Synthesis of pure white color and its equal power, equal chromatic splitting through a novel 3??3 fiber optic visible multiplexer

Abstract

We report generation of pure-white color by mixing red, green, blue (RGB) lights from LEDs through a novel 3??3 fiber optics color synthesizer (FOCS), which is made of hard plastic cladding fiber (HPCF). The three output ports provided an equal power for the synthesized white color with almost identical CIE color coordinates. The FOCS rendered tunable white color temperature and optical properties of the outputs were experimentally investigated in terms of uniformity in power, photometric luminance, and color coordinate. We further packaged the device and applied to small form factor back light unit (BLU) to show feasibility in illumination uniformity enhancement.

Acousto-optic control of speckle contrast in multimode fibers with a cylindrical piezoelectric transducer oscillating in the radial direction

“…Coherent light delivery over MMFs has continuously gained attention and interest for many imaging applications such as direct image delivery [2], analog video signal transmission [5], and fiber-based color synthesis [6,7], and has been accompanied by a demand for efficient and fast control of the speckle contrast. The acousto-optic modulation technique based on a piezoelectric transducer (PZT) could provide a common solution platform for MMF laser delivery applications.…”