Fourth-order dispersion compensation for 250-fs pulse transmission over 139-km optical fiber
- 1 July 2000
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 12 (7) , 795-797
- https://doi.org/10.1109/68.853503
Abstract
Record distance transmission of 250-fs pulses over 139-km optical fiber at 6-GHz repetition is realized by compensating chromatic dispersion up to fourth-order using a novel approach. The link is designed combining 108.5-km standard single-mode fiber (SMF), 17.5-km dispersion-shifted fiber, and 13-km negative-slope dispersion-compensating fiber to achieve both zero total chromatic dispersion and slope at the 1.55-/spl mu/m carrier. Fourth-order pulse dispersion caused by the fiber dispersion curvature around 1.55 /spl mu/m is then suppressed by adding the quadratic phase of opposite sign from excess SMF to produce 503-fs output. However, both higher quality and shorter 390-fs output is achieved after applying 6-GHz electrooptic phase modulation (3.5 /spl pi/ O-peak) to prestretched pulses and adding a further 50-m SMF to the link.Keywords
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