We analyzed the effective scale factor of ring laser gyros with coupled cavities in a general way. The coupled cavities can be made of both an odd and even number of mirrors, or even fiber coil. Compared with the "zero-vector-area" design in previous publications, we use the propagation loss rather than transmittance and reflectivity of mirrors to characterize the coupled cavities, which are more universal and controllable. In addition, we found the area of the coupled cavities could further enhance the effective scale factor by 1 + l/L, where l and L are the round-trip length of the ring lasers and the coupled cavity, respectively. Therefore, the scheme using coupled cavities to enhance the sensitivity is more practical. These findings are important to realize highly sensitive ring laser gyros. (C) 2015 Optical Society of America
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机译：我们以一般方式分析了耦合腔的环形激光陀螺仪的有效比例因子。耦合腔可以由奇数和偶数的反射镜或什至光纤线圈制成。与以前的出版物中的“零矢量区域”设计相比，我们使用传播损耗而非反射镜的透射率和反射率来表征耦合腔，这种耦合腔更通用且可控制。此外，我们发现耦合腔的面积可以进一步将有效比例因子提高1 + l / L，其中l和L分别是环形激光器和耦合腔的往返长度。因此，使用耦合腔来增强灵敏度的方案更加实用。这些发现对于实现高灵敏度的环形激光陀螺仪很重要。 （C）2015年美国眼镜学会
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