Wavelength-division multiplexing

About: Wavelength-division multiplexing is a research topic. Over the lifetime, 25059 publications have been published within this topic receiving 332027 citations. The topic is also known as: WDM.

11 × 5 × 9.3Gb/s WDM-CAP-PON based on optical single-side band multi-level multi-band carrier-less amplitude and phase modulation with direct detection.

Abstract: We propose and demonstrate a novel WDM-CAP-PON based on optical single-side band (OSSB) multi-level multi-band carrier-less amplitude and phase modulation (MM-CAP). To enable high-speed transmission with simplified optical network unit (ONU)-side digital signal processing, 4-level 5 sub-bands CAP-16 is used here, which is generated by the digital to analogue converter (DAC). Optical single-side band (OSSB) technology is applied to extend the transmission distance against the spectrum fading effect. As a proof of concept, the experiment successfully demonstrates 11 WDM channels, 55 sub-bands, for 55 users with 9.3-Gb/s per user (after removing 7% overhead for forward error correction (FEC)) in the downstream over 40-km SMF.

2.6 terabit/s WDM transmission experiment using optical duobinary coding

Abstract: The capability of 2.64 Tbit/s (132 ch./spl times/20 Gbit/s) WDM transmission over 120 km single mode fibre (SMF) is experimentally demonstrated. High density WDM signal with 0.6 bit/s/Hz spectrum efficiency is produced by optical duobinary coding.

Application of planar lightwave circuit platform to hybrid integrated optical WDM transmitter/receiver module

Abstract: The authors have fabricated an optical WDM module with a simple configuration using a PLC platform together with a spot-size converted LD (SS-LD) and a waveguide PD (WG-PD). Since the module can be formed simply by flip-chip bonding of the SS-LD and the WG-PD, this configuration reduces the number of components, and thus helps achieve a cost reduction.

Wavelength division multiplexing system

Abstract: An analog lightwave communication system comprises at least two optical transmitters for providing optical information signals at different optical wavelengths. A dense wavelength division multiplexer includes at least two inputs for receiving the optical information signals from the optical transmitters and multiplexes the optical information signals to a composite optical signal at an output. Each input of the dense wavelength division multiplexer comprises at least one optical resonant cavity comprising first and second reflecting materials spaced to permit resonance at a selected wavelength. A fiber optic transmission system coupled to the output of the dense wavelength division multiplexer receives the composite optical signal.

4 $\,\times\,$ 12.5 Gb/s WDM Optical Wireless Communication System for Indoor Applications

Abstract: A novel high-speed optical wireless communication system incorporating wavelength division multiplexing technology for indoor personal area networking applications is proposed in this paper. Even with the simplest single wide field-of-view (45°) nonimaging receiver, bit rate as high as 4 × 12.5 Gb/s has been successfully demonstrated by experiments. It is shown that error-free reception (bit error rate <; 10-9) can be achieved over the entire beam footprint of about 1 m, so limited mobility can be provided to subscribers. In addition, a new localization system based on this optical wireless communication system has also been proposed and verified by experiments. When these two systems are incorporated together, high-speed optical wireless communication with mobility feature can be provided to users over the entire room.