Title :
Thermal contribution to wavelength switching characteristics of widely tunable lasers
Author :
Mulvihill, G. ; Yu, Yonglin ; O´Duill, Sean ; O´Dowd, Ronan
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. Dublin, Ireland
Abstract :
Thermal effects on wavelength switching dynamics are investigated for a wideband laser. For frequency shift keying (FSK) applications it has been shown that the laser phase current must be switched every 30 ns or in other words modulated at over 35 MHz, to achieve full range frequency dither. Alternatively FSK as low as 5 MHz is possible with a 10% loss of frequency excursion. In this paper, thermal effects on the FSK modulation and wavelength switching dynamics are investigated for a grating-assisted co-directional coupler with sampled grating reflector (GCSR) laser with the phase section.
Keywords :
diffraction gratings; frequency shift keying; laser tuning; light reflection; optical directional couplers; optical modulation; optical switches; phase modulation; thermo-optical effects; wavelength division multiplexing; 30 ns; 35 MHz; FSK modulation; GCSR laser; frequency dither; frequency shift keying; grating-assisted co-directional coupler; laser phase current switching; sampled grating reflector; thermal effects; wavelength switching dynamics; wideband laser; widely tunable lasers; Frequency modulation; Frequency shift keying; Gratings; Laser tuning; Optical modulation; Optical tuning; Optical variables control; Phase modulation; Tunable circuits and devices; Wavelength measurement;
Conference_Titel :
Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE
Conference_Location :
Tucson, AZ, USA
Print_ISBN :
0-7803-7888-1
DOI :
10.1109/LEOS.2003.1252963
