Title :
Generation of microwave signals by active mode locking in a gain bandwidth restricted laser structure
Author :
Bordonalli, A.C. ; Cai, B. ; Seeds, A.J. ; Williams, P.J.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
A simple method of generating microwave signals by using an active DFB InP-InGaAsP laser structure integrated with a passive extended cavity is presented. High spectral purity (<-94 dBc/Hz, 10 kHz offset) is achieved by locking the laser mode spacing to harmonics of an electrical drive signal applied to the laser bias current.
Keywords :
III-V semiconductors; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; integrated optics; laser cavity resonators; laser mode locking; microwave generation; semiconductor lasers; InP-InGaAsP; active DFB InP-InGaAsP laser structure; active mode locking; electrical drive signal; gain bandwidth restricted laser structure; harmonics; high spectral purity; laser bias current; laser mode spacing; microwave signal generation; passive extended cavity; Bandwidth; Frequency; Laser mode locking; Laser noise; Laser theory; Masers; Microwave generation; Optical modulation; Power lasers; Signal generators;
Journal_Title :
Photonics Technology Letters, IEEE
