1.3-μm polarization-insensitive optical amplifier structure based on coupled quantum wells

Yumin Zhang, P. Paul Ruden

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

We show that polarization-insensitive optical gain over a wide bandwidth can be realized in a coupled pseudomorphic multiple-quantum-well structure. The barrier width is chosen such that heavy-hole subbands are grouped tightly and light-hole subbands are widely separated in energy. For specific strain conditions, the uppermost valence subbands, which have large occupation probability and strongly contribute to the gain, consist of a single light-hole subband and a group of coupled heavy-hole subbands. This arrangement gives rise to balanced gains for the TE and TM polarizations. We present calculated results for 1.3-μm semiconductor optical amplifier structures based on bands calculated in the framework of an eight-band k·p model. Two different material systems are examined, InAlGaAs and GaInAsP, on InP substrates.

Original languageEnglish (US)
Pages (from-to)1509-1514
Number of pages6
JournalIEEE Journal of Quantum Electronics
Volume35
Issue number10
DOIs
StatePublished - Oct 1 1999

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