期刊
OPTICS LETTERS
卷 40, 期 9, 页码 2124-2126出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.40.002124
关键词
-
类别
资金
- Italian Ministry of Education and Research of BACKOP project [PON01_01209]
The transmission spectrum of a ring resonator enclosing a pi-phase shifted fiber Bragg grating (pi-FBG) shows a spectral feature at the Bragg wavelength that is much sharper than resonance of the pi-FBG alone, and that can be detected with a simple integrated cavity output technique. Hence, the resolution of any sensor based on the fitting of the pi-FBG spectral profile can be largely improved by the proposed configuration at no additional fabrication costs and without altering the sensor robustness. A theoretical model shows that the resolution enhancement attainable in the proposed closed-loop geometry depends on the quality factor of the ring resonator. With a commercial grating in a medium-finesse ring, a spectral feature 12 times sharper than the pi-FBG resonance is experimentally demonstrated. A larger enhancement is expected in a low-loss, polarization maintaining setup. (C) 2015 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据