Conversion of femtosecond pulses from the 15- to the 13-μm region by self-phase-modulation-mediated four-wave mixing

Su, Zhirui; Xian, Zhu; Sibbett, W.

doi:10.1364/josab.10.001050

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…It is easy to deduce that ∆β cannot vanish in SMFs for any non-degenerate FWM process unless one operates at wavelengths near the zero group-velocity dispersion (β 2 ∼ 0). Indeed, FWM in standard SMFs typically requires other techniques to realize phase matching, such as the use of nonlinear phase shifts [16], or the use of birefringent fibers [17].…”

Section: Im-fwm In Fmfs and Phase-matching Conditionmentioning

confidence: 99%

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Theory of intermodal four-wave mixing with random linear mode coupling in few-mode fibers

Xiao¹,

Essiambre²,

Desgroseilliers³

et al. 2014

Opt. Express

105

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We study intermodal four-wave mixing (FWM) in few-mode fibers in the presence of birefringence fluctuations and random linear mode coupling. Two different intermodal FWM processes are investigated by including all nonlinear contributions to the phase-matching condition and FWM bandwidth. We find that one of the FWM processes has a much larger bandwidth than the other. We include random linear mode coupling among fiber modes using three different models based on an analysis of the impact of random coupling on differences of propagation constants between modes. We find that random coupling always reduces the FWM efficiency relative to its vale in the absence of linear coupling. The reduction factor is relatively small (about 3 dB) when only a few modes are linearly coupled but can become very large (> 40 dB) when all modes couple strongly. In the limit of a coupling length much shorter than the nonlinear length, intermodal FWM efficiency becomes vanishingly small. These results should prove useful in the context of space-division multiplexing with few-mode and multimode fibers.

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Section: Im-fwm In Fmfs and Phase-matching Conditionmentioning

confidence: 99%

“…Looking from the efficiency curve for PROC2, the amount of wavelength shift between the dashed-green curve [P = (10, 10, 6) dBm] and solid-purple curve with "+" marker [P = (10,16,6) dBm] is about 0.09 nm. This wavelength shift can be estimated using Eq.…”

Section: Bandwidth Analysis For Proc1 and Proc2mentioning

confidence: 99%

Theory of intermodal four-wave mixing with random linear mode coupling in few-mode fibers

Xiao¹,

Essiambre²,

Desgroseilliers³

et al. 2014

Opt. Express

105

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“…7 Recently, a frequency shift of 100 cm Ϫ1 was observed in 6.1 m of microstructure fiber, which had a small core ͑1.7 m͒ for nonlinear enhancement. 8 The FWM technique has also been used for converting femtosecond pulses at 1.5 to 1.3 m. 9 However, material and waveguide dispersion, which contribute to phase mismatch and group velocity differences, have made it difficult to achieve highly nondegenerate FWM with femtosecond pulses. The advent of fiber with ''engineered'' dispersion and nonlinearity profiles has mitigated these problems.…”

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confidence: 99%

Highly nondegenerate femtosecond four-wave mixing in tapered microstructure fiber

Abedin

Gopinath

Ippen

et al. 2002

Applied Physics Letters

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We demonstrate efficient, highly nondegenerate four-wave mixing of femtosecond pulses, with a frequency shift of ∼6000 cm−1, in an 18 cm tapered microstructure fiber. Using a pump at 810 nm and a signal at 1540 nm, light is generated at wavelengths between 535 nm and 570 nm with 10% efficiency. Due to the walk-off between pump and signal pulses in the fiber, the interaction length in the tapered fiber is only 1.4 cm. Ten percent efficiency is achieved in this short length because of the enhanced nonlinearity of the tapered fiber and its unique dispersion characteristics.

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The Optical Fibre

Vallée¹

2001

Springer Series in Photonics

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Conversion of femtosecond pulses from the 15- to the 13-μm region by self-phase-modulation-mediated four-wave mixing

Cited by 7 publications

References 3 publications

Theory of intermodal four-wave mixing with random linear mode coupling in few-mode fibers

Theory of intermodal four-wave mixing with random linear mode coupling in few-mode fibers

Highly nondegenerate femtosecond four-wave mixing in tapered microstructure fiber

The Optical Fibre

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