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For widespread introduction of 2.5- and 10-Gbit/s communication over existing land-line links, a low-cost, high-volume, high-performance optical transmitter is required. An integrated laser modulator (ILM) improves both cost and reliability because packaging is reduced, polarization control is eliminated, and the electrical drive is simplified. Recently, we demonstrated, for the first time to our knowledge, extended transmission by using a discrete electroabsorption modulator with negative chirp.1 The chirp in an ILM is more complicated because light reflected from the modulator output facet can change the laser frequency.2,3
© 1995 Optical Society of America
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