Optical Logarithm

Research | Optical Logarithm

Optical computing accelerators help alleviate bandwidth and power consumption bottlenecks in electronics. We show an approach to implementing logarithmic-type analog co-processors in silicon photonics and use it to perform the exponentiation operation and the recovery of a signal in the presence of multiplicative distortion. The function is realized by exploiting nonlinear-absorption-enhanced Raman amplification saturation in a silicon waveguide.

[1] Yunshan Jiang, Peter TS DeVore, and Bahram Jalali, “Analog optical computing primitives in silicon photonics.” Optics letters (2016). link pdf

[2] Yunshan Jiang, Peter TS DeVore, and Bahram Jalali, “Signal De-convolution with analog logarithmic computing primitives in silicon photonics.” Photonics Society Summer Topical Meeting Series (SUM), IEEE, 2016.link pdf 

[3] Yunshan Jiang, Peter T. Devore, Ata Mahjoubfar, and Bahram Jalali, “Analog logarithmic computing primitives with silicon photonics.” CLEO: Applications and Technology. Optical Society of America, 2016. link pdf