High-power parametric conversion from near-infrared to short-wave infrared

Billat, Adrien; Cordette, Steevy; Tseng, Yu-Pei; Kharitonov, Svyatoslav; Brès, Camille‐Sophie

doi:10.1364/oe.22.014341

Cited by 16 publications

(12 citation statements)

References 16 publications

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“…The simulation platform allows us to include the Kerr nonlinearity of the gain medium, an important parameter that is omitted in the simplified analytical description. We have previously observed moderate fourwave mixing (FWM) in a 4-m-long TDF as a complementary phenomenon during a multi-wavelength signal amplification in the 2 mm spectral region 16 . Given the relatively small TDF core size of approximately 4 mm in diameter and the high refractive index contrast (numerical aperture NA 5 0.26), the presence of FWM confirms the non-negligible nonlinear coefficient c of the thulium fiber.…”

Section: Bar Crmentioning

confidence: 98%

“…All-fiber core-pumped ring cavity TDF lasers (TDFL) exploiting fiberized grating-based filter 13,14 or Fabry-Pérot etalon 15 as a wavelength selective element and high-power cladding pumped holmium-doped fiber lasers 10 have been reported. Tunable sources based on parametric conversion and subsequent amplification in TDFs delivering more than 100 mW of continuous wave power while modulation capable were also recently demonstrated 16 .…”

Section: Introductionmentioning

confidence: 99%

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Isolator-free unidirectional thulium-doped fiber laser

Kharitonov

Brès

2015

Light Sci Appl

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We report the first demonstration of a unidirectional, isolator-free 2-mm thulium-doped fiber (TDF) laser, relying on the properties of the theta cavity (ring resonator with S-shaped feedback). The core pumped theta cavity TDF laser provides sub-Watt output power with a slope efficiency of 25%, a 2 dB flat tuning range of 1900-2050 nm, and a linewidth of 0.2 nm, and achieves the extinction ratio of 18-25 dB (depending on the feedback value) between the favored and suppressed lasing directions. It is shown that these characteristics are competitive with, if not superior to, those of conventional ring cavities. The simulation results of the linear and Kerr-nonlinear theta cavities are also presented, explaining certain unexpected features of the laser behavior and establishing the importance of the doped fiber nonlinearity on the spectral shaping of the emitted signal.

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Section: Bar Crmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Isolator-free unidirectional thulium-doped fiber laser

Kharitonov

Brès

2015

Light Sci Appl

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“…1 and relies on the simple combination of a parametric converter stage together with a linear amplifying stage directly pumped by the parametric pump [5]. Degenerate FWM in the fiber optic parametric amplifier (FOPA) annihilates two pump photons located in the C-L band and generates one signal photon in the O-band as well as an idler photon in the SWIR.…”

Section: Efficient Wavelength Conversion To the Swirmentioning

confidence: 99%

Efficient broadband parametric conversion: Reaching for the Mid IR

Brès

Billat

2016

2016 18th International Conference on Transparent Optical Networks (ICTON)

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In this paper, we report recent results on the efficient generation of SWIR sources exploiting broadband wavelength conversion in silica fibers. Optimized cavity-less designs of fiber parametric amplifiers (FOPA) associated with Thulium amplification capable of high CW powers, wide tunability and modulation will be presented. We also present how parametric conversion can be extended deeper in the Mid-IR by engineering of non-silica mixing platforms.Keywords: Mid-infrared sources, nonlinear optics, wavelength conversion IntroductionThe short-wave infrared (SWIR) and middle-infrared (Mid-IR) are a core bands for molecular detection and identification. Hence, it hosts critical applications ranging from spectroscopy, health monitoring, sensing as well as free space communication [1]. To fully exploit the advantages of such spectral bands, versatile light generation and all optical processing capabilities are key elements. Recent developments in fiber lasers have shown the emergence of medium power tunable continuouswave (CW) thulium-doped fiber lasers [2]. Pulsed operation can be achieved with optical parametric oscillators (OPO) or modelocked thulium-doped fiber lasers. They are widespread solutions despite possibly bulky setups, low repetition rates or limited tunability. Combining different mode of operations is also extremely difficult for a single architecture. An alternative approach to the generation of versatile sources is to rely on broadband wavelength conversion via degenerate four-wave mixing (FWM) [3]. The single pass and parametric nature of the process leads to replication of an initial signal to the targeted spectral band. However the low conversion efficiency of such broadband wavelength conversion limits achievable CW power or requires extremely high pump peak powers [4].Here we will cover some of the recent advances made on versatile SWIR sources based on broadband wavelength conversion in silica fibers. We will first show how such cavity-less design associating telecom-driven parametric conversion and thulium amplification can lead to efficient light generation in the 2 micron spectral band. Various optimized designs capable of providing wide versatility in terms of operating modes will be described. The cavity-less nature, parametric origin and flexibility of the proposed source can offer new opportunities for Mid-IR applications.

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“…While most of these experiments have only addressed the need for multicasting in the C-and L-band, fiber optical parametric amplifiers (FOPA) are able to generate powerful CW or intensity modulated light around 2 micron when they are used in conjunction with TDF amplifiers [5,6]. Moreover since the reported FOPAs are operating in the small signal regime, adding CW channels in O-band transparently results in the generation of multiple spaced channels in short-wave infrared (SWIR).…”

Section: Introductionmentioning

confidence: 99%