Optical coupling between coated fibers in a compact fiber ribbon

• Published in: Journal of lightwave technology Vol. 4; no. 3; pp. 335 - 340
• Main Authors: Hatano, S., Kokubun, T., Shin Sumida, Katsuyama, Y.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 1986; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Exact sciences and technology; High speed optical techniques; Optical buffering; Optical coupling; Optical crosstalk; Optical distortion; Optical fiber cables; Optical fibers; Optical network units; Optical refraction; Optical variables control; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Optical cable; Optical coupling; Coatings; Optical telecommunication; Optical fiber
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.1986.1074719

Optical coupling between coated optical fibers in a fiber ribbon for use in compact and high-density optical cable is described. By means of a measurement system having a sensitivity of -70 dB. optical coupling of -40 dB due to a small radius fiber bend is measured for an actual fiber ribbon coated with UV-curable resin. The optical coupling mechanism is discussed using analysis models of a coated optical fiber bend. Theoretical analyses and experimental results confirm that optical coupling occurs only when the refractive indices of coating materials satisfy the condition of radiating light traveling from a fiber core to a ribbon coat.