掺铽纤芯磷酸盐光纤中的有效费尔德常数

Effective Verdet constant in a terbium-doped-core phosphate fiber.

作者信息

Sun L, Jiang S, Zuegel J D, Marciante J R

机构信息

Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, New York 14623, USA.

出版信息

Opt Lett. 2009 Jun 1;34(11):1699-701. doi: 10.1364/ol.34.001699.

DOI:10.1364/ol.34.001699

PMID:19488153

Abstract

The concept of an effective Verdet constant is proposed and experimentally validated. The effective Verdet constant of light propagation in a fiber includes contributions from the materials in both the core and the cladding. It is measured in a 25 wt.% terbium-doped-core phosphate fiber to be -6.2+/-0.4 rad/(Tm) at 1,053 nm, which is six times larger than silica fiber. The result agrees well with Faraday rotation theory in optical fiber.

摘要

提出了有效费尔德常数的概念并通过实验进行了验证。光在光纤中传播的有效费尔德常数包括纤芯和包层中材料的贡献。在一根25 wt.%掺铽纤芯磷酸盐光纤中测得，在1053 nm波长处其值为-6.2±0.4 rad/(Tm)，比石英光纤大六倍。该结果与光纤中的法拉第旋转理论吻合得很好。