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Experimental evidence of modal properties using directional couplers in silicon-on-insulator - art. no. 61250N

Reed, GT, Headley, WR, Chan, SP, Masanovic, GZ, Howe, S and Thomson, D (2006) Experimental evidence of modal properties using directional couplers in silicon-on-insulator - art. no. 61250N Silicon Photonics, 6125, 61250N. N1250-N1250.

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Abstract

The single-mode optical rib waveguide is a fundamental building block for many, more complex optical circuits. Recent modelling has been provided in the literature that has investigated polarisation and modal properties of small, deeply-etched rib waveguides in SOL In this paper we present work that has utilised a total of 160 directional couplers fabricated from rib waveguides of various waveguides dimensions, to investigate the validity of the published modelling. In particular 5 waveguide designs have been used to fabricate directional couplers of differing lengths, to map out the variation in coupling of power within the directional couplers. For a singlemode device, a characteristic sinusoidal variation is expected, but the sinusoid will be corrupted in the presence of higher order modes, each of which will have a different coupling length as compared to the fundamental mode. We have observed experimental results that are consistent with the modelling for each of the 5 waveguide designs, and hence we present experimental evidence of higher-order mode behaviour that is consistent with modelling.

Item Type: Article
Authors :
NameEmailORCID
Reed, GTg.reed@surrey.ac.ukUNSPECIFIED
Headley, WRw.headley@surrey.ac.ukUNSPECIFIED
Chan, SPUNSPECIFIEDUNSPECIFIED
Masanovic, GZUNSPECIFIEDUNSPECIFIED
Howe, SUNSPECIFIEDUNSPECIFIED
Thomson, Dd.thomson@surrey.ac.ukUNSPECIFIED
Date : 2006
Identification Number : 10.1117/12.652210
Contributors :
ContributionNameEmailORCID
UNSPECIFIEDKubby, JAUNSPECIFIEDUNSPECIFIED
UNSPECIFIEDReed, GTg.reed@surrey.ac.ukUNSPECIFIED
Uncontrolled Keywords : Silicon-On-Insulator (SOI), directional couplers, silicon photonics, rib waveguides, single-mode condition, RIB WAVE-GUIDES, SINGLE-MODE, CROSS-SECTION, MODULATOR, RESONATORS
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 11:15
Last Modified : 17 May 2017 14:55
URI: http://epubs.surrey.ac.uk/id/eprint/830640

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