Patent Number: 7,715,094

Title: Optical fiber element and method for imparting non-reciprocity of light using the same

Abstract: The present invention provides a rare earth element-doped optical fiber amplifier having a function which allows to omit an optical isolator component, and a method for providing the optical non-reciprocity using the same. In the optical fiber, the optical fiber matrix material is a ferroelectric solid state material, and the ferroelectric solid state material is doped by a rare earth element such as erbium (Er) or thulium (Tm). The optical fiber is characterized by an optical amplification function and an optical non-reciprocity function.

Inventors: Tokura; Yoshinori (Tsukuba, JP), Shimada; Yoshiaki (Itabashi-ku, JP), Kaneko; Yoshio (Chiba, JP)

Assignee: Japan Science of Technology Agency

International Classification: H04B 10/17 (20060101); C03C 13/02 (20060101); G02F 1/05 (20060101); H04B 10/12 (20060101)

Expiration Date: 5/11/12018