Increased bit rate in a soliton system with quantum-well Fabry-Perot phase modulators

Arumona Edward Arumona, Anita Garhwal, Phichai Youplao +4 more

An electron cloud spectroscopy system consisting of a microring and Bragg grating Fabry-Perot is proposed. It has the form of a Panda-ring formed by an add-drop filter with nonlinear two-phase modulators. The input light of 1.50μm center wavelength is fed into the system. By using suitable two-phase modulator parameters, the whispering gallery mode (WGM) of light is formed at the center ring. The gold plate at the center microring illuminated by light leads to electron cloud oscillations forming the electron density that results in the spin up and spin down of electrons. The electron cloud spins (spin up and spin down) form the qubits which can be transmitted to the Fabry-Perot sensing unit by the spin waves. The Fabry-Perot sensing unit measures the spectral profile of the electron cloud spins. To observe the spectral profile of the electron cloud spins a large bandwidth is employed. The space-time function is applied to distinguish the electron cloud spins, which leads to having the selected spin switching time and sensor sensitivity resolution. By varying the input power and the gold grating gaps, the change in optical path difference formed in terms of the electron cloud spins at the center ring, where the optimum of ~10Pbit is obtained. Both the reflection and transmission schemes of the microring Fabry-Perot circuit have bit rates of ~6Pbits-1. The reflection and transmission spectra have a free spectral range of ~0.04-0.14μm. The optimum sensitivity of the microring Fabry-Perot sensor is 0.31μ m-1.

Ali Hassan Khidhir

The analytical study of optical bistability is concerned in a fullyoptimized laser Fabry-Perot system. The related phenomena ofswitching dynamics and optimization procedure are also included.From the steady state of optical bistability equation can plot theincident intensity versus the round trip phase shift (φ) for differentvalues of dark mistuning 12,6,3,1.50 , o    or finesse (F= 1, 5, 20,100). In order to obtain different optical bistable loops. The inputoutputcharacteristic for a nonlinear Fabry-Perot etalon of a differentvalues of finesse (F) and using different initial detuning (φ0) are usedin this research. When the cavity finesse values increase, the switch-ON intensity increases for the same value of (φ0), because thebistable loop width increases with increasing the cavity finessevalues.

A. N. Pilipetskiǐ, Curtis R. Menyuk

Garrett Hickman, T. B. Pittman, J. D. Franson

We describe a nonlinear Fabry-Perot interferometer useful for optical quantum information applications. We observe self-phase modulation and other nonlinear effects with ultra-low input powers using metastable xenon in a high-finesse cavity.

Giulia Marcucci, Claudio Conti, Simone Montangero +1 more