21.4 Gb/s Discrete Multitone Transmission over 50-m SI-POF employing 6-channel WDM

Bandpass transmission filters based on phase shifted fiber Bragg gratings in microstructured polymer optical fibers

“…Present communication systems over POF use a single channel for data transmission, but in recent years, there is a growing interest to develop wavelength division multiplexed (WDM) systems in order to increase the maximum data rate over a single fiber keeping the mentioned advantages [19][20][21]. In such networks, either bulk devices and/or couplers are employed to mux/demux different channels [20].…”

Efficient Multiplexer/Demultiplexer for Visible WDM Transmission over SI-POF Technology

“…On the other hand, polymer optical fiber (POF) has been proposed, and recognized, as one of the most promising transmission media for implementing high speed and low cost short-range communication networks [1]. Specifically, in scenarios, such as local area networks, inhome, and office networks [3], as well as in automotive [4] and avionic multimedia buses, or in data center interconnections [5]. Among the different POF types, the step index POF (SI-POF) with a 980 μm core diameter of polymethyl-methacrylate (PMMA) and numerical aperture (NA) of ∼0.5 offers several advantages, especially in the short-range scenarios listed previously, due to its potential low cost for its easiness of handling, installation, splicing and connecting.…”

“…Current proposals of visible WDM transmission over SI-POF are based on spectral grids with chs between 400 and 700 nm [12], using LDs. Visible WDM systems using offline-processed DMT modulation, and data rates up to 14.77 [13] and 21 Gbit/s [5] over 50 m, with 4 and 6 chs, respectively, have been recently reported. In both systems, the average data rate per ch is about 3.5 Gbit/s with bit error rate of 1×10 −3 .…”

“…This can be overcome by reducing the Muxes/DeMuxes' ILs, and/or increasing the transmission power. But the latter solution increases the system power consumption and is only suitable for scenarios where working outside the eye-safety-limit is allowed [5], [13]. Mux/DeMux devices with ILs 3.5 dB per ch allow to establish SI-POF visible WDM systems with transmission power per ch near to the eye safety limit (<1 mW), that can be used in network topologies [14], where the fiber containing all the WDM chs is kept away from the end user.…”

“…(3), (4), (5) Ellipsoid and Spherical grating mirrors (1200 lines/mm) 1 ∼30 × 26 (1) 480, 520 630 (1) 30 [23], 2008…”