Bandwidth10 was founded in February 2011 to market its tunable, singlemode, 1550 nm long-wavelength VCSELs and transceivers for datacom applications.
Bandwidth10’s innovative High-Contrast Grating (HCG) VCSEL technology was developed by the founders while at the University of California, Berkeley. Working with Prof. Chang-Hasnain, Dr. Chase, Dr. Rao and Dr. Huang completed their Ph.D. thesis research on VCSELs with a completely new concept for a top mirror, a High-Contrast Grating (HCG). The HCG (seen below) is a single layer, ultra-thin grating made of a high index material with a sub-wavelength period, which exhibits a much broader reflection band than conventional Distributed Bragg Reflectors (DBR).
Using the HCG as a tunable mirror, as shown below, leads to a wafer-scale, low cost fabrication process for BW10’s long-wavelength 1550-nm, singlemode VCSEL transceivers.
Dr. Fred Leonberger
Prof. James S. Harris
Prof. Fumio Koyama
Prof. Alan Willer