liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Wide-aperture GaAs/AlGaAs multiple quantum well electro-optic modulators
Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden.
Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden.
Ågren, D., Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden.
Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden.
Show others and affiliations
2002 (English)In: Proceedings of SPIE, the International Society for Optical Engineering, ISSN 0277-786X, E-ISSN 1996-756X, Vol. 4947, 59-67 p.Conference paper, Published paper (Other academic)
Abstract [en]

We present design and fabrication methods for surface normal monolithic amplitude modulators with an aperture up to 14 × 14 mm2, a contrast ratio of 6:1 and for low driving voltages (=8 V). The modulators consist of undoped GaAs/AlGaAs quantum wells embedded in a Fabry-Perot (FP) resonance cavity grown by MOVPE. To improve the device performance the FP cavity, the period and thickness of the quantum well and doping concentration were optimised. Also, the dimension of the modulator were varied from 0.5 × 0.5 to 14 × 14 mm2. The results show that the yield of the modulators increases significantly when decreasing the size of the modulators. To remedy the low yield issue for wide aperture modulator, a pixelated approach was used to divide the mono pixel in a monolithic modulator into several pixels, for example from 4 to 48. The modulation speed of the modulators with different dimensions was characterised by electro-optic (EO) response measurements. The temporal optical response of the large modulators was satisfactory up to the order of MHz modulation frequency where the RC constant limited the performance. A few of the modulators with wide apertures are to be assembled into an optical link system for free-space communication.

Place, publisher, year, edition, pages
2002. Vol. 4947, 59-67 p.
Keyword [en]
Electro-optic modulator, Free-space optical communication, GaAs/AlGaAs quantum wells
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-46824DOI: 10.1117/12.470177OAI: oai:DiVA.org:liu-46824DiVA: diva2:267720
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

Open Access in DiVA

No full text

Other links

Publisher's full text
In the same journal
Proceedings of SPIE, the International Society for Optical Engineering
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 9 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf