玻璃上的水分的光学传感器中，其中光辐射可偏转到位于发射器和接收器之间的光路中的挡风玻璃上的检测区域，发射器和/或接收器具有透明设计 并被集成到挡风玻璃中。 因此，透明光学元件可以位于由挡风玻璃刮水器清洁的挡风玻璃的擦拭区域的区域中。

公开(公告)号：US06018602A

公开(公告)日：2000-01-25

申请号：US103485

申请日：1998-06-24

申请人： Jean-Michel Mayor ,  Etienne Rochat ,  Karim Haroud

发明人： Jean-Michel Mayor ,  Etienne Rochat ,  Karim Haroud

IPC分类号： H01S3/10 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H04B10/118 ,  G02B6/26

CPC分类号： H04B10/118 ,  H01S3/06704 ,  H01S3/06754 ,  H01S3/06787 ,  H01S3/094003 ,  H01S5/4018

摘要： The instant invention relates to a method and an arrangement for the space-based operation of quantum-optical amplifiers embodied as optical waveguides, while taking the special conditions to be found in space into consideration. An amplifier housing 2 filled with nitrogen has a cutout into which a plan-parallel quartz glass plate 4 has been fitted, through which light beams can enter and leave the housing. The amplifier housing 2 rests on heat-insulating supports 3a, 3b and is temperature-stabilized by a Peltier element 5. The amplifier housing 2 is filled with nitrogen in order to achieve operating conditions similar to those on earth.

摘要翻译： 本发明涉及一种体现为光波导的量子光放大器的基于空间的操作的方法和装置，同时考虑到在空间中发现的特殊条件。 填充有氮气的放大器壳体2具有切口，平行平行的石英玻璃板4已装配到该切口中，光束可以通过该切口进入并离开壳体。 放大器壳体2位于绝热支撑件3a，3b上，并由珀耳帖元件5进行温度稳定。放大器壳体2充满氮气，以实现与地球上类似的操作条件。