Transmission delay variations in OPGW and overhead fiber-optic cable links

Serizawa, Y.; Myoujin, Masanori; Miyazaki, Shôzo; Kitamura, K.

doi:10.1109/61.634154

Cited by 22 publications

(4 citation statements)

References 9 publications

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“…The typical change of the optical transmission time of a pulse through of a fiber with temperature change is 40 ps/(km•K) which causes drifts in the bit phase [17]. Such drifts, over a long time scale and an enormous number of bits as well as short variations over several bit slots, will have to be adapted in future meshed OTDM networks.…”

Section: Network Aspectsmentioning

confidence: 99%

160 Gb/s OTDM networking using deployed fiber

Turkiewicz

Tangdiongga

Lehmann³

et al. 2005

J. Lightwave Technol.

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DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal. If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement:

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Section: Network Aspectsmentioning

confidence: 99%

160 Gb/s OTDM networking using deployed fiber

Turkiewicz

Tangdiongga

Lehmann³

et al. 2005

J. Lightwave Technol.

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“…The effect of the link type in the overhead link extends to a shorter time region than that in the underground link. The reason for this can be explained as follows: when a temperature change occurs in a fiberoptic cable, variations of fiber temperature and stress are induced, which causes delay variations [13]. Overhead cables, which are exposed to ambient air temperature changes and direct sunshine, are subject to more changes in temperature than underground cables.…”

Section: Delay Variations Of Fiberoptic Cable Linksmentioning

confidence: 99%

A method of constructing an SDH-based time transfer network and its experimental examination

Serizawa¹,

Kitamura

Myoujin

et al. 2000

Elect. Eng. Jpn.

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In this paper we propose a simplified SDH (Synchronous Digital Hierarchy)‐based time synchronous system that does not require the modification of existing SDH transmission equipment (STE) and clock supply equipment (CSE). The system has auxiliary time synchronizing equipment (TSE) attached to existing STE and CSE and can be expanded in a cascade and branch manner, where frequency and time are separately synchronized, and which enables us to partially time‐synchronize an SDH network or to introduce a time transfer network locally. Experimental time synchronizing devices using a 576‐kbps data communication channel (DCC) in the section overhead (SOH) showed potentially satisfactory performance, with synchronization errors of a four‐link system on the order of submicroseconds. Noise analyses of experimental TSE, DCC, CSE, and optical links showed that accuracy on the order of microseconds can be achieved. © 2000 Scripta Technica, Electr Eng Jpn, 132(2): 39–48, 2000

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“…Yuqing did the condition monitoring of OPLC cable by using the optical fiber temperature monitoring technology [12]. In previous researches, the work that had been carried out by most of the researchers is related to the electric field analysis, thermal analysis, magnetic field analysis, structural optimization by considering the thermal field and condition monitoring [13][14][15]. The simulation study was conducted by Wang on the optical fiber to relate the increase of stress due to increase of temperature in bare optical fiber [16] but the study was not enough because of an absence of experimental setup also the simulation study includes only the bare fiber.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Analysis of Temperature and Stress Distribution in Optical Fiber Composite Low Voltage Cable Using Finite Element Method

Ashfaq

Yao

et al. 2020

IEEE Access

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Optical fiber composite low voltage cable (OPLC) is an optimized way of carrying out the function of supplying electrical power and communication signals in a single cable. In this paper, the temperature and stress distribution in OPLC cable is analyzed by using the finite element method as the current increases to maximum capacity. The increase of temperature and stress are the two main factors that affect the additional attenuation in optical fiber. This additional attenuation can be reduced by selecting the optimal heat resistant layer for the optical unit that limits the increase of temperature and stress at the optical fiber. The analysis is carried out for three different kinds of materials by using the finite element method FEM and among them, thermoplastic elastomer TPE is chosen as a heat resistant layer as it restricts the temperature and stress at rated current of 92 A to the minimum values of 69°C and 7.90×10 7 N/m 2 respectively. The OPLC cable with TPE as a heat resistant material for the optical unit is put in the experimental setup to analyze the temperature and stress increase inside the cable in real-time using the BOTDA analyzer at normal and under overload condition and compared with the simulation results to verify the correct selection of optimal heat resistant layer for optical unit. INDEX TERMS Attenuation, current density, finite element simulation, multi-field coupling model, stress distribution, thermal field.

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Transmission delay variations in OPGW and overhead fiber-optic cable links

Cited by 22 publications

References 9 publications

160 Gb/s OTDM networking using deployed fiber

160 Gb/s OTDM networking using deployed fiber

A method of constructing an SDH-based time transfer network and its experimental examination

Comprehensive Analysis of Temperature and Stress Distribution in Optical Fiber Composite Low Voltage Cable Using Finite Element Method

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