TDLAS architecture for widely spaced wavelengths
US11513069B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2020 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Oct 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3672
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems for measuring a concentration of a target species include a first and second tunable diode laser generating laser light at a respective first and second wavelength each corresponding to respective absorption lines of the target species. A first optical fiber is optically coupled to the first tunable diode laser, and does not support a fundamental mode at the second wavelength. A second optical fiber is coupled to the second tunable diode laser and does not support a fundamental mode at the first wavelength. A fiber bundle includes respective distal ends of the first and second optical fibers, which are stripped of their respective coatings and arranged with their claddings adjacent to each other. A pitch head is configured to project respective optical beams from the fiber bundle through a measurement zone. A catch head located across the measurement zone receives the projected beams and directs them to a sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.