Abstract: A system for disabling or destroying an unmanned aerial vehicle (UAV) is provided. The system comprises an anti-UAV system and an anti-UAV computing platform. The anti-UAV system comprises: a plurality of laser devices configured to generate a plurality of laser beams at a plurality of different wavelengths; a coarse wavelength division multiplexing (CWDM) combiner configured to combine the plurality of laser beams from the plurality of laser devices into a combined laser beam; and a tracking device configured to detect a UAV. The anti-UAV computing platform is configured to: detect, using the tracking device, an object within range of the tracking device; and based on detecting the object, direct, using the anti-UAV system, the combined laser beam from the CWDM combiner onto the detected object.

Abstract: A photonic antenna array includes: a plurality of tapered fiber ends; and a support plate. Each tapered fiber end of the plurality of tapered fiber ends corresponds to a respective fiber of a plurality of fibers. A portion of each of the plurality of fibers is run through the support plate. A fiber core diameter at a tapered end point of a respective tapered fiber end of the plurality of tapered fiber ends has a first diameter. A fiber core diameter at a non-tapered portion of the respective fiber corresponding to the respective tapered fiber end has a second diameter. The first diameter is smaller than the second diameter. The respective tapered fiber end is configured to provide a mode field diameter larger than a diameter of the non-tapered portion of the respective fiber corresponding to the respective tapered fiber end.

Abstract: A fiber optic assembly includes: a gain fiber configured to output signal light; a first taper configured to expand the signal light output by the gain fiber; and a reversing prism configured to receive counter-pumping light and output the counter-pumping light into the first taper. The first taper is further configured to direct the counter-pumping light towards the gain fiber.

Abstract: Exemplary embodiments of the disclosure include a fiber optic amplifier system and a fiber optic oscillator system having a first stage, comprising a first core fiber having a first core diameter and a first cladding size; a second stage, comprising a second core fiber having a second core diameter and a second cladding size; and a double mode adapter connecting the first stage to the second stage, wherein the double mode adapter is configured to provide transitions for the cores and the claddings of the first and second core fibers.

Abstract: An exemplary embodiment of the disclosure provides a double fiber optic mode adapter including: a fiber core having a variable core diameter; a fiber cladding having a variable cladding size; a first input interface corresponding to a first core diameter and a first cladding size; a second input interface corresponding to a second core diameter and a second cladding size; a thermally-tapered region wherein the variable core diameter of the fiber core transitions from the first core diameter to the second core diameter and the variable cladding size of the fiber cladding transitions from the first cladding size to a third cladding size; and an etched tapered region wherein the variable core diameter of the fiber core is constant and the variable cladding size of the fiber cladding transitions from the third cladding size to the second cladding size.

Abstract: Optical energy in excess of that which is properly coupled into the core of an optical fiber is non-destructively redirected and benignly dissipated so as to minimize damage in a fiber coupled system.

Abstract: A system is provided for combining laser light sources. The system includes: a stack of laser diode bar arrays, comprising two or more laser diode bar arrays, each laser diode bar array having multiple laser diodes; a multimode optical fiber; and a plurality of optical elements disposed between the stack of laser diode bar arrays and the multimode optical fiber, configured to direct light from the stack of laser diode bar arrays to the multimode optical fibers, the plurality of optical elements further including: a plurality of fast-axis collimating (FAC) lenses, wherein at least one FAC lens of the plurality of FAC lenses corresponds to each laser diode bar array. At least one FAC lens of the plurality of FAC lenses is misaligned with respect to the corresponding laser diode bar array.

Abstract: Optical energy in excess of that which is properly coupled into the core of an optical fiber is non-destructively redirected and benignly dissipated so as to minimize damage in a fiber coupled system.

Abstract: A system is provided for combining laser light sources. The system includes: a stack of laser diode bar arrays, comprising two or more laser diode bar arrays, each laser diode bar array having multiple laser diodes; a multimode optical fiber; and a plurality of optical elements disposed between the stack of laser diode bar arrays and the multimode optical fiber, configured to direct light from the stack of laser diode bar arrays to the multimode optical fibers, the plurality of optical elements further including: a plurality of fast-axis collimating (FAC) lenses, wherein at least one FAC lens of the plurality of FAC lenses corresponds to each laser diode bar array. At least one FAC lens of the plurality of FAC lenses is misaligned with respect to the corresponding laser diode bar array.