光学学报, 1988, 8 (8): 751, 网络出版: 2011-09-16
用于光纤Sagnac干涉仪的全息耦合器
Holographic coupler for fiber-optic Sagnac interferometer
全息光学元件 光纤耦合器 干涉仪 光纤传感器 holographic-optic elements optic-fiber coupler interferometer fiber-optic sensor
摘要
我们利用重铬酸明胶作为全息记录介质,制得了分光比接近1:1,总衍射效率超过60%的双重全息透镜.本文讨论了这种全息透镜作为Sagnac光纤干涉仪的耦合器的优点,并给出了初步的实验结果.本文还推导了倾斜光栅的Q因子,提出了全息光栅的等效Bragg定律,并通过它们设计出所需的全息透镜.
Abstract
The crucial parts of a fiber-optic sensor (FOS) are 3dB couplers. It is a novel idea that a holographic lens is made as the coupler for a fiber-optic gyro. Theoretically we explored the possibility of this way and achieved it experimentally. According to Kogelnik s Coupled Wave Theory, under the Bragg condition, the diffraction efficiency of transmission holographic gratings, whose recording material is fit for certain conditions, theoretically, is up to 100%.
邹运庐, 徐大雄. 用于光纤Sagnac干涉仪的全息耦合器[J]. 光学学报, 1988, 8(8): 751. ZOU YUNLU, HSC DAHSIUNG. Holographic coupler for fiber-optic Sagnac interferometer[J]. Acta Optica Sinica, 1988, 8(8): 751.