Figure | Working principle of the asynchronous optical recurrent architecture (IMAGE)
Caption
Working principle of the asynchronous optical recurrent architecture. a. System diagrams of the optical asynchronous processor. The computing process is unfolded cycle by cycle in the wavelength domain, with the OCC operating in a wavelength-multiplexed mode. ADCs and DACs operate in a quasi-static mode, generating or sampling a single electrical level asynchronously at t1…s and τ1…s. WRU, wavelength relay unit. OCC, optical computing core. b. Information relay based on optical-electrical-optical conversion. The asynchronous input wavelength λn-1 is differentially detected by photodetectors, which subsequently drive the MRM with the supply light of λn. The output signal stabilizes only after all signals from preceding cycles have arrived. c. Transfer function of the WRU, showing selectable linear and nonlinear working regions to accommodate specific requirements. d. The DNA analysis result with fabricated OHMM chip. The structural similarity across a region of 600 base pairs (bp) indicates the primary origin of wild-type mitochondrial DNA replication. e, Speech recognition result with fabricated ORNN chip. Eight-classification accuracy reaches 87.7% using one-versus-rest strategy.
Credit
Wu, B., Zhou, H., Cheng, J. et al.
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CC BY