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Temperature depende...
Temperature dependence of the spectral characteristics of distributed-feedback resonators
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- Calil Kores, Cristine (författare)
- KTH,Material- och nanofysik,Department of Applied Physics, School of Engineering Sciences, Roslagstullsbacken 21, 10691 Stockholm, Sweden
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- Ismail, Nur (författare)
- KTH,Material- och nanofysik
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- Geskus, Dimitri (författare)
- KTH,Material- och nanofysik
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Dijkstra, Meindert (författare)
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- Bernhardi, Edward (författare)
- KTH,Material- och nanofysik,Visiting scientist
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- Pollnau, Markus (författare)
- KTH,Material- och nanofysik,Advanced Technology Institute, Department of Electrical and Electronic Engineering, University of Surrey, Guildford GU2 7XH, UK
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(creator_code:org_t)
- 2018
- 2018
- Engelska.
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Ingår i: Optics Express. - 1094-4087. ; 26:4, s. 4892-4905
- Relaterad länk:
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https://doi.org/10.1...
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https://www.osapubli...
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https://kth.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We characterize the spectral response of a distributed-feedback resonator when subject to a thermal chirp. An Al2O3 rib waveguide with a corrugated surface Bragg grating inscribed into its SiO2 top cladding is experimentally investigated. We induce a near-to-linear temperature gradient along the resonator, leading to a similar variation of the grating period, and characterize its spectral response in terms of wavelength and linewidth of the resonance peak. Simulations are carried out, showing good agreement with the experimental results and indicating that the wavelength of the resonance peak is a result only of the total accumulated phase shift. For any chirp profile we are able to calculate the reflectivities at the resonance wavelength, and this information largely explains how the linewidth of the resonance changes. This result shows that the increase in linewidth is governed by the increase of the resonator outcoupling losses.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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