Current optical communication systems rely almost exclusively on multimode fibres for short- and medium-haul transmissions, and are now expanding into the long-haul arena. Ultra-high bandwidth applications are the main drive for this expansion, based on the ability to spatially multiplex data channels in multimode systems. Integrated photonics, on the other hand, although largely responsible fo...

The multimode and depolarized output beam of a highly multimode diode-pumped Yb-doped fiber amplifier is converted to a diffraction-limited, linearly polarized beam by a self-referencing two-wave-mixing process in an infrared-sensitive photorefractive crystal (Rh:BaTiO3). As much as 11.6 W of single-mode output is achieved with a 78% multimode-to-single-mode photorefractive conversion efficiency.

Multimode entanglement is an essential resource for quantum information processing and quantum metrology. However, multimode entangled states are generally constructed by targeting a specific graph configuration. This yields to a fixed experimental setup that therefore exhibits reduced versatility and scalability. Here we demonstrate an optical on-demand, reconfigurable multimode entangled stat...

Multimode optical fibers has emerged as the platform that will bridge gap between nonlinear optics in bulk media and single-mode fibers. However, understanding of transition these two research fields still remains incomplete despite numerous investigations intermodal phenomena spatiotemporal coupling. Some striking observed with ultrashort ultra-intense pulses (i.e., conical emission, harmonic ...

Quantum systems characterized by an interplay between several resonance scattering channels demonstrate very rich physics. To illustrate it we consider a multistage Kondo effect in nanodevices as paradigmatic model for multimode scattering. We show that the channel crosstalk results destructive interference modes. This can be controlled manipulating tunneling junctions multilevel and multitermi...

In opinion of substructure cascade, multimode feed network is composed of impedance transforming substructure and isolating substructure. Starting from the characteristic of the substructure in multimode feed network, a method of measurement for its three-port scatter parameters of substructure is presented, based on the applying of the available two-port vector network analyzer (VNA), consider...

The potential and the capacity of large core fibers possibility to use it as a transmission media is discussed.The transmission of spatial and temporal data down a multimode optical fiber is abstracted. The attempts to establish a multi channel link over multimode fibers is reviewed and different practical methods are compared and a multimode fiber link is presented in a model which can be appl...

Physical insights and characteristics of beam transformations based on multimode interference (MMI) in multimode waveguides are illuminated and analyzed. Our calculations show that, utilizing a short piece of cylindrical multimode waveguide, an input Gaussian beam can be readily transformed to frequently desired beams including top-hat, donut-shaped, taper-shaped, and Bessel-like beams in the F...