| 摘要 |
The invention is related to an optical device comprising, in an housing (1) with a defined gas atmosphere: a wavelength monitor, for monitoring an optical signal, including an etalon (2) with a gap between two etalon plates, at least one other opto electronic component, and means for influencing the temperature (3) of at least one of the opto electronic components. The invention is also related to special means to influence the gas density in the gap between the etalon plates.
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