English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

In the paper, we present a new general function photonic crystals (GFPCs),which refractive index of medium is a arbitrary function of space position.Unlike conventional photonic crystals (PCs), which structure grow from twomediums $A$ and $B$, with different constant refractive indexes $n_{a}$ and$n_{b}$. Based on Fermat principle, we give the motion equations of light inone-dimensional GFPCs, and calculate its transfer matrix, which is differentfrom the conventional PCs. We choose the linearity refractive index functionfor two mediums $A$ and $B$, and find the transmissivity of one-dimensionalGFPCs can be much larger or smaller than 1 for different slope linearityrefractive index function, which is different from the transmissivity ofconventional PCs (its transmissivity is in the range of 0 and 1). Otherwise, westudy the effect of different incident angles, the number of periods andoptical thickness on the transmissivity, and obtain some new results differentfrom the conventional PCs.

Transmission Character of General Function Photonic Crystals