| 摘要 |
A method and system for providing wavelength-locked multi-channel signals with respect to a wavelength reference. Wavelengths of a plurality of radiation sources are introduced to at least one etalon having a gas medium. The etalon produces a plurality of equally spaced spectral lines and is tuned by varying its optical index of refraction, by varying the characteristics of its gas medium. The optical index of refraction is then fixed, by fixing the characteristics of its gas medium, and thus locking the plurality of spectral lines with respect to the wavelength reference. In particular, the etalons may be tuned by varying the pressure or composition of their gas-tunable mediums until the spectral lines of the etalon align with the ITU grid.
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