Phase Noise Characterization and EEPN of a Full C-Band Tunable Laser in Coherent Optical Systems

被引：2
|
作者：
Villafani, Diego [1 ]
Mirani, Ali [1 ]
Pang, Xiaodan [2 ]
Goobar, Edgard [3 ]
Schroder, Jochen [1 ]
Karlsson, Magnus [1 ]
Andrekson, Peter [1 ]
机构：
[1] Chalmers Univ Technol, Photon Lab, Fibre Opt Commun Res Ctr, Dept Microtechnol & Nanosci, S-41296 Gothenburg, Sweden
[2] Infinera Metro HW R&D, S-11743 Stockholm, Sweden
[3] Finisar Sweden AB, S-17543 Stockholm, Sweden
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2019年 / 31卷 / 24期
关键词：
FM-noise power spectral density; laser phase noise; equalization-enhanced phase noise; tunable laser source; coherent systems; PERFORMANCE; TRANSMISSION;
D O I：
10.1109/LPT.2019.2952816
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We perform phase noise characterization of a tunable laser source that is capable of tuning to 103 channels between 1527.6-1568.36 nm with 50 GHz grid spacing between the channels. The measured frequency modulation (FM) noise power spectral density (PSD) is reproduced by simulations in order to investigate the impact of equalization-enhanced phase noise (EEPN) in a coherent transmission system. The simulations are performed on a 30 Gbaud channel with 16 quadrature amplitude modulation (16QAM) and using pilot-based carrier phase estimation with 3% overhead. By performing extensive system simulations, we show the impact of different accumulated dispersion. Furthermore, we show the possibility to overcome EEPN related penalties by using a local oscillator (LO) with reduced low frequency phase noise or flat FM-noise PSD profiles with lower linewidths.
引用
收藏
页码：1991 / 1994
页数：4
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