Results in Physics (Dec 2020)
Dispersion engineering of W2 steeple-house-defect waveguide photonic crystal
Abstract
An epitome for dispersion and buffering in a photonic crystal was set forth. Slots in the form of a line of contacted steeple-houses are implanted in a two-line photonic crystal waveguide (2LPCW) to form an irregular slot of steeple-house defect PCW (SDPCW) to realize bandwidth expanding and a significant regulator for group delay (GD), group velocity dispersion (GVD) and group delay dispersion (GDD) effects. The SDPCW was compared with other types of defects reported in this study and in the literature previously, we fulfilled the highest favorable value of buffering capacity about 210.256 bits. Furthermore, low GDD is achieved in the range from 1ps2to 10ps2 for 1 mm delay line length. The SDPCW may be appropriate for the workable application, which has a utility in coupling enhancement between the cavities as it was observed from the field distribution detected over confined spatial light along the propagation path for enhancing the transmission bandwidth, buffering properties and outstanding tolerance to fabrication errors. Moreover, stopping and/or slowing the light has an excessive advantage in the store of quantum states of light for an adequately long time to make quantum operations. Besides, the SDPCW achieved high electro-optical (EO) sensitivity about 244.42 nm/RIU. Thus, the proposed SDPCW can be used for enhancing the interaction between light and the sensing medium.
