Optical Amplifiers for Telecommunications

Urquhart, Paul; López, Óscar García; Boyen, Guido; Brückmann, André

doi:10.1109/wisp.2007.4447524

Cited by 20 publications

(16 citation statements)

References 9 publications

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“…In addition, nonlinear effects can be enhanced by high power levels in the communication channels, generating crosstalk between them. Finding the compromise between the generated noise and crosstalk is one of the main challenges of these systems [69].…”

Section: Active Remote Fos Networkmentioning

confidence: 99%

Truly remote fiber optic sensor networks

Soto

López-Amo

2019

J. Phys. Photonics

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An overview of truly remote fiber optic sensors is presented in this work. It starts with a brief introduction of fiber optic sensor networks, showing their advantages and multiple applications. Then, the definition of truly remote networks is provided, and their main challenges discussed, such as increasing the sensing distance and the number of sensors interrogated. Several multiplexing techniques have been compared, such as wavelength, time and coherence division multiplexing. In relation to this, the most recent works showing multi wavelength fiber lasers for wavelength division multiplexing have been grouped and their versatility analyzed. Finally, recent and relevant truly remote fiber optic networks have been gathered and some of the most representative schemes explained in detail, comparing their multiplexing capability and the remoteness of the monitored sensors. Random distributed feedback fiber lasers form part of a number of these schemes, proving the suitability of this type of lasers for their use in ultra-long truly remote sensing applications.

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Section: Active Remote Fos Networkmentioning

confidence: 99%

Truly remote fiber optic sensor networks

Soto

López-Amo

2019

J. Phys. Photonics

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“…With the continued need for higher information capacity over increasingly longer transmission spans, optical amplifiers quickly became indispensable elements of optical communications networks. One of the enabling technologies [41] is Raman amplification, the main application of stimulated Raman scattering (SRS). Raman fiber amplifiers (RFAs) have low gains per unit length compared with erbium-doped fiber amplifiers (EDFAs) and semiconductor optical amplifiers (SOAs) [41].…”

Section: Optical Amplificationmentioning

confidence: 99%

Stimulated Raman Scattering and its Applications in Optical Communications and Optical Sensors

Baptista

Costa²,

Barbero³

et al. 2009

TOOPTSJ

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This review presents the stimulated Raman scattering and its applications in three areas: optical amplification, multiwavelength lasers and optical sensing. It is presented the basic concept of the Raman Scattering (SRS) phenomenon focusing in the in-line distributed/discrete Raman amplification applications and in multiwavelength generation for optical communications. The use of stimulated Raman scattering in optical sensors is also reviewed. Finally, the recent use of photonic crystal fibers and waveguide devices to generate the Raman effect is also addressed. © Frazão et al.; Licensee Bentham Open. This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

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“…Commercial devices for optical coherence tomography [2][3][4] and telecommunication [1] greatly benefit from the appealing features of spectrally broadband light-emitting quantum dot superluminescent diodes (QDSLDs). In such a QDSLD, light is generated in the regime of amplified spontaneous emission (ASE), i. e. right at the border between spontaneous and stimulated emission.…”

Section: Introductionmentioning

confidence: 99%

Emission spectrum of broadband quantum dot superluminescent diodes

Friedrich

Elsäßer

Walser

2020

Optics Communications

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We present a microscopic theory of the amplified spontaneous emission of a spectrally broadband quantum dot superluminescent diode within the quantum white noise limit. From this multimode quantum theory, we have the ability to obtain all orders of temporal correlation functions. In particular, we derive rate equations for the optical power densities, the level occupation of inhomogeneous ensemble of quantum dots within the diode, as well as the emitted optical spectra. As the main result, we find the external power spectrum as a convolution of the intra-diode photon spectrum with a Lorentzian response. Assuming a Gaussian light-matter coupling results in a similar shaped Gaussian output spectrum, which agrees very well with available experimental data.Keywords: quantum dot superluminescent diodes, power spectrum, ASE, amplified spontaneous emission, photon statistics, quantum dot, quantum fluctuation, Ito formalism, input-output formalism, quantum stochastic differential equations, multimode laser theory, rate equations, correlation function.

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Optical Amplifiers for Telecommunications

Cited by 20 publications

References 9 publications

Truly remote fiber optic sensor networks

Truly remote fiber optic sensor networks

Stimulated Raman Scattering and its Applications in Optical Communications and Optical Sensors

Emission spectrum of broadband quantum dot superluminescent diodes

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