Mode-dependent loss measurement of a two-mode fiber using a conventional OTDR

Kubota, Hirokazu; Miyoshi, Y.; Ohashi, M.; Mori, Takahide; Matsui, Takashi; Nakajima, Kazuhide

doi:10.1587/comex.2016xbl0150

Cited by 7 publications

(2 citation statements)

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“…The electrical signals from the PDs are sampled by a Lecroy SDA 11000 with a sampling rate of 40 GSa/s. The measured signals are averaged 2 16 times. The 3-mode FMF under-test, a step-index fiber, is about 9.8-km long.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

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Simultaneous Measurement of MDL and DMGD in FMFs by Analyzing the Rayleigh Backscattering Amplitudes

Feng

Chen

et al. 2019

IEEE Photonics J.

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In this paper, we propose and experimentally demonstrate a novel method for simultaneously measuring mode-dependent loss (MDL) and differential modal group delay (DMGD) in few mode fibers (FMFs). This method is based on analyzing the Rayleigh backscattering amplitudes obtained with a special nondestructive measurement system. With this method, the MDL and DMGD in about 9.8 km 3-mode fiber are successfully measured, which are 0.186 dB and 3.581 ps/m between LP 01 and LP 11a and 0.157 dB and 3.604 ps/m between LP 01 and LP 11b, respectively. Then, the experimental results of DMGD and MDL with different methods are compared, which show that the values of DMGD and MDL obtained by the proposed method agree well with that using the time-of-flight (TOF) and conventional transmission methods, respectively. In addition, it is also demonstrated that the proposed scheme can be scalable to measure FMFs with a large number of modes.

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Section: Experimental Setup and Resultsmentioning

confidence: 99%

“…In terms of MDL measurement, it is essential to separate the propagating modes. The MDL is always measured with cutback or insertion methods combining mode multiplexers or mode converters, such as mode couplers or phase plates [16]. But these methods are destructive.…”

Section: Introductionmentioning

confidence: 99%