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 TypeDr GradeEmail
Hamed (Dalir(Dalir, Hamed InvestigatorDoctorate 
Moustafa AhmedAhmed, Moustafa ResearcherDoctorate 
Ahmed (Bakry(Bakry, Ahmed ResearcherDoctorate 
Fumio (Koyama(Koyama, Fumio ResearcherDoctorate 

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