High frequency microwave signal generation using dual-wavelength emission of cascaded DFB fiber lasers with wavelength spacing tunability

[EN] A dual wavelength fiber laser source based on two cascaded phase-shifted fiber Bragg gratings is presented The gratings are written in an erbium-doped fiber each configuring the cavity of a distributed feedback fiber laser The spacing between lasing modes is controlled dynamically by the use of piezoelectric actuators A continuous tuning range of 5-724 pm of the wavelength difference which is equivalent to a photodetected 072-92 GHz range is obtained Efficient generation from the L to the W microwave and millimeter bands has been achieved by heterodyne photodetection of the dual-wavelength optical signal (C) 2010 Elsevier BV All rights reservedThis work has been financially supported by the European Commission under the FP7 EURO-FOS NoE (ICT-2007-2-224402) and the Spanish Ministerio de Educacion y Ciencia TEC2008-05490 and TEC2009-08078 projects The work of G E Villanueva and J Palaci was supported by the MEC-FPU and UPV-FPI programs The work of P Perez-Millan was supported by the Juan de la Cierva program JCI-2009-05805Villanueva Ibáñez, GE.; Palací López, J.; Cruz, JL.; Andrés, MV.; Martí Sendra, J.; Pérez Millán, P. (2010). High frequency microwave signal generation using dual-wavelength emission of cascaded DFB fiber lasers with wavelength spacing tunability. Optics Communications. 283(24):5165-5168. https://doi.org/10.1016/j.optcom.2010.07.077516551682832