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  • Optimization of Fusion Splice Process for High Numerical Aperture Coupler Fiber and Erbium Doped Fiber (.pdf)
    Fusion splicing erbium doped fiber (EDF) to other single mode fibers has become more critical as the required overall insertion loss for erbium doped fiber amplifiers (EDFA) has significantly decreased in the last few years. In this paper, we describe and discuss an approach to developing a low
  • Increased Pulsed Amplifier Efficiency by Manipulating the Fiber Dopant Distribution (.pdf)
    Cladding pumped fiber lasers and amplifiers have emerged as a competing technology for solid state lasers. In order to obtain high powers and mitigate nonlinear effects large mode area (LMA) rare-earth doped fibers have been used [1-3]. In LMA fibers, the area of the fundamental mode of the fiber
  • Optical fibers keep an eye on sensor connections
    With Omron's new E3X-DA-N digital fiber-optic amplifier, up to 16 sensors can be easily stacked together. With this setup, a "master " amplifier distributes power to "slave " amplifiers via a "master " connector. As a result, the power lines that each slave amplifier normally requires
  • Testing Optical Feeds in Wireless Systems
    Many wireless equipment vendors are transitioning from coax cables to lower-loss optical feeds in Remote Radio Units (RRU) and Distributed Antenna Systems (DAS). The switchover is due to the fact that fiber optic cabling has less signal loss and supports higher bandwidth over greater distances than
  • Phase Conjugate Laser Optics - Preface
    beam, master-oscillator power-amplifier (MOPA). configurations are demonstrated in Chapter 4 in which both liquid and glass fiber. Brillouin conjugators are used. The fiber presents the advantages of compactness. and lower energy threshold due to the long interaction length of the fiber medium. However
  • Wired 9.08: Beam On
    arsenide, which produces a longer, 980-nanometer infrared beam. Used in an erbium-doped amplifier, a pump laser fires its beam down a 100-meter optical fiber that terminates in an impregnated segment. The beam excites the erbium atoms, which then add their energy to optical data signals passing
  • MICRO: Product Technology News (October 2000)
    in an automated system. They can accommodate 8-in. wafers and 6-in.-diam masks. A single objective can be used with bright-field, dark-field, and differential interference contrast observation techniques. A digital fiber-optic amplifier comes in a remote control version that includes special
  • Photonic chips take a step towards practical applications
    fourwave mixing "pumps " or amplifies a light signal using another light source as the two beams travel inside a narrow waveguide. Although four-wave mixing amplifiers have been made with optical fibers, such devices are tens of meters long. The current waveguide is a silicon channel just 300 550 nm

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