A highly dispersive wavelength division demultiplexer in InGaAlAs-InP for 1.5 mu m operation

Croston, I. R.; Morasca, S.

doi:10.1109/68.60775

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…In this paper, we verify that dispersions on PBG edges can increase ␤ 0,1 and decrease ␤ 0,2 greatly, such that 1 and 2 are separated in an ultra-short coupler length in transmission. Such a 1D PhC-assisted TMI wavelength filter is much shorter than the general TMI multiplexers [8,9], has less loss, and is easier to fabricate than 2D PhC waveguide filters. Figure 1 shows a 2D schematic design of a TMI wavelength filter assisted with a highly dispersive 1D photonic crystal structure.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐short wavelength filters using mode‐related dispersion in dual‐mode waveguides

Tsai

Lee

Chen

et al. 2005

Micro & Optical Tech Letters

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An ultra-short-wavelength filter using photonic band gap (PBG) mode-related dispersion in a two-moded waveguide is proposed. It is verified using the finite-difference time-domain (FDTD) method, such that two channels on the PBG edges are affected by opposite dispersive effects and can be separated by an ultra-short coupler length much shorter than the required length without the assistance of PBG dispersion.ABSTRACT: A novel low-profile omnidirectional circularly polarized antenna comprising a top-loaded cylindrical monopole and four printed arc-shaped dipoles is presented. The cylindrical monopole and four printed dipoles share a common feeding point and generate two orthogonal polarizations with a 90°phase difference, resulting in omnidirectional circular-polarization (CP) radiation in the azimuthal plane. The proposed antenna is also arranged in a compact structure with a low profile (less than 0.1 wavelength of the center operating frequency). A constructed prototype suitable for applications in a wireless local area network (WLAN) access point in the 2.4-GHz band is demonstrated.

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Section: Introductionmentioning

confidence: 99%