What is a ring resonator used for?

Because of their advantages of low cost and easy fabrication, ring resonators are used in many applications such as filters, oscillators, mixers, baluns, hybrids, magic Ts, couplers, and antennas. In addition, they have been successfully used to measure the phase velocity and dispersion of a microstrip line.

What is finesse in optical cavity?

The finesse of an optical resonator (cavity) is a measure for how narrow the resonances are in relation to their frequency distance: a high finesse means sharp resonances.

What is finesse in interferometer?

Finesse is a fast interferometer simulation program. For a given optical setup, it computes the light field amplitudes at every point in the interferometer assuming a steady state. To do so, the interferometer description is translated into a set of linear equations that are solved numerically.

What is finesse in Fabry Perot interferometer?

In order to have a measure of the sharpness the term finesse has been introduced. It is the ratio between the distance of two neighbour peaks (Fig. 3) and their halfwidth. The finesse of a Fabry-Pérot interferometer can be pushed up to > 200.

How does an optical ring resonator work?

In general a ring resonator consists of a looped optical waveguide and a coupling mechanism to access the loop. When the waves in the loop build up a round trip phase shift that equals an integer times 2π, the waves interfere constructively and the cavity is in resonance.

What is coefficient of finesse?

A coefficient describing the reflectivity of the mirrors in a Fabry-Perot interferometer and equal to. (1) where r is a Fresnel reflection coefficient from the Fresnel equations, so that the reflection and transmission ratios may be simply expressed as.

What is optical resonator in physics?

An optical resonator is needed to build up the light energy in the beam. The resonator is formed by placing a pair of mirrors facing each other so that light emitted along the line between the mirrors is reflected back and forth.

What is resonator in optical fiber?

An optical resonator (or resonant optical cavity) is an arrangement of optical components which allows a beam of light to circulate in a closed path. Such resonators can be made in very different forms.

What is complementary split ring resonator?

Abstract: Split Ring Resonators (SRR) and Complementary Split Ring Resonators (CSRR) are widely used to simulate metamaterial elements. Such elements are arranged uniformly in a periodic configuration and behave as artificial materials with unusual properties.