Multiwavelength communications will require the establishment of absolute wavelengths for identification and routing. For this purpose we recorded high-resolution absorption spectra of C2HD and 13C2H2 between 1510 and 1550 nm, using a Fourier-transform spectrometer. Precise wavelength calibrations were performed by use of 87Rb lines and a commercial wavemeter. 50 lines of C2HD and 114 lines of 13C2H2 were calibrated and identified as rotation-vibration transitions. Lines P(14) of C2HD and R(7) of 13C2H2 were used to frequency stabilize two distributed-feedback lasers near 1529 nm. The square root of the Allan variance was 2 × 10-10 for τ > 10 S.
© 1994 Optical Society of America
C. Latrasse, M. Breton, M. Têtu, N. Cyr, R. Roberge, and B. Villeneuve, "C2HD and 13C2H2 absorption lines near 1530 nm for semiconductor-laser frequency locking," Opt. Lett. 19, 1885-1887 (1994)