6/26/2023 0 Comments Reflector 2 license key 2016In particular, we achieve a comb-like transmission spectrum in the DBR band gap that is appropriate for optical filters and polarizers with ultra-narrow transmission bands. We propose an approach to avoid this requirement. As a result, the cavity layer thickness must be much larger than the photon wavelength. Since the transmission peaks are located in the band gap of the DBR, a small peak separation in the comb-like transmission is required. As compared to frequency combs, the comb-like transmission also has substantial advantages in optical frequency metrology 19, broadband gas sensing 20 and molecular fingerprinting 21. In this case, the semiconductor microcavity can serve as a multichannel optical filter. When the cavity layer is thick enough, the transmission of the semiconductor microcavity is comb-like with the peak separation being roughly inversely proportional to the thickness, namely, the distance between the two DBRs 4. Narrow-band filters can be realized by a semiconductor microcavity that consists of two DBRs and one cavity layer 17, 18. The most important applications of the DBR are optical switches 10, 11, lasers 12, 13, 14, sensors 15, couplers 3 and narrow-band filters 2, 4, 16. It attracts plenty of attention due to its high tunability and extensibility, which can be enhanced by introducing additional structures, for example, defects and gratings. A distributed Bragg reflector (DBR) is an important element widely used in optics 1, 2, 3, 4, 5, photonics 6, 7, 8, solar cells 9 and other fields.
0 Comments
Leave a Reply. |