High-Speed Optical Logic Using GaAs
The status of bulk-GaAs etalons and their application to high-speed optical logic are summarized. A bulk-GaAs nonlinear etalon can make a decision in ≅1 ps and recover to make another in <100 ps, making possible high-speed optical logic. Several characteristics are of particular importance: time to make a logic decision (“switch-on time”), time required for the device to recover and be ready to make the next decision (recovery time), energy required per logic decision (switching energy), ability to switch the next device (cascadability) or perhaps several devices (fanout), etc.
KeywordsRecombination GaAs Coupler Zucker
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