1 April 1999 Erbium-ytterbium miniaturized laser devices for optical communications
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In this work we review the most recent results obtained by our group on miniaturized diode-pumped Er-Yb:glass lasers of potential interest for optical communication applications. In single frequency operation we achieved output powers larger than 25 mW using a 200-micrometers length microchip laser and in excess of 100 mW, with a large tunability over the wavelength range between 1528 nm and 1564 nm, using a 5-mm length resonator containing an intracavity 50-micrometers thick Polarcor etalon. The Er-Yb microlaser has been locked and frequency stabilized at a level better than 1 X 10-9 to C2H2 and 13C2H2 absorption lines in the wavelength range from 1530 nm to 1550 nm, to built a narrow-linewidth absolute frequency reference in this spectral region suitable for WDM applications. A 30-dB suppression of the intensity noise peak at the relaxation oscillation frequency has been obtained and a relative intensity noise level of less than -160 dB/Hz at frequencies higher than 20 MHz is expected. In pulsed operation regime, picosecond pulse trains with repetition rate up to 10 GHz have been generated by either the FM mode-locking and a novel technique based on frequency modulation operation of the laser followed by external spectral filtering of the optical field, able to produce transform-limited single and dual-wavelength pulse trains particularly suitable for soliton transmission.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Paolo Laporta, Paolo Laporta, Stefano Longhi, Stefano Longhi, Gino Sorbello, Gino Sorbello, Stefano Taccheo, Stefano Taccheo, Cesare Svelto, Cesare Svelto, } "Erbium-ytterbium miniaturized laser devices for optical communications", Proc. SPIE 3622, Rare-Earth-Doped Materials and Devices III, (1 April 1999); doi: 10.1117/12.344495; https://doi.org/10.1117/12.344495


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