Open AccessEnhanced gain measurement at mode singularities in InP-based photonic crystal waveguides
Author(s) -
Emilie Schwoob,
Henri Bénisty,
C. Weisbuch,
C. Cuisin,
E. Derouin,
O. Drisse,
Guang–Hua Duan,
L. Legouézigou,
O. Legouézigou,
F. Pommereau
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.001569
Subject(s) - photonic crystal , stopband , optics , materials science , optoelectronics , photonic integrated circuit , waveguide , physics , resonator
We present a method of direct measurement of spectral gain and corresponding data in photonic crystal waveguides defined in heterostructures on InP substrates. The method makes use of two photopumping beams, one for gain generation, the other for amplification probing. The results show a clear enhancement of gain at spectral regions of low-group velocity, namely at the edges of the so-called mini-stopband of a three-missing rows wide photonic crystal waveguide.