Title :
Dynamic range of vertical-cavity surface-emitting lasers in multimode links
Author :
Lee, H.L.T. ; Dalal, R.V. ; Ram, R.J. ; Choquette, K.D.
Author_Institution :
Res. Lab. of Electron., MIT, Cambridge, MA, USA
Abstract :
We report spurious-free dynamic-range measurements of 850-nm vertical-cavity surface-emitting lasers in short multimode links for radio frequency communication. For a 27 m fiber link, the dynamic range at optimal bias was greater than 95 dBHz/sup 2/3/ for modulation frequencies between 1 and 5.5 GHz, which exceeds the requirements for antenna remoting in microcellular networks. In a free-space link, we have measured the highest dynamic range in an 850-nm vertical-cavity surface-emitting laser of 113 dB Hz/sup 1/3/ at 900 MHz. We have also investigated the effects of modal noise and differential mode delay on the dynamic range for longer lengths of fiber.
Keywords :
laser cavity resonators; microcellular radio; optical fibre communication; optical noise; semiconductor lasers; surface emitting lasers; 27 m; 850 nm; antenna remoting; differential mode delay; dynamic range; fiber link; microcellular networks; modal noise; modulation frequencies; multimode links; optimal bias; radio frequency communication; short multimode links; spurious-free dynamic-range measurements; vertical-cavity surface-emitting lasers; Antenna measurements; Dynamic range; Fiber lasers; Frequency measurement; Frequency modulation; Laser modes; Optical fiber communication; Radio frequency; Surface emitting lasers; Vertical cavity surface emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
