Results 21 to 30 of about 149,510 (298)

Training Sequence-Based Chromatic Dispersion Estimation With Ultra-Low Sampling Rate for Optical Fiber Communication Systems

open access: yesIEEE Photonics Journal, 2018
We present a novel method to estimate chromatic dispersion with ultra-low sampling rate based on training sequence. The under-sampling can be equivalent to over-sampling by splicing points with periodic sequence.
Yiwen Ma   +6 more
doaj   +1 more source

Theoretical Analysis of Heat Distribution in Raman Fiber Lasers and Amplifiers Employing Pure Passive Fiber

open access: yesIEEE Photonics Journal, 2020
In this paper, we study the thermal dissipation of Raman fiber laser and amplifier utilizing pure passive fiber as gain medium for the first time. Take into account the convective and conductive heat transferring process in the fiber, we consider the ...
Yizhu Chen   +4 more
doaj   +1 more source

Large-signal theory of the effect of dispersive propagation on the intensity modulation response of semiconductor lasers [PDF]

open access: yes, 2000
We have derived an exact large-signal theory of propagation in a dispersive fiber of an optical wave with sinusoidal amplitude and frequency modulation. This has been applied to the study of large-signal direct-modulation of semiconductor lasers.
Peral, Eva, Yariv, Amnon
core   +1 more source

Simultaneous Measurement of Shape and Temperature in the Substrate-Attaching-Fibers Sensing System

open access: yesIEEE Photonics Journal, 2017
We design a dual-parameter sensor which can simultaneously measure the shape and temperature in the substrate-attaching-fibers sensing system. Two kinds of fibers with different diameter are attached on a shape memory alloy wire substrate with an angle ...
Shiyuan Zhao   +4 more
doaj   +1 more source

Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback [PDF]

open access: yes, 2014
We present a simple method for narrowing the intrinsic Lorentzian linewidth of a commercial ultraviolet grating extended-cavity diode laser (TOPTICA DL Pro) using weak optical feedback from a long external cavity.
Braverman, Boris   +9 more
core   +2 more sources

Hardware-Efficient Phase Estimation for Digital Coherent Transmission With Star Constellation QAM

open access: yesIEEE Photonics Journal, 2010
In order to build optical transmission systems for 100 Gb/s and above on a single wavelength division multiplexing channel, transition from quadrature phase-shift keying (QPSK) to higher quadrature amplitude modulation (QAM) formats seems to be ...
Sebastian Hoffmann   +6 more
doaj   +1 more source

Flexible delivery of Er:YAG radiation at 2.94 µm with negative curvature silica glass fibers:a new solution for minimally invasive surgical procedures [PDF]

open access: yes, 2012
We present the delivery of high energy microsecond pulses through a hollow-core negative-curvature fiber at 2.94 µm. The energy densities delivered far exceed those required for biological tissue manipulation and are of the order of 2300 J/cm(2).
Hand, Duncan Paul   +5 more
core   +1 more source

Dual polarization nonlinear Fourier transform-based optical communication system [PDF]

open access: yes, 2017
New services and applications are causing an exponential increase in internet traffic. In a few years, current fiber optic communication system infrastructure will not be able to meet this demand because fiber nonlinearity dramatically limits the ...
Gaiarin, Simone   +4 more
core   +3 more sources

Asymmetrical Fiber Mach–Zehnder Interferometer for Simultaneous Measurement of Axial Strain and Temperature

open access: yesIEEE Photonics Journal, 2010
An asymmetrical fiber Mach-Zehnder interferometer (aFMZI) consisting of a fiber taper and a lateral-shifted junction is proposed and demonstrated to realize simultaneous measurement of axial strain and temperature.
Ping Lu, Qiying Chen
doaj   +1 more source

Toward a compact fibered squeezing parametric source

open access: yes, 2018
In this work, we investigate three different compact fibered systems generating vacuum squeezing that involve optical cavities limited by the end surface of a fiber and by a curved mirror and containing a thin parametric crystal.
Brieussel, Alexandre   +4 more
core   +1 more source

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