Abstract

We present a new form of all-fiber frequency shifter based on the use of an all-fiber ring resonator as a high-resolution filter illuminated by a phase-modulated input beam. The configuration offers a frequency-tunable output with complete suppression of the unshifted light component and extremely high suppression of unwanted sidebands. A maximum frequency conversion efficiency of 17% has been measured, with sidebands at −40 dB.

© 1992 Optical Society of America

All-fiber acousto-optic frequency shifter

B. Y. Kim, J. N. Blake, H. E. Engan, and H. J. Shaw
Opt. Lett. 11(6) 389-391 (1986)

All-fiber optical frequency shifter

A. P. Foord, P. A. Greenhalgh, and P. A. Davies
Opt. Lett. 16(6) 435-437 (1991)

Technique for translating light-wave frequency by using an optical ring circuit containing a frequency shifter

Kaoru Shimizu, Tsuneo Horiguchi, and Yahei Koyamada
Opt. Lett. 17(18) 1307-1309 (1992)

Continuously tunable ring laser with nonreciprocal frequency shifters

H. Sabert and R. Ulrich
Opt. Lett. 18(11) 873-875 (1993)

In-line acousto-optic frequency shifter in two-mode fiber

O. Lisbôa and S. L. A. Carrara
Opt. Lett. 17(2) 154-156 (1992)