Title :
Tunable dual-wavelength picosecond pulse generation by the use of two Fabry-Pe/spl acute/rot laser diodes in an external injection seeding scheme
Author :
Zhang, M. ; Wang, D.N. ; Li, H. ; Jin, W. ; Demokan, M.S.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., China
Abstract :
An attractive alternative to generate tunable dual wavelength pulses by external injection seeding of a gain-switched Fabry-Pe/spl acute/rot laser diode (FP-LD) is demonstrated. The external injection-seeding branch consists of only a FP-LD, a 3-dB coupler and two fiber Bragg gratings (FBGs). The two wavelengths can be selected and their spacing can be tuned by adjusting two FBGs. The output sidemode-suppression- ratio is better than 17 dB over a 10 nm wavelength tuning range. The whole system is simple and of low cost.
Keywords :
Bragg gratings; Fabry-Perot resonators; optical fibre couplers; optical pulse generation; optical tuning; FP-LD; Fabry-Pe/spl acute/rot laser diodes; coupler; external injection seeding scheme; external injection-seeding branch; fiber Bragg gratings; gain switching; gain-switched Fabry-Pe/spl acute/rot laser diode; output sidemode-suppression ratio; tunable dual-wavelength picosecond pulse generation; tunable dual-wavelength pulses; wavelength selection; wavelength spacing; wavelength tuning range; Diode lasers; Erbium-doped fiber lasers; Fabry-Perot; Laser mode locking; Laser tuning; Optical fiber polarization; Optical pulse generation; Optical pulses; Pulse generation; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
