Fig. 4: Experimental results of the communication and optical computing.

a Schematic diagram from a single edge node to the cloud computing center. b The frequency comb with weight and signal loaded. c The curve of the bit error rate (BER) as a function of received optical power (ROP) is presented. The image received under the maximum power budget is depicted in Inset I. When the attenuation increases further, the incorrectly received image is shown in Inset xII. d The eye diagrams with different ROPs from -15 dBm to −19-dBm. e The accuracy curves of four basic operations as a function of baud rate. f The error distribution for addition operations at a baud rate of 10-GHz. g Ten convolution kernels and the images after convolution.