Optical bistability in an NLDFB device showing absorption: comparison of feedback efficiencies for different grating profiles and study of the behavior of aperiodic and nonperfect grating profiles

Author

Empsten, Annemie ; Veretennicoff, Irina

Author_Institution

Dept. of Appl. Phys., Vrije Univ., Brussels, Belgium

Volume

26

Issue

6

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

1089

Lastpage

1097

Abstract

The influence of the different parameters on the optical bistable behavior of a distributed feedback structure with an intensity-dependent refractive index is studied. Previous work is generalized toward two-dimensional waveguides, showing absorption. A general method is proposed to calculate the coupling coefficients up to a desired accuracy. This method is used to compare the feedback efficiency of sine, rectangular, and trapezoidal grating profiles. The numerical integration routine that was developed allows for the study of combinations of different nonlinear distributed feedback (NLDFB) structures. This is used to do a first investigation on the behavior of NLDFB devices with an aperiodic or nonperfect grating profile

Keywords

diffraction gratings; feedback; integrated optics; optical bistability; optical waveguide theory; refractive index; absorption; aperiodic grating profiles; coupling coefficients; distributed feedback structure; feedback efficiencies; grating profiles; integrated optical waveguide; intensity-dependent refractive index; nonlinear distributed feedback; nonperfect grating profiles; numerical integration; optical bistable; optical signal processor; rectangular grating profiles; sine grating profiles; trapezoidal grating profiles; Absorption; Distributed feedback devices; Gratings; Nonlinear optics; Optical bistability; Optical feedback; Optical refraction; Optical variables control; Optical waveguides; Refractive index;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.108104

Filename

108104