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Document Details
Document Type
:
Article In Journal
Document Title
:
Compact electro-absorption modulator integrated with vertical-cavity surface-emitting laser for highly efficient millimeter-wave modulation
Compact electro-absorption modulator integrated with vertical-cavity surface-emitting laser for highly efficient millimeter-wave modulation
Subject
:
physics
Document Language
:
English
Abstract
:
We demonstrate a compact electro-absorption slow-light modulator laterally-integrated with an 850 nm vertical-cavity surface-emitting laser (VCSEL), which enables highly efficient millimeter-wave modulation. We found a strong leaky travelling wave in the lateral direction between the two cavities via widening the waveguide width with a taper shape. The small signal response of the fabricated device shows a large enhancement of over 55 dB in the modulation amplitude at frequencies beyond 35 GHz; thanks to the photon-photon resonance. A large group index of over 150 in a Bragg reflector waveguide enables the resonance at millimeter wave frequencies for 25 mu m long compact modulator. Based on the modeling, we expect a resonant modulation at a higher frequency of 70 GHz. The resonant modulation in a compact slow-light modulator plays a significant key role for high efficient narrow-band modulation in the millimeter wave range far beyond the intrinsic modulation bandwidth of VCSELs
ISSN
:
0003-6951
Journal Name
:
APPLIED PHYSICS LETTERS
Volume
:
105
Issue Number
:
8
Publishing Year
:
1435 AH
2014 AD
Article Type
:
Article
Added Date
:
Sunday, July 30, 2017
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
Hamed (Dalir
(Dalir, Hamed
Investigator
Doctorate
Moustafa Ahmed
Ahmed, Moustafa
Researcher
Doctorate
Ahmed (Bakry
(Bakry, Ahmed
Researcher
Doctorate
Fumio (Koyama
(Koyama, Fumio
Researcher
Doctorate
Files
File Name
Type
Description
42351.pdf
pdf
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