F. Bertinetto et al., STABILIZATION OF THE EMISSION FREQUENCY OF 1.54 MU-M DFB LASER-DIODESTO HYDROGEN IODIDE, IEEE photonics technology letters, 5(4), 1993, pp. 472-474
The emission frequency of 1.55 mum DFB lasers has been locked to absor
ption lines of hydrogen iodide for the first time. Absorption lines of
this gas located at wavelengths ranging from 1.534 to 1.594 mum have
been identified. They are proposed as new absolute wavelength referenc
es for EDFA based multichannel optical networks.