WDM and DWDM optical filter based on 2D photonic crystal Thue–Morse structure

Very compact photonic crystal resonant cavity for all optical filtering

“…Another optical filter using resonant cavity based on photonic crystal structures has been proposed using a periodic structure, in which a 2D ThueMorse structure is used [18]. The resonant part of the filter in this work is an L4 cavity, but the transmission efficiency was much higher than the periodic structure [19].…”

“…Resonant cavities [17] and ring resonators [18,19] are the most popular structures used for designing all optical photonic crystal based filters. Alipour et al [17] studied the filtering properties of an L4 resonant cavity.…”

A novel all optical reversible 4 × 2 encoder based on photonic crystals

“…We can create a defect in photonic crystal structure in order to disrupt unrighteousness periodic structure and pass the specific wavelengths within the band gap of the structure. Then, there are designed a lot of optical devices using photonic crystals including Optical Demultiplexers, Optical Filters, Optical Switches, Optical Memories and Optical Modulators [19][20][21][22][23][24][25][26][27][28][29]. Optical logical gates such as: OR, NOR, NAND, XNOR and AND are designed based upon photonic Crystals [30][31][32].…”

A novel optical filter based on H-shape photonic crystal ring resonators

“…A variety of structures have been proposed for designing all optical PhC based filters such as defective multilayers [20], quasi crystal defects [21], resonant cavities [22][23], and ring resonators [24]. An add-drop filter based on photonic crystal ring resonators (PhCRR) have been proposed by Qiang et al [25].…”