Abstract

Gain coupled distributed feedback lasers have recently received both experimental¹ and theoretical² attention. This structure offers a number of potential advantages such as: increased yield of single mode lasers (due to lifting of the degeneracy present in index coupled structures), reduced longitudinal spatial holeburning (due to a flat intensity profile), and reduced feedback sensitivity. It is the objective of this paper to present analytical results for a number of important device properties, these results are of significant interest for the design of gain coupled DFB lasers.

© 1991 Optical Society of America