Building large crossbar switches for low-latency, highbandwidth interprocessor interconnects in multiprocessor systems is a difficult task because of the many practical limitations of digital electronics. This paper presents a first order design for a crossbar switch which utilizes wavelength tunable vertical-cavity surface-emitting laser (VCSEL) technology and free space optics. Free space opt...

Injection locking has been actively researched for its possibility to improve laser performance for both digital and analog applications. When a modulated follower laser (also termed “slave” laser) is locked to the master laser, its nonlinear distortion and frequency chirp may be reduced. As well, the resonance frequency can increase to several times higher than its free running case. In this p...

Abstract The rapid development of artificial intelligence has stimulated the interest in novel designs photonic neural networks. As three-dimensional (3D) networks, diffractive networks (DNNs) relying on phenomena light, demonstrated their superb performance direct parallel processing two-dimensional (2D) optical data at speed light. Despite outstanding achievements, DNNs utilize centimeter-sca...

Introduction: Protein-protein interaction is one of the most important subjects in molecular biology [1]. Bioassays have been developed to detect and quantify the biomolecular interactions with high sensitivity. There are two general categories of techniques: labelling with compounds and direct molecule identification. Label-free biosensor technologies are among the latter, which are desirable ...

Optically pumped magnetometers (OPMs) have developed rapidly in the bio-magnetic measurement field, which requires lasers with stable frequency and intensity for high sensitivity. Herein we stabilize a vertical-cavity surface-emitting laser (VCSEL) without any additional setup except parts of an OPM. The linewidth absorption spectrum as reference is broadened to 40 GHz owing pressure broadening...

In this study, we have theoretically investigated the effect of electron stopper layer on internal temperature distribution of high performance vertical cavity surface-emitting laser emitting at 1305 nm. Simulation software PICS3D, which self-consistently combines the 3D simulation of carrier transport, self-heating, gain computation and wave-guiding, was used. Simulation results show that chan...

The Vertical Cavity Surface-Emitting Laser (VCSEL) has led to the rapid development of advanced fields such as communication, optical sensing, smart cars, and more. accurate testing VCSEL beam quality is an important prerequisite for its effective application. In this paper, a method measuring divergence angle far field spot based on transmissive Fourier ptychography proposed. First, single CCD...

Abstract We propose and demonstrate a novel surface-grating vertical cavity surface emitting laser (VCSEL)-integrated amplifier/beam scanner. When the of VCSEL section is periodically etched, single slow-light mode which travels laterally into amplifier selected due to wavelength selectivity grating. The coupled slow light can be amplified with pumping above threshold. far field angle continuou...

Dielectric layers are often employed as etch masks for mesa and trench structures during vertical-cavity surface-emitting laser VCSEL fabrication. The removal of these mask layers by reactive ion etching results in unavoidable exposure of the top laser facet to sputtering. This sputtering is experimentally shown to impact the device performance. After a thickness of less than a quarter waveleng...