Numerical simulation of a dual frequency all-optical flip-flop based on a nonlinear semiconductor distributed feedback laser structure

Abstract

A new all-optical flip-flop generating light at two different wavelengths ${\lambda }_1$ (state “$a$”), or ${\lambda }_2$ (state “$b$”) was suggested. It consists of an active layer and a nonlinear wave-guiding layer. Two parallel nonlinear gratings having different periods and periodic negative nonlinearities exist along the propagation direction in the wave-guiding layer. In state “$a$,” the first grating provides the optical feedback for lasing, and the second grating is weak. In state “$b$,” due to optical nonlinearity, the first grating weakens, and the second one provides the optical feedback for lasing. The refractive index nonlinearity is due to the direct absorption of photons at the Urbach tail. The device is triggered from state “$a$” to state “$b$” and vise versa by input optical pulses of wavelengths ${\lambda }_2$ and ${\lambda }_1$, respectively. The time domain simulations show switching dynamics in nanosecond time scale.

©2012 Optical Society of America

Theoretical modeling of an improved all-optical flip flop based on a nonlinear semiconductor distributed feedback laser structure

Hossam Zoweil
Appl. Opt. 49(28) 5199-5204 (2010)

Fast all-optical flip-flop based on a single distributed feedback laser diode

Koen Huybrechts, Geert Morthier, and Roel Baets
Opt. Express 16(15) 11405-11410 (2008)

All-optical flip-flop based on nonlinear effects in fiber Bragg gratings

Mohammad Karimi, Majid Lafouti, Ali Asghar Amidiyan, and Jamshid Sabbaghzadeh
Appl. Opt. 51(1) 21-26 (2012)

Method of developing all-optical trinary JK, D-type, and T-type flip-flops using semiconductor optical amplifiers

Sisir Kumar Garai
Appl. Opt. 51(11) 1757-1764 (2012)

All-optical flip-flop operation based on bistability in V-cavity laser

Yingchen Wu, Yu Zhu, Xiaolu Liao, Jianjun Meng, and Jian-Jun He
Opt. Express 24(12) 12507-12514 (2016)