We evaluate the advantage of using space–time coding in order to increase the tolerance of fiber-optic communications systems to polarization-dependent loss (PDL). Focusing on three particular codes, the Golden Code, the Silver Code (SC), and the Alamouti Code (AC), we calculate the amount of average PDL that can be tolerated for a given signal-to-noise ratio margin that is designed into the system. The SC is shown to be optimal in the case of low to moderate PDL, whereas, in the case of extreme PDL, the AC shows the best performance.
© 2010 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: July 28, 2010
Manuscript Accepted: September 8, 2010
Published: October 19, 2010
Eado Meron, Alon Andrusier, Meir Feder, and Mark Shtaif, "Use of space-time coding in coherent polarization-multiplexed systems suffering from polarization-dependent loss," Opt. Lett. 35, 3547-3549 (2010)