Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume -, Issue -, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.2c06232
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Next-generation communication networks require > Tbit/s single-channel data transfer and processing with sub-picosecond switches and routers at network nodes. Materials enabling ultrafast all-optical switching have high potential to solve the speed limitations of current optoelectronic circuits. We report femtosecond transient grating experiments demonstrating the feasibility of < 200 fs all-optical switching using hydrated thin films of photoactive yellow protein and bacteriorhodopsin, and discuss the possibilities for practical utilization in extremely high-speed optical modulation and switching/routing with nominally infinite extinction contrast.
Next-generation communication networks require > Tbit/s single-channel data transfer and processing with sub-picosecond switches and routers at network nodes. Materials enabling ultrafast all-optical switching have high potential to solve the speed limitations of current optoelectronic circuits. Chromo-proteins exhibit a large light-controlled refractive index change alleviating the driving energy requirements for optical switching. Here, we report femtosecond transient grating experiments demonstrating the feasibility of < 200 fs all-optical switching by hydrated thin films of photoactive yellow protein and compare the results with those obtained using bacteriorhodopsin. Possibilities for the practical utilization of the scheme in extremely high-speed optical modulation and switching/routing with nominally infinite extinction contrast are discussed.
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