Electronic–photonic computing systems offer immense potential in energy-efficient artificial intelligence (AI) acceleration tasks due to the superior speed and efficiency of optics, especially for real-time, low-energy deep neural network inference on resource-restricted edge platforms. However, current optical accelerators based foundry-available devices conventional system architecture still encounter a performance gap compared highly customized electronic counterparts. To bridge lack...

Abstract Respiration induced motion is a well-recognized challenge in many clinical practices including upper body imaging, lung tumor tracking and radiation therapy. In this work, we present recurrent neural network algorithm that was implemented photonic delay-line reservoir computer (RC) for real-time respiratory prediction. The signals are quasi-periodic waveforms subject to variety of non-linear distortions. demonstrated the first time RC can be effective predicting short medium range...

In this work, we report two slow-light enhanced silicon optical modulators with electro-optic (EO) phase shifter lengths of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$500~\mu \text{m}$ </tex-math></inline-formula> and notation="LaTeX">$150~\mu that were fabricated using the AIM Photonics foundry. Tunable power splitters give a threefold increase in extinction ratio (ER). An eye diagram operating at 10...

Abstract Reservoir computing (RC) is one kind of neuromorphic mainly applied to process sequential data such as time-dependent signals. In this paper, the bifurcation diagram a photonic time-delay RC system thoroughly studied, and method dynamics guided hardware hyperparameter optimization presented. The time-evolution equation expressed by parameters established while intrinsic quantitively studied. Bifurcation based offers simple yet effective approach in setting that aims reduce...

Single-line-defect (W1) photonic crystal waveguides hold significant promise for various applications in integrated photonics due to their ability induce slow light across wide band ranges. Ensuring the manufacturing reliability of these devices is paramount practical implementation, as they tend be highly sensitive fabrication deviations. In this study, we investigated fabricated at Albany Nanotech Complex foundry by comparing consistency band-edge locations and group indices 14 chips. We...

An integrated RF-photonic link that consists of a slow-light enhanced silicon (Si) electro-optic modulator, single mode Si optical waveguide and silicon-germanium (SiGe) photodetector was fabricated using photonic standard foundry service. The third-order intermodulation distortion (IMD3) the RF signals spur-free dynamic range (SFDR) were characterized through two-tone test method. Mach-Zehnder modulator architecture is designed to have unequal arms operate on simplified driving scheme. As...

This article presents the experimental demonstration of a true-time delay line optical reservoir computer (ORC) using an incoherent light chaos oscillator. In contrast to other benchtop ORC systems, no external fiber spool was employed, enabling characteristic 28.4 ns, one fastest reported reservoirs date. Comparable error metrics were obtained for standard benchmark tasks despite reduced time scale. Practical techniques, namely preamble functions and fading memory capacity measures, are...

Si photonic foundry fabricated cascaded and continuous spiral shaped silicon nitride (SiN) waveguides that incorporate Bragg grating structures were explored to produce an on-chip true-time delay line. A time-domain measurement method was used characterize the time of near their band edge where it exhibits strongest slow light effect. The highest group index extracted from SiN is 19.7 corresponding a total 5.48 ns in full length 12.49 cm consumes surface area 2.66 mm <sup...

This work presents a scaling pathway of on-chip analog photonic computing using foundry-fabricated silicon electro-optic (EO) slow-light Mach-Zehnder modulators (SL-MZMs) and compact Ge photodetectors (PDs) to construct unit. Two SL-MZMs with phase shifter (PS) lengths 500 μm 150 are studied in this work. The bit resolution, nonlinearity, clock frequency, power consumption the link, including an RF amplifier, SL-MZM, PD, thoroughly investigated. link SL-MZM has demonstrated low normalized...

In this research, we developed a low-power silicon photonics foundry-fabricated slow-light thermal phase shifter (SLTPS) where the (SL) effect is achieved using an integrated Bragg grating (BG) waveguide. Heating induces red shift in transmission spectrum, leading to increased group index ng during operation, which facilitates further reduction voltage needed for π shift, i.e., Vπ. Additionally, investigated compact Mach–Zehnder Interferometer (MZI) that incorporates SLTPS both arms with...

We demonstrated 6-bit DAC resolution on a 1D photonic crystal based optical modulator operated at band edge 250kH clock frequency and achieved NMSE ~0 . 025, enabling weight static tensor computing for edge-AI applications.

Interleaved doped Mach-Zehnder Modulators (MZMs) are one solution to attaining higher modulation efficiencies compared with lateral junction structures, due greater modal overlap the depletion regions of PN junctions. In this work, we present an interleaved Si modulator device design and process simulation based on a three-step ion implantation that aims obtain realistic doping profile using Monte Carlo method. A high concentration order 5×10 <sup...

An optical reservoir computer (ORC) is used to predict the motion of lung tumors during radiation therapy procedures. The ORC shows comparable accuracy traditional neural networks with vastly increased computation speed and training time.

Abstract The application of reservoir computing (RC) is for the first time studied in a class forecasting tasks which signals are under random physical perturbations, meaning that data-baring waveform distortions versatile, and process not repeatable. Tumor movement caused by respiratory motion such problem real-time prediction tumor required clinical radiotherapy. In this work, true-time delay (TTD) respiration monitor based on photonic RC with adjustable nodes connection developed...