Abstract

We present for the first time to our knowledge a new and simple single-mode optical-fiber double-loop resonator. The double-loop resonator consists of two fiber loops constructed from a nonplanar 3 × 3 directional fiber coupler and two fiber delay lines. When the lengths of the fiber loops are different, additional periodic-resonance notches appear. The depths and the positions of these notches depend on the difference between the phase changes, and the coupling of the two fiber loops. This double-loop resonator can be used as a spectral filter and a sensor.

© 1994 Optical Society of America

Analysis of optical-fiber loop resonators with a collinear 3 × 3 fiber coupler

Y. H. Ja
Appl. Opt. 33(27) 6402-6408 (1994)

Kerr bistability in an optical fiber ring resonator with a 3 × 3 planar fiber coupler

Y. H. Ja
Appl. Opt. 33(30) 7009-7012 (1994)

Optical vernier filter with two single 3 × 3 planar coupler fiber ring resonators in tandem

Y. H. Ja
Appl. Opt. 33(27) 6409-6411 (1994)

Experimental study of a bow-tie-shaped optical fiber ring resonator with two 2 × 2 fiber couplers

Y. H. Ja, X. Dai, and L. N. Binh
Appl. Opt. 33(24) 5594-5601 (1994)

Elimination of Kerr bistability in an optical fiber ring resonator with a 3 × 3 planar fiber coupler

Y. H. Ja
Appl. Opt. 33(30) 7013-7015 (1994)