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High-performance modulator/integrated light sources grown by an in-plane band-gap energy-control technique

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Abstract

The low-chirp nature of external-modulator/integrated lasers makes them highly suitable for use in long-haul multigigabit dispersive-fiber communications.1-5 In constructing these devices, there are at least three requirements: low optical interconnection loss, sufficient electrical isolation between the modulator and the laser, and minimal light reflection at the modulator front facet. In this paper we show how to satisfy these requirements simultaneously without sacrificing device performance. As a result, we demonstrate a high-speed, highly efficient, and extremely low chirp integrated electroabsorption modulator/DFB laser. We also present a simple method for controlling the lasing wavelength of the individual integrated lasers, which is important in WDM applications.

© 1995 Optical Society of America

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