Sökning: WFRF:(Agren B) > (2000-2004) > Wide-aperture GaAs/...
Fältnamn | Indikatorer | Metadata |
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000 | 03342naa a2200409 4500 | |
001 | oai:DiVA.org:liu-46824 | |
003 | SwePub | |
008 | 091011s2002 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-468242 URI |
024 | 7 | a https://doi.org/10.1117/12.4701772 DOI |
040 | a (SwePub)liu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a vet2 swepub-contenttype |
072 | 7 | a kon2 swepub-publicationtype |
100 | 1 | a Wang, Q.u Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden4 aut |
245 | 1 0 | a Wide-aperture GaAs/AlGaAs multiple quantum well electro-optic modulators |
264 | 1 | b SPIE,c 2002 |
338 | a print2 rdacarrier | |
520 | a 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. | |
653 | a Electro-optic modulator | |
653 | a Free-space optical communication | |
653 | a GaAs/AlGaAs quantum wells | |
653 | a NATURAL SCIENCES | |
653 | a NATURVETENSKAP | |
700 | 1 | a Junique, S.u Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden4 aut |
700 | 1 | a Agren, D.u Ågren, D., Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden4 aut |
700 | 1 | a Noharet, B.u Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden4 aut |
700 | 1 | a Malm, H.u Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden4 aut |
700 | 1 | a Borglind, J.u Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden4 aut |
700 | 1 | a Andersson, J.u Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden4 aut |
700 | 1 | a Sjoqvist, L.4 aut |
700 | 1 | a Ohgren, J.4 aut |
710 | 2 | a Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Swedenb Ågren, D., Optical Engineering Department, Acreo AB, Electrum 236, 164 40 Kista, Sweden4 org |
773 | 0 | t Proceedings of SPIE, the International Society for Optical Engineeringd : SPIEg 4947, s. 59-67q 4947<59-67x 0277-786Xx 1996-756X |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-46824 |
856 | 4 8 | u https://doi.org/10.1117/12.470177 |
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