New version of seven wavelengths demultiplexer based on the microcavities in a two-dimensional photonic crystal

A new proposal for eight-channel optical demultiplexer based on photonic crystal resonant cavities

“…Such that in Ref. [25,27] and [31] the minimum transmission efficiency is 30, 24 and 40 %, respectively. However, in the proposed structure, the minimum transmission efficiency is 94 %.…”

Eight-channel all-optical demultiplexer based on photonic crystal resonant cavities

“…In [13], the average TE is low. In [14] the average channel spacing is very high and also the TE is low. In [15] everything looks well, but as we explained in the introduction, it cannot be fabricated because of the defect radii they chose.…”

“…Several attempts have been made recently to design an optical demultiplexer [12][13][14][15][16]. One of the most important parameters of the design of a device is its expansion possibility.…”

“…A compact WDM demultiplexer for seven channels in PCs has been proposed by Boumami et al [14]. They suggested a T-branch WDM demultiplexer.…”

An optical demultiplexer based on photonic crystal ring resonators

“…This structure was designed by locating two Fabry-Perot reflectors at the end of the bus waveguides. Very large channel spacing as much as 80 nm and very low transmission efficiency as low as 36% are the main drawbacks of the proposed structure [37]. 4 octagon shaped resonant rings were embedded inside 2D PhC for realizing a 4-channel demultiplexer which has 3 nm of channel spacing and 2600 of quality factor [38].…”