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Photothermally tunable silicon-microring-based optical add-drop filter through integrated light absorber
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO. Nanjing University, China.
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Optics and Photonics, OFO.
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2014 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 22, no 21, p. 25233-25241Article in journal (Refereed) Published
Abstract [en]

An optically pumped thermo-optic (TO) silicon ring add-drop filter with fast thermal response is experimentally demonstrated. We propose that metal-insulator-metal (MIM) light absorber can be integrated into silicon TO devices, acting as a localized heat source which can be activated remotely by a pump beam. The MIM absorber design introduces less thermal capacity to the device, compared to conventional electrically-driven approaches. Experimentally, the absorber-integrated add-drop filter shows an optical response time of 13.7 mu s following the 10%-90% rule (equivalent to a exponential time constant of 5 mu s) and a wavelength shift over pump power of 60 pm/mW. The photothermally tunable add-drop filter may provide new perspectives for all-optical routing and switching in integrated Si photonic circuits.

Place, publisher, year, edition, pages
2014. Vol. 22, no 21, p. 25233-25241
Keywords [en]
Free Spectral Range, Electrooptic Modulator, Ring Resonators, Wave-Guides, Chip, Compact, Switch
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Identifiers
URN: urn:nbn:se:kth:diva-157000DOI: 10.1364/OE.22.025233ISI: 000344004600061PubMedID: 25401557Scopus ID: 2-s2.0-84908191367OAI: oai:DiVA.org:kth-157000DiVA, id: diva2:769069
Funder
Swedish Foundation for Strategic Research Swedish Research Council
Note

QC 20141205

Available from: 2014-12-05 Created: 2014-12-04 Last updated: 2017-12-05Bibliographically approved

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Yan, MinWosinski, Lech

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