Band-Pass filters allow for the selection of narrow bands in the frequency ranges of 0.1-1.2 THz. These filters utilize multilayer frequency selective surfaces to achieve a desired frequency response. The allowed bandwidth varies with center frequency, from 10 GHz to 200 GHz.
| POLARIZER MODEL | CENTER LINE (GHz) | Transmission Band FWHM (GHz) | CLEAR APERTURE | PEAK TRANSMISSION |
| BP-0112 | 112 | 13.4 | 70 | 92% |
| BP-0132 | 132 | 15.8 | 70 | 92% |
| BP-0156 | 156 | 18.7 | 70 | 92% |
| BP-0188 | 188 | 22.6 | 70 | 92% |
| BP-0224 | 224 | 26.9 | 70 | 92% |
| BP-0264 | 264 | 31.7 | 70 | 92% |
| BP-0312 | 312 | 37.4 | 70 | 92% |
| BP-0376 | 376 | 45.1 | 70 | 92% |
| BP-0600 | 600 | 167 | 50 | 97% |
| BP-1000 | 1000 | 235 | 50 | 95% |
