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A novel design of a bi-directional triplexer based on Bragg grating assisted multi-mode interference (MMI) coupler is proposed in this letter. The MMI coupler de/multiplexes the upload 1310nm channel and the download 1490nm channel, while the grating reflects the download 1550nm channel to the other download port. The bandwidths for 1310nm, 1490nm and 1550nm are about 110nm, 50nm, and 15nm, respectively.
Depending on the application in optical communication systems different wavelength division multiplexing devices are used to increase network capacity by allowing several wavelength channels to be transmitted by one fiber, to add or drop different wavelength channels or to separate or put together channels carrying different services. Depending on the application such devices can have wide, coarse...
Wavelength division multiplexing systems use multiplexers and demultiplexers to increase network capacity by allowing several information channels to be placed into one fiber. Depending on the application multiplexers and demultiplexers can have wide, coarse or dense channel spacing as well as different number of channels that they process. There are many techniques available today for realization...
Silicon nanowire waveguides and related etched diffraction grating (EDG) demultiplexers are studied by alpha-Si-on-SiO2 technology. Compact EDG demultiplexers with 10 nm spacing for both echelle and total-internal-reflection (TIR) facets have been fabricated and characterized.
A polarization-insensitive design of an echelle grating (or etched diffraction grating) demultiplexer based on silicon nanowires is proposed in the present letter, by introducing a polarization compensation area in its free propagation region. The polarization-dependent wavelength shift of the present device has been compensated at the whole spectral range. For a design with nine channels and 10-nm...
We present some theoretical and experimental results of etched diffraction grating demultiplexer based on amorphous silicon nanowire platform, including issues with polarization sensitivity, diffraction efficiency and an application to triplexer.
We present fabrication and measurement results of an ultracompact silicon-on-insulator-based echelle-grating triplexer, which uses different diffraction orders to cover a large spectral range from 1.3 mum to 1.5 mum, with a footprint of 150 mum times 200 mum.
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