Title :
Chromatic dispersion limitations for FSK and DPSK systems with direct detection receivers
Author :
Elrefaie, A.F. ; Wagner, R.E.
Author_Institution :
Bellcore, Red Bank, NJ, USA
Abstract :
Chromatic dispersion limitations for frequency-shift keying (FSK) and differential phase-shift keying (DPSK) systems using narrow-linewidth lasers and direct-detection receivers are discussed. The limitations are found to depend strongly on the receiver configuration. The receiver must include an optical frequency discriminator, such as a Mach-Zehnder interferometer, and either a balanced photodetector pair or a single photodetector at the interferometer output. For transmission at 1550 nm over 1310-nm optimized single-mode fiber, the distance for 1-dB eye closure penalty at 10 Gb/s ranges from 20 to 70 km, depending on the modulation format and the receiver configuration.<>
Keywords :
frequency shift keying; optical dispersion; optical links; phase shift keying; receivers; 10 Gbit/s; 1310 nm; 1550 nm; 20 to 70 km; DPSK systems; FSK; Mach-Zehnder interferometer; balanced photodetector pair; chromatic dispersion limitations; differential phase-shift keying; direct detection receivers; direct-detection receivers; eye closure penalty; frequency-shift keying; modulation format; narrow-linewidth lasers; optical frequency discriminator; receiver configuration; single photodetector; Chromatic dispersion; Differential quadrature phase shift keying; Frequency shift keying; High speed optical techniques; Optical feedback; Optical filters; Optical interferometry; Optical mixing; Optical modulation; Optical receivers;
Journal_Title :
Photonics Technology Letters, IEEE
