Metallic structure and opto-electronic apparatus

摘要

A metallic structure and an opto-electronic apparatus are provided. The metallic structure is used for filtering or polarizing an electromagnetic wave, and includes a light-permissible medium, a first metallic block and a second metallic block. The first and second metallic blocks are parallel to and spaced from each other at a predetermined distance (d), and are disposed inside or over the light-permissible medium. After passing through the metallic structure, the electromagnetic wave has a distribution curve of transmittance versus wavelength, wherein the distribution curve has at least one transmittance peak value corresponding to at least one wavelength in a one-to-one manner. The aforementioned predetermined distance (d) and an averaged width of the first metallic block satisfy the following relationships: d<λ; 0.01λ

主权项

1. A metallic structure for filtering or polarizing an electromagnetic wave, the metallic structure comprising:
a light-transmissible medium; a first metallic block disposed inside or over the light-transmissible medium; and a second metallic block disposed inside or over the light-transmissible medium, wherein the first metallic block and the second metallic block are parallel to and spaced from each other at a predetermined distance, wherein the electromagnetic wave is incident on the first metallic block and the second metallic block and into between the first metallic block and the second metallic block, and after passing through the metallic structure, the electromagnetic wave has a distribution curve of transmittance versus wavelength, wherein the distribution curve has at least one transmittance peak value, and the at least one transmittance peak value is corresponding to at least one wavelength in a one-to-one manner, the predetermined distance and an averaged width of the first metallic block satisfying the following relationships:
d<λ;0.01λl<2λ, wherein l represents the averaged length of the first metallic block;
wherein λ is corresponding to one of the at least one transmittance peak value, and the one of at least one transmittance peak value is a first transmittance peak value, and the first transmittance peak value is greater than 10%, and a spectrum half width corresponding to between the wavelength of the first transmittance peak value and the wavelength whose transmittance is 70% of the first transmittance peak value is smaller than 2λ/3.