Title :
Optical Equalization of 42.7-Gbaud Bandlimited RZ-DQPSK Signals
Author :
Gnauck, A.H. ; Doerr, C.R. ; Winzer, P.J. ; Kawanishi, T.
Author_Institution :
Alcatel-Lucent, Holmdel
Abstract :
We demonstrate the use of an optical equalizer to allow 42.7-Gbaud (85.4-Gb/s) return-to-zero differential quadrature phase-shift keyed signals to better tolerate the narrow optical filtering required in high-spectral-efficiency systems. The equalizer passbands are repetitive, enabling the equalization of multiple channels.
Keywords :
differential phase shift keying; equalisers; optical communication equipment; optical filters; 42.7 Gbaud bandlimited RZ-DQPSK signals; bit rate 85.4 Gbit/s; differential quadrature phase shift keyed signals; equalizer passbands; high spectral efficiency systems; multiple channels; narrow optical filtering; optical equalization; Fiber nonlinear optics; Filtering; Nonlinear optics; Optical feedback; Optical fiber filters; Optical filters; Optical modulation; Optical signal processing; Optical transmitters; Wavelength division multiplexing; Modulation; optical fiber communication;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.903548
