Harmonic Signal Generation and Frequency Up-Conversion Using a Hybrid Mode-Locked Multisection DFB Laser

Author

Lee, Kwang-Hyun ; Choi, Woo-Young ; Leem, Young Ahn ; Choi, Kwang-Seong ; Ko, Hyunsung ; Park, Kyung Hyun

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul

Volume

19

Issue

12

fYear

2007

fDate

6/15/2007 12:00:00 AM

Firstpage

901

Lastpage

903

Abstract

Harmonic signal generation and frequency up-conversion are demonstrated using a hybrid mode-locked multisection distributed-feedback (MS-DFB) laser. Hybrid mode-locking is realized by direct injection of electrical local oscillator (LO) signals into the laser gain control section. The harmonic signals are generated when multiple optical modes produced by the hybrid mode-locked MS-DFB laser are detected in a photodiode (PD). In addition, if data signals at f_IF are applied to the device along with LO signals at fLO, optical sidebands separated from the optical modes by f_IF are generated and harmonic up-converted signals are obtained by mode-beating in PD. Using this method, we demonstrate generation of the third-harmonic millimeter-waves at 30.79 GHz with f_LO at 10.263 GHz, and up-conversion of 12.5-Mb/s 32 quadrature amplitude modulation data at 300-MHz f_IF into 30-GHz band

Keywords

distributed feedback lasers; laser mode locking; laser modes; optical communication equipment; optical harmonic generation; quadrature amplitude modulation; semiconductor lasers; 10.263 GHz; 12.5 Mbit/s; 30.79 GHz; DFB laser; electrical local oscillator; frequency up-conversion; harmonic signal generation; hybrid mode-locking; mode beating; photodiode; quadrature amplitude modulation; Distributed power generation; Frequency; Gain control; Hybrid power systems; Laser mode locking; Local oscillators; Optical devices; Optical harmonic generation; Photodiodes; Signal generators; Harmonic signal generation; harmonic up- conversion; hybrid mode-locking (HML); mode-locked multisection distributed-feedback (MS-DFB) lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.897550

Filename

4212158