Optical losses at angle relative rotation in photonic crystal fiber connections

Filipenko, A. I.; Sychova, Oksana; Ponomaryova, Ganna

doi:10.1109/infocommst.2015.7357283

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…To determine the center of the mode field intensity distribution, the two-dimensional autoconvolution function of this distribution was used 7 :…”

Section: Determination Of the Photonic Crystal Fiber Mode Field Maxim...mentioning

confidence: 99%

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Study of the influence structures inconsistency of photonic crystal fibers cross-sectional on the characteristics of their connection process

Filipenko,

Sychova,

Novoselov

2024

Speckle 2023: VIII International Conference on Speckle Metrology

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In this work, the near-field method is used to measure the diameter of the mode field, which allows define not only the diameter of the mode field, but also to determine the geometric parameters of the fiber position. The method is based on measuring the diameter of the mode field at the fiber output end using focused optics, which transmits the radiation power distribution along the end of the fiber to the site of the matrix photoreceiver. The most accurate measurement results with small errors can be obtained if detectors with a large dynamic range and carefully prepared fiber ends are used. The resulting image of the mode field is filtered from the noise influence and is subject to further processing. The method of automated positioning of two photonic crystal fibers, based on the autoconvolution procedure, takes into account the angle of mutual rotation of the fibers around their longitudinal axis. This allows taking into account the structure of the mode field of the fiber during the connection process and reducing optical signal losses due to the difference in mode fields in the case of connecting identical fibers. Algorithmic and software was developed that implements the proposed method and allows automating the process of controlling the positioning of photonic crystal fibers according to the size and shape of the photonic crystal fiber mode field.

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“…To determine the center of the mode field intensity distribution, the two-dimensional autoconvolution function of this distribution was used 7 :…”

Section: Determination Of the Photonic Crystal Fiber Mode Field Maxim...mentioning

confidence: 99%

“…For this reason, optics with NA > 0.5 should be used. The dynamic range of control systems based on the near-field method should be more than 40...45 dB 7 .…”

Section: Determination Of the Photonic Crystal Fiber Mode Field Maxim...mentioning

confidence: 99%