Abstract
The information carrying capacity of a lightwave transmission system can be increased using wavelength division multiplexing. In this scheme, instead of one laser beam, light at a few distinct wavelengths (or group of nonoverlapping wavelengths) generated by independent semiconductor lasers is combined (or multiplexed) into a single beam and transmitted through a fiber. We describe a new dual-wavelength laser structure where the emitting regions are sufficiently close so that the light at the two wavelengths can be directly coupled into a single-mode fiber without using a multiplexer.
© 1987 Optical Society of America
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