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Tucson, AZ, United States

Patent
AdValue Photonics, Inc. | Date: 2014-01-27

An optical fiber which includes a core region embedded within a cladding. The core region of the optical fiber further comprises multiple sections, each doped with rare earth ions.


Grant
Agency: Department of Defense | Branch: Air Force | Program: STTR | Phase: Phase I | Award Amount: 148.90K | Year: 2015

ABSTRACT: The development of mid-infrared (Mid-IR) transparent fibers having low propagation loss in the wavelength range 2-5 micron, robust mechanical properties, low temperature sensitivity and high laser power delivery capability has been investigated extensively in the last decade. Chalcogenide glass fibers, fluoride glass fibers, tellurite glass fibers, and microstructured silica fibers have been studied in details by many groups around the world. Here we propose to develop an innovative robust mid-IR optical fiber to meet this difficult challenge. During Phase I we will demonstrate this innovative technical approach by fabricating and characterizing fibers. In Phase II we shall demonstrate production of mid-IR fiber for transport of high power (> 100 W) laser output in the 2-5 micron region with less than 0.3dB/m loss, with bend radii


Grant
Agency: Department of Defense | Branch: Missile Defense Agency | Program: SBIR | Phase: Phase I | Award Amount: 99.85K | Year: 2016

Through years of experience developing low loss fiber pump combiners operating to multi kilowatt (kW) levels, Optical Engines has mastered the technology for producing fiber optic tapers with precise dimensions and very low loss. This technology allows for the transition to tapers in the Photonic wire region where the fiber core dimensions are much less than 10 micrometers and the mode field diameter (MFD) becomes very large. This extended mode field can provide a means of creating low loss mode coupling to a bi directional receiver fiber. The Phase I portion of this proposal will demonstrate consistent tap coupling based on photonic wire technology and tested to over 100 watts. In Phase II a fully functioning multi kW will be developed, fabricated and demonstrated. Approved for Public Release 16-MDA-8620 (1 April 16)


Grant
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase I | Award Amount: 123.26K | Year: 2015

In this proposal, we propose to demonstrate and build high pulse energy near 1.55 micron wavelength single frequency fiber laser by developing an innovative polarization maintaining Er-doped gain fiber with extremely large mode field diameter. Such a single frequency high energy and high peak power fiber laser is needed for coherent lidar and sensing. We will enhance the radiation resistance of the gain fiber in order to make it suitable for NASA's applications. In Phase I, we will design and fabricate Er-doped glasses, fiber preforms, and fibers. High pulse energy will be demonstrated. This proposed system will be all-fiber based, which offers excellent reliability. Successful demonstration of such a fiber laser can enable many new NASA and commercial applications.


Grant
Agency: Department of Defense | Branch: Air Force | Program: SBIR | Phase: Phase II | Award Amount: 999.51K | Year: 2014

ABSTRACT: Coherent imaging systems have the capability to provide high-resolution 3D imagery for target identification at stand-off ranges. These systems require relatively short pulse width, transform-limited linewidth pulsed lasers with high pulse energy to illuminate the target of interest. Here we proposed to demonstrate and build near 1550nm single frequency fiber laser with pulse energy of greater than 10mJ and pulse width of 30ns to 300ns by using our innovative Er-doped glass fibers. The laser beam should have near diffraction limited beam quality to reach the desired targets and detectors. BENEFIT: This proposed single frequency high energy and high peak power fiber laser can be used as innovative lidar component for wind lidar, measurements of the atmosphere and gas contents of the Earth, and ranging. It also can be used as light source for optical sensing.

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