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Proceedings Paper

Erbium-ytterbium miniaturized laser devices for optical communications
Author(s): Paolo Laporta; Stefano Longhi; Gino Sorbello; Stefano Taccheo; Cesare Svelto
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Paper Abstract

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.

Paper Details

Date Published: 1 April 1999
PDF: 10 pages
Proc. SPIE 3622, Rare-Earth-Doped Materials and Devices III, (1 April 1999); doi: 10.1117/12.344495
Show Author Affiliations
Paolo Laporta, INFM and Politecnico di Milano (Italy)
Stefano Longhi, INFM and Politecnico di Milano (Italy)
Gino Sorbello, INFM and Politecnico di Milano (Italy)
Stefano Taccheo, INFM and Politecnico di Milano (Italy)
Cesare Svelto, Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 3622:
Rare-Earth-Doped Materials and Devices III
Shibin Jiang; Seppo Honkanen, Editor(s)

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