Topic
Equilibrium mode distribution
About: Equilibrium mode distribution is a research topic. Over the lifetime, 928 publications have been published within this topic receiving 14939 citations.
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TL;DR: In this paper, a scheme for on-chip optical mode conversion in a hybrid photonic-phononic waveguide is presented, where both propagation of optical and acoustic wave can be tightly confined in the hybrid waveguide, and the acousto-optical interaction can be enhanced to realize optical modes conversion within a chip-scale size.
Abstract: We present a scheme for on-chip optical mode conversion in a hybrid photonic-phononic waveguide. Both
propagating optical and acoustic wave can be tightly confined in the hybrid waveguide, and the acoustooptical
interaction can be enhanced to realize optical mode conversion within a chip-scale size. The
theoretical model of the acousto-optic interaction is established to explain the mode conversion. The
numerical simulation results indicate that the high efficient mode conversion can be achieved by adjusting
the intensity of the acoustic wave. We also show that the mode conversion bandwidth can be dramatically
broadened to 13 THz by adjusting the frequency of the acoustic wave to match phase condition of the
acousto-optic interaction. This mode converter on-chip is promising in order to increase the capacity of
silicon data busses for on-chip optical interconnections.
01 Jan 2017
TL;DR: In this article, it was shown that the light of both modes is inthe squeezed state (the variances are less than one) in the surrounding of the points in which the coherent component of the second mode has maximum.
Abstract: It is possible to prove that the light of both modes is inthe squeezed state (the variances are less than one) in thesurroundings of the points in which the coherent componentof the second mode has maximum. If the input field is strongenough then the sqeezing is very expressive. In additionfrom the results follows that for any length of the opicalfiber is possible to find such intesity of the input light,that the output light is in the squeezed state [2]. Thismeans that any piece of a single mode optical fiber can be a
Journal Article•
TL;DR: Theoretical analysis of laser transverse mode competition is investigated in this article from the perspective of the spetial overlap of modes with a transverse gain-loss distribution, where the dominant mode is the mode that is stable under small perturbations.
Abstract: Theoretical of multiple transverse mode laser oscillation involving spatially varying gain and loss are investigated. The effect of gain and loss distribution on mode competition is analyzed. A theoretical analysis of laser transverse mode competition is investigated from the perspective of the spetial overlap of modes with a transverse gain-loss distribution. The dominant mode of laser oscillation is the mode that is stable under small perturbations.
TL;DR: In this article, noise-like ultra-short soliton pulses train of 72fs without CW components were observed from Figure-8 passively modelocked fiber laser; noiselike bound states of asymmetrical solitons train with pulse width of 103fs and separation of======585.5fs are also observed.
Abstract: Noise-like ultra-short soliton pulses train of 72fs without CW components are observed from Figure-8 passively mode
locked fiber laser; noise-like bound states of asymmetrical solitons train with pulse width of 103fs and separation of
585.5fs are also observed. The bound soliton separation and pulsewidth keep unchanged even after 1.2Km Single Mode
Fiber transmission.
07 May 2006
TL;DR: In this paper, a mode expansion approach is proposed to simulate the active mode locked laser, where electric fields of optical modes in the laser cavity are treated as free classical oscillators, and the optical modulator provides the coupling among the modes or oscillators.
Abstract: Mode expansion approach is proposed to simulate the active mode locked laser. In this method, electric fields of optical modes in the laser cavity are treated as free classical oscillators. The optical modulator provides the coupling among the modes or oscillators. It is found that the eigenvalue of this coupled system is corresponding to the threshold optical gain and normal mode or eigenfunction is corresponding to optical field of each mode. The simulation results obtained by mode expansion method agree with those calculated by the well- known Master equation, which provides an analytical solution with a function similar to the quantum harmonic oscillator. However, since the proposed method focuses on the individual mode and its coupling with the other modes instead of mode profile in general, it gives more information than Master equation. To show the capability of the new method, several applications are explored where Master equation fails to solve the problems. It is believed that the proposed method will help design the devices such as optical pulse generator, multi-wavelength laser and therefore will have great application in optical signal generation and processing.