Seven-core multicore fiber transmissions for passive optical network

Abstract

We design and fabricate a novel multicore fiber (MCF), with seven cores arranged in a hexagonal array. The fiber properties of MCF including low crosstalk, attenuation and splice loss are described. A new tapered MCF connector (TMC), showing ultra-low crosstalk and losses, is also designed and fabricated for coupling the individual signals in-and-out of the MCF. We further propose a novel network configuration using parallel transmissions with the MCF and TMC for passive optical network (PON). To the best of our knowledge, we demonstrate the first bi-directional parallel transmissions of 1310 nm and 1490 nm signals over 11.3-km of seven-core MCF with 64-way splitter for PON.

Brillouin scattering effect in the multicore optical fiber applied to fiber optic shape sensing

“…The tested MCF7 sample was 26 m long. Both ends of the MCF7 were spliced to tapered multicore fiber connectors (TMC) 18 , which enable light injection and detection into and from each core separately. The measurement is performed with 1 m spatial resolution using a standard distributed feedback laser operating at 1551 nm as a light source.…”

Development and Future of Optical Fiber Related Technologies

“…We can introduce and lead out the light to/from each core by using optical fibers with a diameter that is sufficiently small to avoid interference with adjacent cores in the multi-core fiber. Tapered fibers may be used in place of small diameter fibers [19]. The end-section of normal optical fiber is been deformed by a thermal source to make its end diameter small enough not to interfere with adjacent cores in the multi-core fiber.…”

Multicore Fibre Fan-In/Fan-Out Device using Fibre Optic Collimators

“…In the case of multicore fibre (MCF), spatial multiplexers/demultiplexers are referred to as fan-in/fan-out (FIFO) devices and are used to efficiently couple light from individual single mode fibres to each core of the MC and vice versa. Various configurations have been reported so far but the most common techniques use: 1) fused tapers [4], 2) 3D waveguides [5] and 3) free space optics [6]. Each of these approaches has its own merits, but it is still challenging to realize low crosstalk (XT) for high density MCFs having a small core pitch distance.…”