Application of a digital non-linear compensation algorithm for evaluating the performance of root-raised-cosine pulses in 112 Gbits-1 DP-QPSK transmission

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Asif R, Usman M, Lin CY, Schmauß B
Zeitschrift: Journal of Optics
Verlag: Institute of Physics: Hybrid Open Access
Jahr der Veröffentlichung: 2012
Band: 14
Heftnummer: 9
Seitenbereich: 095402
ISSN: 2040-8978
Sprache: Englisch


Abstract


In this paper, we numerically investigate the non-linear tolerance of root-raised-cosine (RRC) pulse shaping by interpolating finite impulse response (FIR) filters in conjunction with digital backward propagation (DBP) in coherent 112 Gbit s−1 dual-polarization quadrature phase shift keying (DP-QPSK) transmission. The results depict that RRC pulses are more tolerant to intra-channel non-linearities, i.e. self-phase modulation (SPM), as compared to standard RZ-33 and NRZ pulses. The non-linear threshold point is improved by using RRC pulses by a factor of 2 dB signal input power as compared to RZ pulses and by 4 dB signal launch power as compared to NRZ pulses. The behavior of RRC pulses is also investigated with standard single mode fiber (SMF), non-zero dispersion shifted fiber (NZDSF) and next-generation large Aeff pure silica core fiber (LA-PSCF). Most importantly multi-span DBP is implemented and in the case of RRC pulses the computational efforts of the conventional DBP algorithm are reduced by 80% with a diminutive Q-penalty of 0.74 dB. The duty cycle of the RRC pulses is further optimized for efficient system performance. We have also compared the performance of single-channel transmission with the multi-channel transmission, where the performance is limited due to inter-channel non-linear effects. Furthermore, the non-linear tolerance of RRC pulses is investigated with; (a) different amplifier spacing and (b) variation in transmission link design information for the DBP algorithm.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Asif, Rameez
Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik
Lin, Chien-Yu
Lehrstuhl für Hochfrequenztechnik
Schmauß, Bernhard Prof. Dr.-Ing.
Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik


Zitierweisen

APA:
Asif, R., Usman, M., Lin, C.-Y., & Schmauß, B. (2012). Application of a digital non-linear compensation algorithm for evaluating the performance of root-raised-cosine pulses in 112 Gbits-1 DP-QPSK transmission. Journal of Optics, 14(9), 095402. https://dx.doi.org/10.1088/2040-8978/14/9/095402

MLA:
Asif, Rameez, et al. "Application of a digital non-linear compensation algorithm for evaluating the performance of root-raised-cosine pulses in 112 Gbits-1 DP-QPSK transmission." Journal of Optics 14.9 (2012): 095402.

BibTeX: 

Zuletzt aktualisiert 2019-07-02 um 13:08