Performance of a phased array semiconductor laser source for coherent laser communications

David K. Probst; Robert R. Rice

doi:10.1117/12.43765

1 June 1991 Performance of a phased array semiconductor laser source for coherent laser communications

David K. Probst, Robert R. Rice

Proceedings Volume 1417, Free-Space Laser Communication Technologies III; (1991) https://doi.org/10.1117/12.43765
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

A semiconductor laser phased-array transmitter is described that operates by coherently combining the output of many semiconductor laser amplifiers to form a near-diffraction-limited beam in the far field with sufficient power for most free-space optical communications applications. Because the outputs of the amplifiers are coherently combined, modulation formats requiring coherent detection can be used with this type of transmitter. A one-dimensional phased array of semiconductor optical amplifiers is used to amplify a 200 Mbps PSK signal which is then detected using a self-homodyne technique. The communications performance when the phased array is used is not degraded compared to the performance when the array is not used. In addition, the array introduces no additional phase noise to cause performance degradation.

Citation Download Citation

David K. Probst and Robert R. Rice "Performance of a phased array semiconductor laser source for coherent laser communications", Proc. SPIE 1417, Free-Space Laser Communication Technologies III, (1 June 1991); https://doi.org/10.1117/12.43765

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