Results 171 to 180 of about 1,028,755 (220)
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Optical Amplifiers and Their Applications, 2005
Simple experiments are used to determine ion-pairs percentage and macroscopic homogeneous upconversion in highly erbium-doped fibers. Using these parameters in a Giles-based model enable to predict Optical-Power-Conversion-Efficiency of WDM-EDFAs with a fair agreement.
C. Simonneau +3 more
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Simple experiments are used to determine ion-pairs percentage and macroscopic homogeneous upconversion in highly erbium-doped fibers. Using these parameters in a Giles-based model enable to predict Optical-Power-Conversion-Efficiency of WDM-EDFAs with a fair agreement.
C. Simonneau +3 more
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Optics and Spectroscopy, 2008
A new criterion—transmission capacity in the unsaturated gain regime—is proposed for comparing the quality of glasses for erbium-doped fiber amplifiers, considered as an element of an optical communication system. It is shown that, according to the criterion for the highest transmission capacity, amplifiers based on alumino-phosphate-silicate and zinc ...
Yu. A. Varaksa +2 more
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A new criterion—transmission capacity in the unsaturated gain regime—is proposed for comparing the quality of glasses for erbium-doped fiber amplifiers, considered as an element of an optical communication system. It is shown that, according to the criterion for the highest transmission capacity, amplifiers based on alumino-phosphate-silicate and zinc ...
Yu. A. Varaksa +2 more
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Performance analysis of erbium doped fiber amplifiers
2009 IEEE 17th Signal Processing and Communications Applications Conference, 2009In this study, gain characteristics of erbium doped fiber amplifiers, EDFAs, which are important elements of optical communications over C and L bands, are examined. The factors that effect the gain of an EDFA are given and the differences among some EDFA designs which operate on various wavelengths are determined.
Arisan, Buenyamin +3 more
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Laser Physics, 2009
Two erbium-doped fibers (EDFs) with different densities, which can make the erbium-doped fiber amplifier (EDFA) achieve the same output power, have been irradiated by 60Co at the same rate and same total dose. In addition, the irradiation effect on EDFA composed by different density EDFs is firstly analyzed in this paper.
M. Li +6 more
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Two erbium-doped fibers (EDFs) with different densities, which can make the erbium-doped fiber amplifier (EDFA) achieve the same output power, have been irradiated by 60Co at the same rate and same total dose. In addition, the irradiation effect on EDFA composed by different density EDFs is firstly analyzed in this paper.
M. Li +6 more
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Characterization of erbium doped fibers
2009In this thesis the theory of operation of single-mode erbium-doped fiber amplifiers pumped at 980 nm is described. Details of the derivation of the general rate equation for the propagation of signal, pump, and amplified spontaneous emission are provided. Based on this equation, and McCumber's theory of phonon-terminated optical masers, two closed form
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Erbium Doped Holey Fiber Devices
Optical Amplifiers and Their Applications/Integrated Photonics Research, 2004We fabricated an erbium-doped holey fiber, and demonstrate an all-fiber laser with ultra-low threshold (~0.5mW) and amplifier providing 47 dB of internal gain. Incorporating this amplifier within a ring-laser we demonstrate a tuning range over100nm.
Taichi Kogure +3 more
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Frequency doubling in erbium-doped fibers
Optical Materials, 1994Abstract Erbium-doped fibers have been prepared for frequency doubling with various input powers. Annealing experiments were carried out, and a single exponential decay in time was found for the conversion efficiency. An activation energy of ~ 0.2 eV was measured for two fibers with different Er 3+ concentrations. A peculiar modal evolution was also
I.B. Couceiro +4 more
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2018
An erbium-doped fiber amplifier (EDFA) has five main optical components: an erbium-doped fiber, a laser diode (LD) to pump the fiber, a wavelength-dependent fiber coupler, a polarization-independent optical isolator, and an optical bandpass filter. The LDs operate at wavelengths which include 1.48, 0.98, and 0.82 μm.
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An erbium-doped fiber amplifier (EDFA) has five main optical components: an erbium-doped fiber, a laser diode (LD) to pump the fiber, a wavelength-dependent fiber coupler, a polarization-independent optical isolator, and an optical bandpass filter. The LDs operate at wavelengths which include 1.48, 0.98, and 0.82 μm.
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Multicore erbium doped fiber amplifiers
SPIE Proceedings, 2016ABSTRACT We review recent progress of multi -core erbium -doped fiber amplifiers (MC -EDFA). We confirmed by demonstrating a core -pumped MC -EDFA that MC -EDFs have practical amplification characteristic s and core -to-core crosstalk . Three types of cladding -pumped MC -EDFAs are also reviewed , one uses free space optics, other uses a fiber b undled
Koichi Maeda +3 more
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Multifunctional Erbium Doped-Fiber Laser
Latin America Optics and Photonics Conference, 2010This work present a multifunctional Erbium doped fiber laser by the use of two arrayed waveguide gratings intracavity. The experimental setup allows simultaneous operation of three regimes: passive mode-locking, continuous wave and active mode ...
Cláudia B. Santos, Eunézio A. Souza
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