Monolithically integrated multi-wavelength VCSEL arrays using high-contrast gratings.
We propose a novel design for multi-wavelength arrays of vertical cavity surface-emitting lasers (VCSELs) using high-contrast gratings (HCGs) as top mirrors. A range of VCSEL cavity wavelengths in excess of 100 nm is predicted by modifying only the period and duty-cycle of the high-contrast gratings, while leaving the epitaxial layer thickness unchanged. VCSEL arrays fabricated with this novel design can easily accommodate the entire Er-doped fiber amplifier bandwidth with emission wavelengths defined solely by lithography with no restrictions in physical layout. Further, the entire process is identical to that of solitary VCSELs, facilitating cost-effective manufacturing.
Karagodsky
Vadim
V
Department of Electrical Engineering and Computer Science, University of California at Berkeley, Cory Hall, Berkeley, CA 94720, USA.
Pesala
Bala
B
Chase
Christopher
C
Hofmann
Werner
W
Koyama
Fumio
F
Chang-Hasnain
Connie J
CJ
D004867:Equipment Design; D019544:Equipment Failure Analysis; D054023:Lasers, Semiconductor; D012031:Refractometry / Q000295:instrumentation*; D018511:Systems Integration