1.55 μm absorptive-grating complex-coupled distributed feedback lasers with high single-longitudinal-mode yield

Yuan Kuang Tu*, Chwan Yang Chang, Wei Lin, Ming Cheng Wang, Tian Tsorng Shi, Jau Yang Su, Sun Chien Ko, Zuon Min Chuang, Chi Yu Wang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

1 Scopus citations

Abstract

We report the fabrication and the performance of 1.55 μm InGaAsP/InP complex-coupled distributed feedback lasers with p-InGaAs absorptive grating. With an estimated coupling strength of 1.7, the single mode yield of devices with side mode suppression ratio larger than 30 dB is higher than 70%, and a side mode suppression ratio as high as 48 dB for a laser operating above twice threshold current is achieved. We have verified that the presence of loss-coupling can eliminate the mode degeneracy effectively, and the associated self-pulsation phenomenon can be overcome with reduced duty factor of the absorptive grating.

Original languageEnglish
Pages (from-to)61-67
Number of pages7
JournalJournal of the Chinese Institute of Electrical Engineering, Transactions of the Chinese Institute of Engineers, Series E/Chung KuoTien Chi Kung Chieng Hsueh K'an
Volume2
Issue number1
StatePublished - 02 1995
Externally publishedYes

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