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Compact silicon-based wavelength-selective photonic integrated devices and the applications
Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, East Bldg 5,Zijingang Campus, Hangzhou 310058, Zhejiang, Peoples R China..
2009 (English)In: SILICON PHOTONICS IV / [ed] Kubby, JA Reed, GT, SPIE-INT SOC OPTICAL ENGINEERING , 2009, article id UNSP 72200DConference paper, Published paper (Refereed)
Abstract [en]

In wavelength-division multiplexing systems, it is important to develop various wavelength-selective components to have flexible and reconfigurable nodes. When using conventional optical waveguides with low index contrast, the sizes of these wavelength-selective components are usually several cm(2), which is too large to integrate more components in a single wafer or chip. In order to improve the integration density and reduce the cost, it is desirable to minimize the component sizes. In our case, two kinds of strongly-confined optical waveguides on silicon wafer are considered for compact wavelength-selective devices. One is the popular silicon-on-insulator (SOI) nanowire and the other is SU-8 strip optical waveguide with an air cladding and a SiO2 insulator layer on a Si substrate. In this paper, we give a review of our recent work on wavelength-selective photonic integrated devices based on these two kinds of silicon-based optical waveguides with strong-confinements. Arrayed-waveguide grating (AWG) and microring resonator (MRR), which are two typical wavelength-selective components are included. First we give a review for several new layouts for SOI-nanowire AWG to have a further size-reduction and our novel designs for diminishing the polarization dependency of AWGs. Secondly we present the design and fabrication of multimode interference (MMI) couplers for MRRs. A novel design method for tapered MMI couplers is presented and the diminishment of polarization in a MMI coupler is proposed by optimizing the tapered MMI section. We also present our experimental results on optical sensor combining MRRs and micro-fluid channel. The measured sensitivity is about 180nm/RIU.

Place, publisher, year, edition, pages
SPIE-INT SOC OPTICAL ENGINEERING , 2009. article id UNSP 72200D
Series
Proceedings of SPIE, ISSN 0277-786X ; 7220
Keywords [en]
Arrayed waveguide grating (AWG), microring resonator (MRR), multimode interference (MMI), silicon, SU-8
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-242880DOI: 10.1117/12.808474ISI: 000285748000011Scopus ID: 2-s2.0-66749185311ISBN: 978-0-8194-7466-7 (print)OAI: oai:DiVA.org:kth-242880DiVA, id: diva2:1289180
Conference
Conference on Silicon Photonics IV, JAN 26-28, 2009, San Jose, CA
Note

QC 20190215

Available from: 2019-02-15 Created: 2019-02-15 Last updated: 2019-02-15Bibliographically approved

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He, Sailing

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