Analysis and Optimization of Compact Demultiplexer Monitor Based on Photonic-Crystal Waveguide

Graphene nanoribbons: Photonic crystal waveguide analogy and minigap stripes

“…One may then expect specific dips in the transmission. Equivalent phononic 15 and photonic phenomena have been recently documented, notably in the author's group under the name of mini-stopband, as further discussed later [16][17][18][19] in relation to the generic Fig. 1͑b͒ presenting the dispersion relation of a broad PhC waveguide.…”

“…Due to folding, the Dirac point lies at some fractional position of the supercell BZ for values such as N z =2, 4,8,16. For N z =3,6,..., the Dirac point lies at the very zone center.…”

Photonic-Crystal Demultiplexer With Improved Crosstalk by Second-Order Cavity Filtering

“…This latter couples the modes whose dominant propagation constant differ by , being the lattice constant of the PhC, coinciding with the waveguide periodicity in the preferred case of a triangular lattice of holes with waveguide along the dense row, also known as the K direction. The effects of zone-folding and the applicability of coupled mode theory to this situation has been amply demonstrated in previous work [10], [12], [19]- [21].…”

“…The good news that can be drawn from this set of simulations are twofold: 1) it confirms the obtainment of adjustable lineshape around the square-top profile; 2) it confirms that the B-B/A-B structure is sound and effective in terms of cascading channels rather tightly. This was more cumbersome to check with CMT [10], on one hand, because of the task of matching modes, but also because of the neglect of scattering at the waveguide width change: although this latter effect is fortunately weak for the fundamental mode, it is in principle felt more strongly by the HOM. However, no specific penalty could be attributed to this mismatch in the present simulation.…”

“…1(a)]. It was first implemented in the so-called "substrate" option on InP-based systems [10]- [13]. Then, as a result of a common effort within the European project FUNFOX, a membrane InP implementation was successfully demonstrated [14]- [16], together with compact 12 grating couplers to address the chip from out-of-plane fibers.…”