University of Surrey

Test tubes in the lab Research in the ATI Dance Research

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.

Full text not available from this repository.


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
Divisions : Surrey research (other units)
Authors :
Chan, SP
Masanovic, GZ
Howe, S
Date : 2006
DOI : 10.1117/12.652210
Contributors :
Kubby, JA
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 : 24 Jan 2020 20:35

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800