Title :
Small-signal frequency response of long-wavelength vertical-cavity lasers
Author :
Black, K.A. ; Bjorlin, E.S. ; Piprek, J. ; Hu, E.L. ; Bowers, J.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
The small-signal frequency response of long-wavelength vertical-cavity lasers (LW-VCLs) is of interest in determining the ultimate bandwidth of these devices for use in terrestrial networks. This letter analyses two distinct device structures of double wafer-bonded vertical-cavity lasers operating at 1.5 μm and compares their high-speed performance. We demonstrate the highest modulation bandwidth and the highest modulation current efficiency of an electrically pumped LW-VCL of 7 and 4.1 GHz//spl radic/mA, respectively.
Keywords :
electro-optical modulation; frequency response; laser cavity resonators; optical transmitters; semiconductor lasers; 1.5 mum; double wafer-bonded vertical-cavity lasers; electrically pumped; high-speed performance; long-wavelength vertical-cavity lasers; modulation bandwidth; modulation current efficiency; small-signal frequency response; terrestrial networks; Bandwidth; Damping; Frequency response; Pump lasers; Resonance; Resonant frequency; Semiconductor lasers; Surface emitting lasers; Vertical cavity surface emitting lasers; Wafer bonding;
Journal_Title :
Photonics Technology Letters, IEEE
