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Ultrasmall thermally tunable microring resonator with a submicrometer heater on Si nanowires
KTH, Skolan för elektro- och systemteknik (EES), Elektroteknisk teori och konstruktion.ORCID-id: 0000-0002-3401-1125
2008 (Engelska)Ingår i: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 26, nr 5-8, s. 704-709Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

An ultracompact widely tunable thermooptical (TO) microring resonator (MRR) filter based on Si nanowires is presented. The Si nanowire waveguide has a SiO2 insulator, Si core, a SiO2 up-cladding, and a thin metal film at the top. The metal circuit along the microring is used as a submicrometer heater which has the same width as the Si nanowire waveguide. The up-cladding is optimized to reduce the light absorption of the metal as well as to have a good heat-conduction from the heater to the Si core. Two pads used as the contact points for the probes connecting to the electrical power are perpendicularly connected to the microring by using optimized T-junctions (with a low excess loss of about 0.06 dB per T-junction). With such a design, the present thermally tunable microring resonator (MRR) can be fabricated by using a standard fabrication process with a single lithography process, which is much simpler than the fabrication with double lithography processes used for the conventional TO components. Finally, the simulation results show that the designed MRR has a wide tuning range of about 20 nm with a low heating power of 5 mW.

Ort, förlag, år, upplaga, sidor
2008. Vol. 26, nr 5-8, s. 704-709
Nyckelord [en]
filter, microring, nanowire, resonator, Si, thermal, tunable, silicon-on-insulator, wire wave-guides, ring resonators, fabrication, technology, wavelength, filters, switch, power
Identifikatorer
URN: urn:nbn:se:kth:diva-17455DOI: 10.1109/jlt.2007.915274ISI: 000255006000028Scopus ID: 2-s2.0-42649100999OAI: oai:DiVA.org:kth-17455DiVA, id: diva2:335499
Anmärkning
QC 20100525Tillgänglig från: 2010-08-05 Skapad: 2010-08-05 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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