Spectral filtering of gain gratings and spectral evolution of holographic laser oscillators

Minassian, A.; Crofts, G.J.; Damzen, M. J.

doi:10.1109/3.848352

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…Dynamic grating can be generated by use of gain saturation effect in rare-earth-metal-doped optical fibers [85][86][87] or stimulated Brillouin scattering (SBS) process in optical fibers [88][89][90][91][92][93] and even in a photonic chip [94]. Dynamic grating is more advantageous for certain applications than fiber Bragg grating (FBG) [95] because it can be dynamically constructed using two coherent pump waves while FBG is static after fabrication.…”

Section: Concept Of Brillouin Dynamic Gratingmentioning

confidence: 99%

Brillouin Scattering in Optical Fibers and Its Application to Distributed Sensors

Zou¹,

Long²,

Chen³

2015

Advances in Optical Fiber Technology: Fundamental Optical Phenomena and Applications

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This chapter introduces the basic principle and recent advances of Brillouin scattering in optical fibers. The working mechanism, different interrogation techniques, difficulty or challenge of the sensing ability, and recent breakthroughs of Brillouin based distributed optical fiber sensors are demonstrated, respectively. 2. Brillouin scattering in optical fibers 2.1. Principle Light scattering phenomena in optical fibers occur regardless of how intense the incident optical power is. They can be basically categorized into two groups, i.e. spontaneous scattering and stimulated scattering[1]. Spontaneous scattering refers to the process under conditions such that the material properties are unaffected by the presence of the incident optical fields.

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Section: Concept Of Brillouin Dynamic Gratingmentioning

confidence: 99%

Brillouin Scattering in Optical Fibers and Its Application to Distributed Sensors

Zou¹,

Long²,

Chen³

2015

Advances in Optical Fiber Technology: Fundamental Optical Phenomena and Applications

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“…The gain grating simultaneously realizes a passive Q-switch, acts as a narrow-band spectral filter [9,10] and as a phase-conjugating element in these resonators. Recently, a novel approach to coherent beam combination using gain gratings has been reported [11].…”

Section: Introductionmentioning

confidence: 99%

“…These applications motivated several analytical and numerical descriptions of DFWM inside saturable gain media [9,10,[12][13][14][15]. To the best of our knowledge all of these descriptions are limited to one spatial dimension along the principal propagation direction of the pump beams.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional modeling of transient gain gratings in saturable gain media

Elsner¹,

Ullmann²,

Heuer³

et al. 2012

Opt. Express

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A transient two-dimensional model describing degenerate four-wave mixing inside saturable gain media is presented. The new model is compared to existing one-dimensional models with their qualitative results confirmed. Large quantitative differences with respect to peak reflectivity and optimum pump fluence are observed. Furthermore, the influence of the beam focus size, the transverse position and the crossing angle on the reflectivity of the grating is investigated using the improved model. It is demonstrated that the phase conjugate reflectivity depends sensitively on the transverse features of the interacting beams with a transverse shift in the position of the pump beams yielding a threefold improvement in reflectivity.

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“…ynamic grating can be generated by the use of gain saturation effect in rare-earth-metal-doped optical fibers [1][2][3] or stimulated Brillouin scattering (SBS) process in optical fibers. [4][5][6][7][8][9][10] Dynamic grating is more advantageous for certain applications than fiber Bragg grating (FBG) 11) because it can be dynamically constructed using two coherent pump waves while FBG is static after fabrication.…”

mentioning

confidence: 99%

Spectral Analysis of Brillouin Dynamic Grating Based on Heterodyne Detection

Zou¹,

Chen²

2013

Appl. Phys. Express

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Spectral analysis based on heterodyne detection is used to investigate Brillouin dynamic grating (BDG) in a small-core polarization-maintaining optical fiber. Thanks to direct heterodyning of the readout and diffraction waves, essential BDG properties can be fully investigated. It is experimentally characterized that the BDG diffraction wave has an identical frequency downshift from the readout wave as the pump–probe frequency offset in the BDG generation, which straightforwardly verifies the theoretical estimation of the BDG's phase-matching condition for the first time to our best knowledge. The spectral analysis also confirms that the maximum power of the main peak changes in the same way with the stimulated Brillouin gain and has an exponential (linear) dependence on the pump (probe) power.

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Spectral filtering of gain gratings and spectral evolution of holographic laser oscillators

Cited by 6 publications

References 24 publications

Brillouin Scattering in Optical Fibers and Its Application to Distributed Sensors

Brillouin Scattering in Optical Fibers and Its Application to Distributed Sensors

Two-dimensional modeling of transient gain gratings in saturable gain media

Spectral Analysis of Brillouin Dynamic Grating Based on Heterodyne Detection

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