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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 34,
  • Issue 23,
  • pp. 5561-5565
  • (2016)

Intercore Coupling Effects in Multicore Optical Fiber Tapers Using Magnetic Fluid Out-Claddings

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Abstract

We demonstrate a compact and functional light coupling device based on a multicore optical fiber and a ferrofluidic out-cladding. This magnetic field tuned light coupler was fabricated by tapering down a multicore optical fiber for extending modal profile of the individual cores, while introducing light coupling between them; then, using the ferrofluidic overlayer for affecting the evanescence field of the outer cores through magneto-refractivity. Coupling effects between 2.5 and 4.5 dB were measured between the central core of the multicore fiber and the outer cores, with the application of a magnetic field flux of 50G. This intercore coupling photonic device may find application in sensing, communications, imaging, and laser beam delivery

© 2016 IEEE

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