Title :
Multilevel Amplitude Modulation Using A Composite-Resonator Vertical-Cavity Laser
Author :
Chen, Chen ; Choquette, Kent D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA
Abstract :
Modulation characteristics of a composite-resonator vertical-cavity laser (CRVCL) can be engineered by modulating the carrier and photon densities in the two optically coupled cavities simultaneously. The total modulation response is a superposition of the individual modulation response from each cavity, when direct modulation is applied to both cavities. This property enables the CRVCL to produce multilevel signaling for optical communication. A demonstration of four-level amplitude modulation at 2.5 Gb/s is shown.
Keywords :
amplitude modulation; distributed Bragg reflector lasers; laser cavity resonators; optical modulation; optical transmitters; quantum well lasers; surface emitting lasers; CRVCL; bit rate 2.5 Gbit/s; carrier density; composite-resonator vertical-cavity laser; multilevel amplitude modulation; optical communication; photon densities; two-optically coupled cavity; Semiconductor lasers; vertical-cavity surface-emitting lasers (VCSELs);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2022058
