Design and spectral characteristics of gain-flattened tellurite-based fiber Raman amplifiers

Masuda, H.; Mori, Akira; Shikano, K.; Shimizu, Makoto

doi:10.1109/jlt.2005.860149

Cited by 34 publications

(11 citation statements)

References 20 publications

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“…Figure 15 shows the amplifier configuration. 42) This optical amplifier has a two-stage configuration with the distributed FRA section as the first stage and the discrete FRA section as the second stage. The discrete FRA section itself consists of three stages connected in series with tellurite-based fiber for the first and third stages and silica DCF for the second stage.…”

Section: Jcs-japanmentioning

confidence: 99%

Tellurite-based fibers and their applications to optical communication networks

Mori

2008

J. Ceram. Soc. Japan

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This paper reviews tellurite-based fibers and their applications to optical communication networks. First, an investigation of tellurite-based glass and the fabrication of conventional step-index fibers and photonic crystal fibers (PCF) are described. By purifying the raw materials and employing a novel PCF fabrication process, low background losses were achieved for an Er 3+ -doped, an undoped tellurite-based fiber and a tellurite-based PCF. Second, the optical properties of Er 3+ -doped tellurite-based glass and fiber, and the gain characteristics of erbium doped tellurite fiber amplifiers (EDTFAs) were studied. A seamless, low noise and gain flattened C + L band EDTFA was realized, and an S + C + L band amplifier was constructed by combining an EDTFA and a thulium-doped fluoride fiber amplifier (TDFFA) in parallel. Third, it is confirmed that the Raman scattering characteristic of tellurite-based fiber has such a large gain coefficient and Stokes shift that it is possible achieve a wideband tellurite-based fiber Raman amplifier. To overcome several problems, a distributed/discrete hybrid tellurite-and silica-based fiber Raman amplifier (FRA) was constructed as an S + C + L band WDM repeater with a gain bandwidth of 127-nm. Fourth, Brillouin amplification and the simulated performance of slow light generation in a tellurite-based fiber were investigated. The fiber exhibits the largest time delay per unit power of 19.9 ns/mW. Finally, a carrier-envelope offset (CEO)-locked frequency comb with low fiber coupling pulse energy (230 pJ) was demonstrated by using a tellurite-based PCF. This method has the potential to lock the CEO with a lower pulse energy and thus provide a low-noise and high-accuracy optical frequency comb at telecommunication wavelengths. These tellurite-based fibers with low background loss thus offer attractive functions for applications in the optical communication field.

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Section: Jcs-japanmentioning

confidence: 99%

Tellurite-based fibers and their applications to optical communication networks

Mori

2008

J. Ceram. Soc. Japan

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“…Broadband amplification in tellurite-based fibers has already been achieved for wavelength ranges up to 160 nm [14], [15]. Even though high average gains higher than 10 dB were obtained in those systems, no special care was taken into significantly reducing the values of ripple, which were of the order of 10 dB in [14] and more than 20 dB in [15]. This issue was addressed in [13] where a ripple as low as 1 dB could be achieved for a wavelength band of 160 nm.…”

Section: Study and Optimization Of Raman Amplifiersmentioning

confidence: 99%

Study and Optimization of Raman Amplifiers in Tellurite-Based Optical Fibers for Wide-Band Telecommunication Systems

Andrade

Rocha

Segatto

et al. 2019

J. Microw. Optoelectron. Electromagn. Appl.

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Here we present a numerical analysis and the optimization of a multi-pump discrete Raman amplification system based on the use of a Tellurite optical fiber as the gain media. By using previously reported optimization techniques we were able to exploit the high Raman gain of Tellurite optical fibers and its multipeak spectrum to achieve amplification over an amplification band from 1520 to 1600 nm. Average gains around 10 dB with ripples in the region of 3 dB were achieved using only 3 pumps with less than 800 mW each. Optimized systems were obtained for different lengths of fiber showing that discrete Raman amplifiers based on tellurite fibers with lengths as short as 100 meters can provide high gains and low ripples in a broad wavelength band. Lower cost systems using only 2 pumps were also analyzed in this study providing 5.8 dB of gain with only 2.4 dB of ripple for an 80 nm signal bandwidth.

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“…These glasses are well known for their high density, high refractive index, high dielectric constants, a wide band infrared transmittance and large third order non-linear optical susceptibility and numerous devices including optical amplifiers, planar waveguides and nano wires have been fabricated using tellurite glasses [1][2][3][4][5][6] . A variety of studies on mechanical, electrical and optical properties of tellurium based glasses with different modifiers are present in literature [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of F ions on physical and optical properties of fluorine substituted zinc arsenic tellurite glasses

Ahmmad

kondaul

Rahman

2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The effect of substitution of fluoride ions for oxide ions on the physical and optical properties of glass system (20-x) ZnO-xZnF 2 -40As 2 O 3 -40TeO 2 where x = 0, 4, 8,12,16,20 mole % were investigated. The samples prepared by melt quenching method under controlled condition. The amorphous nature of these glasses was checked by X-ray diffraction technique. The density was measured according to Archimedes principle. The room temperature absorption spectra of all glass samples were determined using UV-Vis-NIR spectrometer. The thermal behaviour, glass transition temperature and stability of glass samples were studied by a differential scanning calorimetric (DSC). The density reduction of present glasses with ZnF 2 concentrations may be due to the low density of ZnF 2 compared with that of ZnO. Breaking the oxide network, the cross linking degree of the glass former could be reduced which results in decrease of both T g and T x . In the present glass system when F ions replaced by oxygen ions UV-Vis absorption cut-off wavelength decreases. This resulted form the conversion of structural unit in the glass from TeO 4 to Te(O,F) 4 and then to Te(O, F) 3 .

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Design and spectral characteristics of gain-flattened tellurite-based fiber Raman amplifiers

Cited by 34 publications

References 20 publications

Tellurite-based fibers and their applications to optical communication networks

Tellurite-based fibers and their applications to optical communication networks

Study and Optimization of Raman Amplifiers in Tellurite-Based Optical Fibers for Wide-Band Telecommunication Systems

Effect of F ions on physical and optical properties of fluorine substituted zinc arsenic tellurite glasses

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