Open AccessArrays of vertical-cavity electroabsorption modulators for parallel signal processing
Author(s) -
Qin Wang,
Stéphane Junique,
Daniel Ågren,
Susanne Almqvist,
Bertrand Noharet
Publication year - 2005
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.13.003323
Subject(s) - materials science , optics , modulation (music) , wafer , optoelectronics , signal (programming language) , signal processing , fabrication , physics , telecommunications , computer science , medicine , radar , alternative medicine , pathology , acoustics , programming language
Vertical-cavity multiple quantum well electroabsorption modulators (EAM) offer gigahertz modulation speeds, insensitivity to light polarisation and can be integrated into large arrays. They are therefore good candidates for efficient parallel signal processing architectures. We present high-performance 2 x 128 and 2 x 64 EAM arrays that were fabricated at 4'' wafer-scale by using optimised fabrication and hybridisation processes. The arrays exhibit contrast ratios of 20:1 with a voltage swing of 1 V, a maximum contrast ratio of 335:1 for a 10 V bias and a modulation frequency in excess of 15 MHz.