We propose all-fiber mode multiplexer composed of two consecutive LP₁₁ mode selective couplers that allows for the multiplexing of LP₀₁ mode and two-fold degenerate LP₁₁ modes. We demonstrate WDM transmission of 32 wavelength channels with 100 GHz spacing, each carrying 3 modes of 120 Gb/s polarization division multiplexed quadrature phase shifted keying (PDM-QPSK) signal, over 560 km of few-mo...

Two signal multiplexing strategies for multi-user optical fiber communication are considered: Wavelength-division multiplexing (WDM) and nonlinear frequency-division multiplexing (NFDM), based on the nonlinear Fourier transform (NFT). The inverse NFT is implemented using an approach that is dual of the forward NFT and does not require solving integral equations. In contrast to prior work where ...

In this work, we study probabilistic shaping (PS) for optical wireless communications and apply the technique to wavelength division multiplexing (WDM) based visible light communication (VLC). The performance of proposed scheme is validated with an experimental demonstration. set up uses lenses collimate beam triple LEDs. system parameters WDM VLC are then optimised, channel response measured, ...

Optical communications by dense wavelength division multiplexing (DWDM or WDM), which uses a number of wavelengths and a signal on each wavelength channel for transmission, has made massive progress as a high-speed, high-capacity optical communication system for the Internet age. A crucial device in this kind of communication system is the optical wavelength filter used to separate out the wave...

This is a tutorial paper on the traffic grooming optimization in mesh Wavelength Division Multiplexing (WDM) networks for static traffic patterns. The traffic grooming technique provides a two-layer traffic engineering capability by aggregating and routing low-bandwidth traffic flows from the upper layer over re-configurable highbandwidth connections in the lower layer. This paper demonstrates ...

This paper proposes an analytical model for evaluating the performance of dense wavelength division multiplexing (DWDM) for all optical orthogonal frequency division multiplexing (AO-OFDM) optical wireless channel. The investigated performance for proposed system is evaluated for the parameters  bit error rate (BER) and Q factor .The constellation diagrams, and bit error rate (BER) of the recei...

In the last chapter, we assume that each source-destination (s-d) pair has its taffic demand equal to an integer multiple of wavelength unit. Accordingly, supporting such traffic in transparent wavelength division multiplexing (WDM) networks can be done by establishing lightpaths between s-d pairs. In addition, these established lightpaths will be fully utilized. In this chapter, we allow for s...

In this paper we look at evolutionary upgrade paths to Wavelength Division Multiplexing (WDM) on an Ethernet Passive Optical Network (EPON). We then propose a method for providing an evolutionary upgrade to WDM in EPONs. We specifically outline an extension to the MultiPoint Control Protocol (MPCP) defined by the IEEE 802.3ah committee to allow for the evolutionary upgrade to WDM within an EPON...

Blocking probability has been one of the significant parameters in the design of WDM optical networks. In most of the network topologies the probability for each link to be occupied is different. There are always some links which are more likely to be used than others which can be denoted as key links. The existing routing algorithms do not take this important factor into account significantly....

Wavelength-division multiplexing (WDM) technology has been improving steadily in recent years, with existing systems capable of providing huge amounts of bandwidth on a single fiber link. WDM systems are currently being deployed in long-distance telecommunication networks on a point-to-point basis, with the optical signals being converted back to electronics at each node. The electronic switchi...