A regenerator for differential phase-shift keying data, consisting of two Mach–Zehnder interferometers and two amplitude regenerators, is examined theoretically. The result, which shows that the phase error is suppressed if phase-preserving amplitude regenerators are used, provides a theoretical description of an already experimentally implemented regenerator.
© 2006 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: January 13, 2006
Manuscript Accepted: February 9, 2006
Pontus Johannisson, Göran Adolfsson, and Magnus Karlsson, "Suppression of phase error in differential phase-shift keying data by amplitude regeneration," Opt. Lett. 31, 1385-1387 (2006)