Optical multistability in a fiber-optic passive-loop resonator

Enhanced all-optical switching by use of a nonlinear fiber ring resonator

“…In 1982 the linear optical properties of such a device were described, 2 and since then the power-transfer characteristics have found application primarily in interferometric sensing, 2 and the phase-transfer characteristics of such devices have been applied to dispersion compensation. 3 Also, many applications have been demonstrated that use nonlinear ring resonators as differential amplifiers 4 and bistable optical elements 5 in which the device operation relies primarily on the nonlinear power-transfer characteristics of the resonators. To the best of our knowledge the nonlinear phasetransfer characteristics of the device have not been previously studied.…”

Studies on passively Q-switched ytterbium doped all-fiber laser using fiber optic ring resonator

“…In contrast, fiber optic ring resonators (FORRs) [18][19][20] have attracted research interest mainly due to their application as nonlinear optical devices such as optical switches, detection of inertial rotation by fiber based gyro and also as saturable absorbers [21][22][23][24] at relatively low power. Several other nonlinear optical phenomenon including instability, bistability, multistability, optical limiting etc have been studied in FORRs [25][26][27]. FORR has also been used to demonstrate switchable Q-switching and mode locking operation in YDF laser [24].…”

On the existence condition for bistability in a one‐coupler optical fiber ring resonator by using degenerate two‐wave mixing

“…One obvious difference between the DTWM bistability and other types of optical bistabilities caused by self-focusing or self-trapping [3] and optical Kerr effect [4,51 is the use of an additional beam, that is, the pump beam. Use of the pump beam results in the special property that the DTWM bistability can occur at any intensity level of the input, because it depends only on the intensity ratio of the input to pump beam [l].…”

“…Studies of a coaxial-line-fed monopole embedded in a dielectric resonator of cylindrical or spherical shape are found in recent literature [l, 21. Attempts to excite a dielectric resonator as an antenna by a microstrip line and coplanar waveguide have been reported [3,4]. A resonator by definition is a device for energy storage, not radiation.…”