Characterization of distributed modal birefringence in a few-mode fiber based on Brillouin dynamic grating.
نویسندگان
چکیده
We propose and demonstrate generation of Brillouin dynamic grating (BDG) in a few-mode fiber (FMF) with a Gaussian pulse pump and a counterpropagating continuous wave pump in LP01 mode. Brillouin optical time-domain analysis (BOTDA) is achieved by launching a third Gaussian pulse probe in LP11 mode. With coherent detection and time-domain analysis on the backreflected probe signal, the modal birefringence of the FMF is characterized via the distributed BDG with high spatial resolution and high accuracy.
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ورودعنوان ژورنال:
- Optics letters
دوره 39 11 شماره
صفحات -
تاریخ انتشار 2014