Thursday 30 November 2017 photo 9/15
![]() ![]() ![]() |
Self imaging waveguide sizes: >> http://bvq.cloudz.pw/download?file=self+imaging+waveguide+sizes << (Download)
Self imaging waveguide sizes: >> http://bvq.cloudz.pw/read?file=self+imaging+waveguide+sizes << (Read Online)
splitting ratios, low insertion loss, and compact size. Previous designs of IO beamsplitters used cascaded Y-junction branches [1] or evanescent field couplers [2]; but, more recently, computer-generated waveguide holograms [3], radiative power splitters [4], [5], and self-imaging beamsplitters [6] have been demonstrated.
Self-imaging phenomena in periodic dielectric waveguides has been predicted and investigated based on multimode interference effect by using the plane wave expansion method and the finite-difference time-domain method. Asymmetric and symmetric interferences were discussed and respective imaging positions were
The possibility ofMMl production in gradient-index waveguides made by ion exchange in glass is also presented. low loss, small size and ease of fabrication make MM] structures attractive for advanced multimode interference, self-imaging, optical splitters, Mach-Zehnder interferometer. input field, the wide multimode
ABSTRACT. The imaging properties of multimode dielectric waveguides of rectangular cross-section, having a homogeneous refractive index nf, are investigated theoretically and experimentally. Two-dimensional self-images are formed by the phase coincidences of a large number of modes if the effective cross- section of
We propose a metal isosceles right triangle waveguide (IRTW), derive its self-imaging period length and investigate its image transmission property theoretically. We show that the output image at the cross section of semi-self-imaging period length is symmetrical about the x = ?y-axis compared with input image. Additionally
modes, a phenomenon that occurs periodically along the waveguide length [5]. This phenomenon takes place even when the multimode waveguide is comprised of an optically amplifying medium where the input beam is amplified as it is self-imaged along the waveguide. The use of this self-imaging amplifier is restricted to
waveguide. Besides this fact, in this letter we show that a waveguide with a rectangular cross section can be turned to a focusing system by using three-dimensional self-imaging technique. We obtained a configuration where the focus of the field lies outside the waveguide, in air, with a spot size of approximately the
waveguide, power splitter, multi-mode interference. 1. Introduction. Multimode interference (MMI) effect has been ob- served on planar lightwave circuits (PLC) structures based on step index waveguides since early 1990s [1]. The first possibility of existence self-imaging effects in gradient- index waveguides made by
Self-collimation and self-imaging are comparatively investigated for discretized light in engineered modulated arrays of optical waveguides. It is shown direction, which may be larger than the diffraction length of the beam [11], [12] and [15] and (iii) self-collimation is typically a non-resonant effect, whereas self-imaging it is.
Annons