COMPACT INP-BASED RING LASERS EMPLOYING MULTIMODE INTERFERENCE COUPLERS AND COMBINERS

Authors
VANROIJEN R PENNINGS ECM VANSTALEN MJN VANDONGEN T VERBEEK BH VANDERHEIJDEN JMM
Citation
R. Vanroijen et al., COMPACT INP-BASED RING LASERS EMPLOYING MULTIMODE INTERFERENCE COUPLERS AND COMBINERS, Applied physics letters, 64(14), 1994, pp. 1753-1755
Citations number
18
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
64
Issue
14
Year of publication
1994
Pages
1753 - 1755
Database
ISI
SICI code
0003-6951(1994)64:14<1753:CIRLEM>2.0.ZU;2-X
Abstract
Multimode interference (MMI) 3 dB couplers and MMI power combiners hav e been integrated with compact InP/InGaAsP ring lasers (R = 150 mum). Radiative loss from the curves is small, and MMI 3 dB couplers are sho wn to be more efficient than conventional Y junctions. In addition, we demonstrate improved efficiency by combining counterpropagating beams in a single output by means of a MMI combiner. Single mode spectral b ehavior, with 35 dB side mode suppression, has been measured and is ex plained as resulting from coupled cavities.