Chirp-Compensated DBR Lasers for TWDM-PON Applications

Author

Hang Zhao ; Sheng Hu ; Jialin Zhao ; Yao Zhu ; Yonglin Yu ; Barry, Liam P.

Author_Institution

Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

7

Issue

1

fYear

2015

fDate

Feb. 2015

Firstpage

1

Lastpage

9

Abstract

We propose a novel chirp compensation scheme for directly modulated three-section distributed Bragg reflector (3s-DBR) lasers in applications of the time- and wavelength-division multiplexed passive optical network systems. The frequency chirp of 3s-DBR lasers induced by direct modulation is investigated through extensive numerical simulations based on the time-domain travel-wave model. To overcome the signal distortions resulting from the frequency chirp due to direct modulation, we extend on our novel idea of frequency chirp compensation technology with inherent characteristics of DBR-type tunable lasers. Q factors and extinction ratio for different system transmission lengths are analyzed and compared. Large dispersion tolerance of the system is achieved by using the chirp compensation scheme.

Keywords

Q-factor; compensation; distributed Bragg reflector lasers; laser tuning; optical modulation; passive optical networks; time division multiplexing; wavelength division multiplexing; DBR-type tunable lasers; Q factors; TWDM-PON applications; chirp-compensated DBR lasers; directly modulated three-section distributed Bragg reflector lasers; dispersion tolerance; extinction ratio; frequency chirp; signal distortions; time-division multiplexed passive optical network systems; time-domain travel-wave model; transmission lengths; wavelength-division multiplexed passive optical network systems; Chirp; Erbium; Frequency modulation; Laser noise; Laser tuning; Optical fiber dispersion; TWDM-PON; Three section DBR laser; Three-section DBR laser; chirp compensation; long reach;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2015.2392377

Filename

7029017