Title :
A new interferometric sensor with ring-feedback MZI
Author :
Chao, Chung-Yen ; Guo, L. Jay
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
An interferometric sensor configuration is proposed. This configuration is modified from a conventional Mach-Zehnder interferometer (MZI) with a provision of a feedback path. Such scheme possesses large transmission intensity change with a small phase unbalance between two arms of MZI. This property can greatly enhance the sensitivity by one to two order of magnitude compared with a traditional MZI-based sensor. The same configuration can be further enhanced in slope and detection range with introduction of small gain into the feedback path.
Keywords :
Mach-Zehnder interferometers; feedback; optical sensors; MZI-based sensor; Mach-Zehnder interferometer; interferometric sensor; large transmission intensity; phase unbalance; ring-feedback MZI; Arm; Optical feedback; Optical interferometry; Optical refraction; Optical scattering; Optical sensors; Optical surface waves; Optical variables control; Optical waveguides; Transmission line matrix methods;
Conference_Titel :
Sensors, 2003. Proceedings of IEEE
Print_ISBN :
0-7803-8133-5
DOI :
10.1109/ICSENS.2003.1279002
