What is extinction ratio formula for hybrid plasmonic waveguides?
Dear Prof. Mohammadpour,
I don't know, it is not my field of research. I am sorry.
With best regards,
Vilmos Simon
By definition, the extinction ratio is the ratio of the power of a plane-polarized beam that is transmitted through a polarizer placed in its path with its polarizing axis parallel to the beam's plane, as compared with the transmitted power when the polarizer's axis is perpendicular to the beam's plane.
The extinction ratio is used to describe the efficiency with which the transmitted optical power is modulated over the fiber-optic transport. It's simply the relationship of the power used in transmitting a logic level "1" (P1) to the power used in transmitting a logic level "0" (P0). Extinction ratio can be defined as a linear ratio, P1/P0; as a power measurement, 10 * log(P1/P0); or as a percentage, (P0/P1) * 100. The convention adopted for logic levels is that transmission of light (laser on) represents a logic "1" and no light transmission (laser off) represents a logic "0."
To be concrete, in the polarization splitting system you can use Eqs. (3) and (4) from this paper (see, also Fig. 1a in it)
https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-20-23-25345&id=244664
Jingyee Chee, Shiyang Zhu, and G. Q. Lo, "CMOS compatible polarization splitter using hybrid plasmonic waveguide, " Optics Express, 20, 25345
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Semiconductor