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  • CLEO/Europe and IQEC 2007 Conference Digest
  • (Optica Publishing Group, 2007),
  • paper CI3_3

Impact of the Electro-Optical Modulator on CAPS Code Dispersion Tolerance

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Abstract

Recently, great interest has been shown towards 10-Gb/s transmission over 150–200km standard single-mode fiber (SSMF) without optical dispersion-compensating fiber (DCF), exploting transmission formats which show mitigated dispersion-related intersymbol interference (ISI), such as Phased Shaped Binary Transmissions (PSBT), the Chirp-Managed Laser (CML), and the Combined Amplitude-Phase Shift (CAPS) codes. CAPS has been theoretically demonstrated to have a pulse shape with best simultaneous time and frequency concentration, resulting in optimized dispersion tolerance [1]. Moreover a first order CAPS (1-CAPS) transmitter can be implemented by following a Differential Phase Shift Keying (DPSK) transmitter with a narrow optical filter, having Full Width Half Maximum (FWHM) of about 2/3 the bit rate (e.g. 6.67 GHz for 10-Gb/s bit rate)[2].

© 2007 IEEE

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