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2.4-Gbit/s, 306-km repeaterless transmission by using a directly modulated DFB-LD and dispersion-compensating fiber

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Abstract

Recently, 1.55-μm repeaterless transmission systems using non-dispersion-shifted fiber (NDSF) have been intensely researched.1,2 In such systems, a large chromatic dispersion at the 1.55-μm wavelength may degrade the transmission characteristics when combined with laser chirp or self-phase modulation (SPM). Whereas external modulation is one solution for overcoming this difficulty,1,2 the use of dispersion-compensating fibers3 (DCFs) in the direct-modulation scheme is also a strong candidate because of its simplicity.4

© 1995 Optical Society of America

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