Chirped RZ-DPSK based on single Mach-Zehnder modulator and its nonlinear transmission performance

Author

Liu, Xiang ; Kao, Y.-H.

Author_Institution

Bell Labs., Lucent Technol., Holmdel, NJ, USA

Volume

17

Issue

7

fYear

2005

fDate

7/1/2005 12:00:00 AM

Firstpage

1531

Lastpage

1533

Abstract

We present a detailed analysis of positively and negatively chirped return-to-zero differential phase-shift keyed (CRZ-DPSK) signals that are generated using a single Mach-Zehnder modulator at the transmitter. Supporting CRZ-DPSK experiments at 10 Gb/s showed a nominal receiver sensitivity of -42 dBm at bit-error rate =10^-9. We show that an appropriate amount of chirp, depending on the dispersion map used, enhances the nonlinear tolerance of the CRZ-DPSK signal by reducing the Gordon-Mollenauer phase noise.

Keywords

Mach-Zehnder interferometers; chirp modulation; differential phase shift keying; error statistics; nonlinear optics; optical fibre communication; optical fibre dispersion; optical modulation; optical noise; optical receivers; optical transmitters; phase noise; 10 Gbit/s; Gordon-Mollenauer phase noise reduction; Mach-Zehnder modulator; bit-error rate; chirped RZ-DPSK; dispersion map; nonlinear tolerance; receiver sensitivity; return-to-zero differential phase-shift keying; transmitter; Chirp modulation; Differential phase shift keying; Differential quadrature phase shift keying; Nonlinear optics; Optical modulation; Optical transmitters; Phase modulation; Signal analysis; Signal generators; Voltage; Chirped return-to-zero differential phase-shift keying (CRZ-DPSK); modulation format; nonlinear transmission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.848550

Filename

1453667