| Abstract: An optical set-reset (SR) latch is formed from a first electroabsorption
modulator (EAM), a second EAM and a waveguide photodetector (PD) which
are arranged in an optical and electrical feedback loop which controls
the transmission of light through the first EAM to latch the first EAM in
a light-transmissive state in response to a Set light input. A second
waveguide PD controls the transmission of light through the second EAM
and is used to switch the first EAM to a light-absorptive state in
response to a Reset light input provided to the second waveguide PD. The
optical SR latch, which may be formed on a III-V compound semiconductor
substrate (e.g. an InP or a GaAs substrate) as a photonic integrated
circuit (PIC), stores a bit of optical information and has an optical
output for the logic state of that bit of information. |
| Filed: 3/24/2011 |
| Application Number: 13/71095 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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