公开(公告)号：US5116131A

公开(公告)日：1992-05-26

申请号：US510976

申请日：1990-04-19

申请人： Shahrokh R. Farahani ,  Mohammad M. Tehrani

发明人： Shahrokh R. Farahani ,  Mohammad M. Tehrani

IPC分类号： G01C19/66

CPC分类号： G01C19/665

摘要： Disclosed herein is a Pathlength Control Assembly for Ring Laser Gyroscope comprising, in a preferred embodiment, a mirror, coupled to a mirror housing including a mirror post, wherein the mirror is mounted on (or is an integral part of) an axially deflectable membrane of the housing. A pair of piezoelectric transducers are responsive to an electronic input signal and mounted to a backing plate. The transducers sandwich the backing plate and deform the backing plate to drive the mirror post to axially deflect said membrane. In this manner, the backing plate serves a dual function to both support the piezoelectric elements and drive the mirror post.

摘要翻译： 本文公开了一种用于环形激光陀螺仪的光程长度控制组件，其在优选实施例中包括耦合到包括镜柱的反射镜壳体的反射镜，其中反射镜安装在（或作为其一部分）的轴向偏转膜 住房。 一对压电换能器响应电子输入信号并安装到背板上。 传感器夹持背板并使背板变形以驱动镜柱以使所述膜轴向偏转。 以这种方式，背板具有双重功能以支撑压电元件并驱动镜柱。

公开(公告)号：US06438288B1

公开(公告)日：2002-08-20

申请号：US09738593

申请日：2000-12-15

申请人： Mohammad M. Tehrani

发明人： Mohammad M. Tehrani

IPC分类号： G02B626

CPC分类号： G02B6/29358 ,  G01J3/26 ,  G02B6/29395 ,  G02B6/29398 ,  G02B6/32

摘要： A tunable optical filter system receives an optical signal, from an optical fiber. A predetermined wavelength is to be selected from the optical signal. The filter has a first and second aligned collimating lens, each lens having a mirrored surface separated by a gap. The first collimating lens collimates the light beam and outputs a collimated output beam via the its mirrored output surface to the opposing mirrored surface. A diaphragm coupled to a frame has a pair of piezo elements position the diaphragm to adjust the gap to select a predetermined wavelength signal from the collimated beam. A coupler samples a portion of the beam for a servo that responds to an input signal that identifies the wavelength to be selected. The servo provides a pathlength control signal to the piezo elements to coarse select the predetermined wavelength signal from the collimated output beam.

摘要翻译： 可调光滤波器系统从光纤接收光信号。 从光信号中选择预定的波长。 滤光器具有第一和第二对准的准直透镜，每个透镜具有由间隙分开的镜面。 第一准直透镜准直光束，并通过其镜像输出表面将准直的输出光束输出到相对的镜像表面。 耦合到框架的隔膜具有一对压电元件来定位隔膜以调整间隙以从准直光束中选择预定波长信号。 耦合器对波束的一部分采样以响应于识别要选择的波长的输入信号。 伺服器向压电元件提供路径长度控制信号，从准直输出光束粗选择预定波长信号。

公开(公告)号：US5430574A

公开(公告)日：1995-07-04

申请号：US279731

申请日：1994-07-25

申请人： Mohammad M. Tehrani

发明人： Mohammad M. Tehrani

IPC分类号： G02B5/20 ,  G02B26/00 ,  G01B9/02

CPC分类号： G02B26/001 ,  G02B5/20

摘要： The rugged filter/switch cavity includes at least a two section low thermal expansion glass tubular frame, each section with a highly polished edge for abutting engagement and rigid gripping by electrostatic attraction to maintain the cavity integrity. Each frame section supports a multi-layer low loss thin film mirror in opposing relation to define the cavity gap. One mirror is fixed in the first section and the other mirror is carried by a diaphragm portion of the other section for axial movement toward and away from the first mirror to tune the cavity to different frequencies. Coaxially aligned optical fibers, affixed to each section by flexible epoxy, guide light from a broadband source including, one or more signals, into the first section, through the first mirror and back and forth between mirrors until the cavity is resonant to a signal to be selected which signal then exits the cavity via the second mirror and the other optical fiber. The cavity is tuned by piezo electric transducers moving the diaphragm to change the gap. A predetermined potential applied to the transducers will select the desired filter frequency. To switch between signal frequencies, control means capable of exhibiting or storing potentials or control signals similarly selects the gap setting corresponding to the frequencies to be switched.

摘要翻译： 坚固的过滤器/开关腔包括至少两部分的低热膨胀玻璃管状框架，每个部分具有高度抛光的边缘，用于邻接接合，并通过静电吸引来刚性夹持以保持腔体的完整性。 每个框架部分支持相对关系的多层低损耗薄膜反射镜，以限定空腔间隙。 一个反射镜固定在第一部分中，另一个反射镜由另一个部分的隔膜部分承载，用于朝向和远离第一反射镜轴向移动以将腔体调谐到不同的频率。 同轴对准的光纤通过柔性环氧树脂固定到每个部分，将来自包括一个或多个信号的宽带源的光引导到第一部分中，通过第一反射镜并且在反射镜之间来回引导，直到腔谐振到信号 该信号然后经由第二反射镜和另一光纤离开空腔。 通过移动隔膜的压电换能器来调节空腔以改变间隙。 施加到换能器的预定电位将选择期望的滤波器频率。 为了在信号频率之间切换，能够呈现或存储电位或控制信号的控制装置类似地选择与要切换的频率相对应的间隙设定。