Title :
Lateral loss effects on modulation bandwidth in VCSELs
Author :
Chui, P.C. ; Yu, S.F.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., Hong Kong
Abstract :
Intensity noise and chromatic fiber dispersion in analog optical communication systems are attributed to harmonic and inter-modulation distortion in the amplitude modulation (AM) of semiconductor lasers. In addition, maximum usable bandwidth of the communication systems is limited by harmonic distortion. Due to the use of Fabry Perot type resonator, second harmonic distortion (SHD) exists in both edge-emitting devices and VCSELs. But the distortion caused by lateral loss may be more so in VCSELs because of its smaller core size. Two factors: the lateral field confinement factor and the lateral loss a due to diffraction, are considered for their effect on harmonic distortion when the laser device is under small signal modulation.
Keywords :
Fabry-Perot resonators; harmonic distortion; laser cavity resonators; optical fibre communication; optical fibre dispersion; optical losses; optical transmitters; semiconductor lasers; surface emitting lasers; Fabry Perot type resonator; VCSELs; analog optical communication systems; chromatic fiber dispersion; communication systems; core size; diffraction; harmonic distortion; intensity noise; inter-modulation distortion; laser device; lateral field confinement factor; lateral loss; lateral loss effects; maximum usable bandwidth; modulation bandwidth; small signal modulation; Bandwidth; Chromatic dispersion; Harmonic distortion; Laser noise; Noise level; Optical fiber communication; Optical losses; Optical noise; Semiconductor device noise; Vertical cavity surface emitting lasers;
Conference_Titel :
Nanostructures and Quantum Dots/WDM Components/VCSELs and Microcavaties/RF Photonics for CATV and HFC Systems, 1999 Digest of the LEOS Summer Topical Meetings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-5633-0
DOI :
10.1109/LEOSST.1999.794713
