Fiber Faraday circulator or isolator.
We demonstrate a Faraday circulator or isolator that uses a silica-core, single-mode, birefringent fiber as the active medium and small permanent magnets for the magnetic field. Circulators were constructed for wavelengths of 632.8 and 830 nm using about 2 m of fiber. This is the first description to our knowledge of such potentially useful working devices made in birefringent fiber. Bandwidth and temperature dependence were also investigated.
Turner
E H
EH
Bell Laboratories, Holmdel, New Jersey 07733, USA.
Stolen
R H
RH