Sirkis J S, Brennan D D, Putman M A, Berkoff T A, Kersey A D, Friebele E J
Opt Lett. 1993 Nov 15;18(22):1973-5. doi: 10.1364/ol.18.001973.
A description and demonstration of a fiber interferometer that uses a short segment of silica hollow-core fiber spliced between two sections of single-mode fiber to form a mechanically robust in-line cavity are presented. The hollow-core fiber is specifically manufactured to have an outer diameter that is equal to the outer diameter of the single-mode lead fibers, thereby combining the best qualities of existing intrinsic and extrinsic Fabry-Perot sensors. A dynamic strain resolution of ~22 nepsilon/ radicalHz at frequencies of >5 Hz with a sensor gauge length of 137 microm is demonstrated.
本文介绍并演示了一种光纤干涉仪，该干涉仪使用一段短的二氧化硅空心光纤，将其拼接在两段单模光纤之间，以形成一个机械坚固的在线腔。空心光纤经过特殊制造，其外径与单模引线光纤的外径相等，从而结合了现有本征和非本征法布里 - 珀罗传感器的最佳特性。在传感器标距长度为137微米的情况下，展示了在频率大于5赫兹时约22纳应变/根号赫兹的动态应变分辨率。
