Abstract
The effect of channel-width chirping on near- and far-field intensity patterns of the six supermodes was investigated. The supermode discrimination was evaluated in various channel-chirped index guided laser arrays. The results show that the linearly channel-chirped laser array has very good supermode discrimination which is better than that of a uniform laser array, the V channel-chirped laser array has the smallest radiation angle of the fundamental supermode among the calculated arrays, and the asymmetrically V channel-chirped array has a very small radiation angle of the fundamental supermode, which is smaller than that of the uniform array and also allows for very good fundamental supermode discrimination against the higher-order supermodes, which is better than that of the V channel-chirped laser array.
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Kwon, KY. Effect of asymmetrical channel chirping on field intensity patterns of supermodes and modal discrimination in index guided laser arrays. J. Cent. South Univ. 21, 3513–3517 (2014). https://doi.org/10.1007/s11771-014-2330-8
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DOI: https://doi.org/10.1007/s11771-014-2330-8