CROSSTALK REDUCTION IN INTERSECTING RIB WAVE-GUIDES

Citation
Mg. Daly et al., CROSSTALK REDUCTION IN INTERSECTING RIB WAVE-GUIDES, Journal of lightwave technology, 14(7), 1996, pp. 1695-1698
Citations number
11
Categorie Soggetti
Optics
ISSN journal
07338724
Volume
14
Issue
7
Year of publication
1996
Pages
1695 - 1698
Database
ISI
SICI code
0733-8724(1996)14:7<1695:CRIIRW>2.0.ZU;2-0
Abstract
A numerical study of the throughput and crosstalk in intersecting semi conductor rib waveguides was carried out using the beam propagation me thod, The fraction of the optical power that couples out of one input waveguide and into the crossed waveguide falls to below two percent fo r crossing angles greater than four degrees, A simple modification to the waveguide shape at the X-crossing region was found to reduce the c rosstalk for crossing angles between four and ten degrees, The crossta lk to throughput ratio is reduced by up to a factor of nine while the throughput is reduced by, at most, a few percent, In device structures that combine X-crossings with curved waveguide sections this permits greater design flexibility and improved overall loss and crosstalk per formance.