Chromatic dispersion measurement for a few-mode fiber using optical frequency-domain reflectometer

Ahn, Tae-Jung; Jung, Yongmin; Oh, Kyunghwan; Kim, D.Y.

doi:10.1109/cleo.2006.4628662

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…Numerous reports have been published on techniques for determining dispersion characteristics, including the optical frequency-domain reflectometry [4], phase-sensitive optical low-coherence reflectometry [5], and modal interferometer method [6]. The interferometric technique for simultaneously measuring the DGD of each core in few-mode multi-core fibers (FM-MCFs) has been reported [7].…”

Section: Introductionmentioning

confidence: 99%

Differential group delay measurements of few-mode fibers using an interferometric technique

et al. 2020

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Section: Introductionmentioning

confidence: 99%

Differential group delay measurements of few-mode fibers using an interferometric technique

et al. 2020

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“…Many reports have been published on techniques for measuring the dispersion characteristics of FMF, including optical frequency-domain reflectometry [3], phase-sensitive optical low-coherence reflectometry [4], and modal interferometer method [5]. According to [5], the chromatic dispersion in the LP11 mode can be estimated by measuring the differential group delay between the LP01 and the LP11 modes in conjunction with the group delay time in the LP01 mode.…”

Section: Introductionmentioning

confidence: 99%

Direct technique for measuring chromatic dispersion of high-order mode in a few-mode fiber

et al. 2018

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Abstract:We propose an interferometric technique for directly measuring the chromatic dispersion of the high-order mode in a few-mode fiber (FMF) by using a mode converter (MC). We successfully estimate the chromatic dispersion of the LP11 mode in the test fiber by using the proposed technique. Keywords: interferometer, chromatic dispersion, few-mode fiber, mode converter Classification: Fiber-Optic Transmission for Communications [4] P. Hamel, Y. Jaouën, R. Gabet, and S. Ramachandran, "Optical low-coherence reflectometry for complete chromatic dispersion characterization of few-mode fibers," Opt. Lett., vol. 32, pp.1029Lett., vol. 32, pp. -1031Lett., vol. 32, pp. , 2007

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“…Since the cutoff wavelengths of these telecommunication fibers are typically > 1μm, (e.g. for SMF28, the cutoff wavelength is ~1200nm), only a few modes, instead of hundreds of modes, can thus be supported by the FMFs [9,10].…”

Section: Introductionmentioning

confidence: 99%

Dispersive Fourier transform using few-mode fibers for real-time and high-speed spectroscopy

Qiu

Zhang

Wong

et al. 2012

Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XII

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Dispersive Fourier Transform (DFT) is a powerful technique for real-time and high-speed spectroscopy. In DFT, the spectral information of an optical pulse is mapped into time using group velocity dispersion (GVD) in the dispersive fibers with an ultrafast real-time spectral acquisition rate (>10 MHz). Typically, multi-mode fiber (MMF) is not recommended for performing DFT because the modal dispersion, which occurs simultaneously with GVD, introduces the ambiguity in the wavelength-to-time mapping during DFT. Nevertheless, we here demonstrate that a clear wavelength-to-time mapping in DFT can be achieved by using the few-mode fibers (FMFs) which, instead of having hundreds of propagation modes, support only a few modes. FMF-based DFT becomes appealing when it operates at the shorter wavelengths e.g. 1-μm range--a favorable spectral window for biomedical diagnostics, where low-cost single mode fibers (SMFs) and high-performance dispersion-engineered fibers are not readily available for DFT. By employing the telecommunication SMFs (e.g. SMF28), which are in effect FMFs in the 1-μm range as their cut-off wavelength is ~1260 nm, we observe that a 3nm wide spectrum can be clearly mapped into time with a GVD as high as -72ps/nm and a loss of 5 dB/km at a spectral acquisition rate of 20 MHz. Moreover, its larger core size than the high-cost 1-μm SMFs renders FMFs to exhibit less nonlinearity, especially high-power amplification is implemented during DFT to enhance the detection sensitivity without compromising the speed. Hence, FMF-based DFT represents a cost-effective approach to realize high-speed DFT-based spectroscopy particularly in the biomedical diagnostics spectral window.

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Chromatic dispersion measurement for a few-mode fiber using optical frequency-domain reflectometer

Cited by 6 publications

References 6 publications

Differential group delay measurements of few-mode fibers using an interferometric technique

Differential group delay measurements of few-mode fibers using an interferometric technique

Direct technique for measuring chromatic dispersion of high-order mode in a few-mode fiber

Dispersive Fourier transform using few-mode fibers for real-time and high-speed spectroscopy

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