Wide-field-of-view optical detectors using fused fiber-optic tapers

Photodetectors used in wireless applications suffer from a trade-off between their response speeds and active areas, which limits the received signal-to-noise ratio (SNR). Conventional light-focusing elements to improve SNR narrow field of view (FOV). Herein, we demonstrate versatile imaging element featuring wide FOV high optical gain using fused fiber-optic tapers. To verify practicality proposed design, demonstrated tested wide-FOV detector for communication that can be wavelengths ranging visible-light band near infrared. The offers improvements over luminescent detectors, including higher efficiency, broader modulation bandwidth, indefinite stability.