Passive Resonator Fiber Optic Gyro Composed of Waveguide/Fiber-optic Devices with Schemes to Reduce Noises

由波导/光纤器件组成的无源谐振光纤陀螺，具有降噪方案

基本信息

批准号：
05555111
负责人：
HOTATE Kazuo
金额：
$ 8.38万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555111/
关键词：
FIBER OPTIC GYROS RESONATOR FIBER OPTIC GYROS INTEGRATED OPTICS NAVIGATION OPTICAL FIBER SENSORS コヒーレント光センシング

项目摘要

The purpose of this research is to develop a pasive resonator fiber optic gyro using waveguide-type or fiber-optic-type devices, and study the ways to include the countermeasures against several noise factors in the system. It is desirable to compose all the system with guided-wave devices for achieving stable operation of the gyro. The following research results have been obtained.[1] We have invented the new system configuration named "Digital serrodyne resonator fiber optic gyro, " in this study, in which the input optical frequency into the resonator is controlled by waveguide-type optical phase modulators with the driving waveform of sawtooth-shape having digital staircase slope. This waveform is easily generated by using an A/D converter. Using the gyro chip, which is an integrated optical waveguide devices on LiNbO3 substrate especially designed for interferometer fiber optic gyros, the experimental setup has been constructed. Rotation detection has been successfully demonstrate … More d by this setup.[2] The driving waveform has been shown to be generated by the digital logic. A/D and D/A converters with about 12 bits is enough for achieving 7 digits of the dynamic range, which is required for aircraft navigation. Is has also been shown that the backscattering induced noise and the optical Kerr effect induced drift can be reduced only by modifying the driving waveform for the phase modulators. The ways to reduce the drirt due to the poralization fluctuation and the Faraday effect through the earth magnetism have already been implemented into the system.[3] The resonators composed of twisted ordinaly single mode fiber have been made, which are stable from the view point of the poralization fluctuation. Experiments have confermed the stability.[4] Active resonator fiber optic gyros, utilizing the laser oscillation in the fiber ring resonator, have also been studied. Experimental setup of the Brillouin fiber optic gyro has been constructed, by which the rotation detection has been carried out successfully. Less

这项研究的目的是使用波导型或光纤型设备开发带有培根谐振器光纤陀螺仪，并研究对系统中几个噪声因子进行对策的方法。希望使用带有指导的波浪设备组成所有系统，以实现陀螺仪的稳定操作。已经获得了以下研究结果。[1]在这项研究中，我们发明了名为“数字锯齿状谐振器光纤陀螺仪”的新系统配置，其中输入光学频率由波导型光学相调节器控制，其中具有数字楼梯槽的锯齿形齿形的驱动波形。使用A/D转换器很容易生成此波形。使用Gyro芯片，该芯片是LINBO3底物上的集成波导设备，专为干涉仪光纤陀螺仪而设计，已经构建了实验设置。旋转检测已成功证明……该设置更多。[2]驱动波形已被证明是由数字逻辑生成的。具有约12位的A/D和D/A转换器足以实现7位动态范围的数字，这是飞机导航所需的。 IS还显示，只有通过修改相调节器的驱动波形，才可以减少反向散射诱导的噪声和光学KERR效应诱导的漂移。由于降低了波动的波动和通过地球磁性的法拉第效应，减少驾驶员的方法已经实施。[3]已经制作了由扭曲的普通单模式纤维组成的谐振器，从低校准波动的角度来看，它们稳定。实验赋予了稳定性。[4]使用纤维环谐振器中激光振荡的活性谐振光纤陀螺仪也已研究。已经构建了Brillouin光纤陀螺仪的实验设置，通过该设置成功进行了旋转检测。较少的