Spectrally Efficient Enhanced-Performance Bidirectional Coherent PON With Laserless 10 Gb/s ONU

被引：4

作者：

Shahpari, A. ^{[1
,2
]}

Luis, R. S. ^{[3
]}

Ribeiro, V. ^{[1
,2
]}

Reis, J. D. ^{[4
]}

Ferreira, R. ^{[1
,2
]}

Mendinueta, J. M. D. ^{[3
]}

Vujicic, Z. ^{[1
,2
]}

Puttnam, B. J. ^{[3
]}

Lima, M. ^{[1
,2
]}

Wada, N. ^{[3
]}

Teixeira, A. ^{[1
,2
]}

机构：

[1] Univ Aveiro, Dept Elect Telecommun & Informat, Aveiro, Portugal

[2] Inst Telecomun, Aveiro, Portugal

[3] Natl Inst Informat & Commun Technol, Photon Network Syst Lab, Tokyo, Japan

[4] Div Opt Technol, CPqD, Campinas, SP, Brazil

来源：

JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING | 2015年 / 7卷 / 03期

关键词：

Nyquist-pulse shaping; Passive optical networks (PON); Self-homodyne detection; Stimulated Raman scattering; UDWDM-PON; ACCESS NETWORKS; TECHNOLOGY; CROSSTALK; UPSTREAM; SYSTEMS; POWER; BAND;

D O I：

10.1364/JOCN.7.00A403

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

We present and experimentally characterize a spectrally efficient, bidirectional, ultradense wavelength-division multiplexing passive optical network (PON) (2 x 120 Gb/s at 50 GHz) over 30 km standard single-mode fiber. This is achieved using a 4 GHz grid with partial spectrum overlapping, Nyquist-shaped 16-ary quadrature amplitude modulation, and digital frequency shifting. This scheme is based on a laserless, self-homodyne PON with centralized wavelength control. We achieve reduced impact of the Rayleigh back-scattering effect due to Nyquist-pulse shaping and frequency upshifting. Self-homodyne detection relaxes the laser linewidth requirement and digital signal processing complexity at the optical network unit. To demonstrate the extra benefit of the proposed PON system, we also experimentally and theoretically evaluate the impact of nonlinear Raman crosstalk in video overlay. Compared to a baseband Nyquist signal and baud rate non-return-to-zero equivalent, the proposed system improves the carrier-to-Raman crosstalk ratio of video overlay by 4 and 6 dB, respectively.

引用

页码：A403 / A413

页数：11

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