Patent
All optical RF signal channelizer
TLDR
A channelizer for signals for optically channelizing RF signals modulated onto an optical carrier by optically separating the RF signals and mapping the RF signal by way of an optically dispersive element, such as a diffraction grating as mentioned in this paper.Abstract:
A channelizer for signals for optically channelizing RF signals modulated onto an optical carrier by optically separating the RF signals and mapping the RF signals by way of an optically dispersive element, such as a diffraction grating. In an alternate embodiment of the invention, two stages of optical filters elements are provided in series to perform sequential channelization. Bragg reflection gratings are used for coarse filtering into predetermined bands while Fabry-Perot filters tuned to specific sub-bands of the Bragg reflection gratings are used for channelization. In alternate embodiments of the invention, a silica planar waveguide and an optical splitting device, such as a Talbot splitter, are used.read more
Citations
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References
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Journal ArticleDOI
Silica-based single-mode waveguides on silicon and their application to guided-wave optical interferometers
TL;DR: In this article, low-loss silica-based singlemode waveguides and directional couplers are fabricated on silicon substrates and their application to Mach-Zehnder interferometer type guided-wave devices is demonstrated.
Patent
Optical multiplexer/demultiplexer
TL;DR: The optical multiplexer/demultiplexer as mentioned in this paper is built from a plurality of optical waveguides, each waveguide differs in length from its neighboring waveguide by a predetermined amount.
Journal ArticleDOI
Silica-based integrated optic Mach-Zehnder multi/demultiplexer family with channel spacing of 0.01-250 nm
TL;DR: A Mach-Zehnder (MZ) interferometer design is presented for application to wavelength-divisionmultiplexed/frequency division multiplexed (WDM/FDM) systems and a variety of integrated-optic devices with low loss and low crosstalk, using silica-based waveguides, are demonstrated.
Journal ArticleDOI
Novel 1‐to‐N way integrated optical beam splitters using symmetric mode mixing in GaAs/AlGaAs multimode waveguides
TL;DR: In this article, a GaAs/AlGaAs integrated optical 1-to-N way beam splitters using symmetric mode mixing in center-fed multimode planar waveguides is described.
Journal ArticleDOI
Low-loss high-silica single-mode channel waveguides
TL;DR: In this article, a low-loss high-silica single-mode channel optical waveguides of 0.1 dB/cm have been fabricated on crystal silicon substrates with fibre coupling losses of less than 0.05 dB by flame hydrolysis deposition and reactive ion etching.