Title :
Modulation response of VCSEL with lateral loss effects
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 a 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 Γ, and the lateral loss α due to diffraction, are considered for their effect on harmonic distortion when the laser device is under small signal modulation
Keywords :
Fabry-Perot resonators; amplitude modulation; harmonic distortion; semiconductor lasers; surface emitting lasers; Fabry Perot resonator; VCSEL; amplitude modulation; analog optical communication; bandwidth; chromatic fiber dispersion; core size; edge-emitting devices; intensity noise; lateral field confinement factor; lateral loss; modulation response; second harmonic distortion; semiconductor lasers; small signal modulation; Chromatic dispersion; Harmonic distortion; Laser noise; Noise level; Optical distortion; Optical fiber communication; Optical losses; Optical noise; Semiconductor device noise; Vertical cavity surface emitting lasers;
Conference_Titel :
Electron Devices Meeting, 1999. Proceedings. 1999 IEEE Hong Kong
Conference_Location :
Shatin
Print_ISBN :
0-7803-5648-9
DOI :
10.1109/HKEDM.1999.836402
