Nonreciprocal intensity transmission in optical fibers can be realized by use of an asymmetric fiber taper. A few-mode fiber taper-based nonreciprocal component is designed, and its nonreciprocal transmission characteristics are demonstrated. This structure can be employed to build polarization-independent all-fiber isolators or fiber-optic sensors.
© 1996 Optical Society of America
Xiaojun Fang, "Polarization-independent all-fiber isolator based on asymmetric fiber tapers," Opt. Lett. 21, 1792-1794 (1996)