Title :
Measurements of thermal frequency chirp in directly modulated DFB lasers and thermal transient induced frequency drift during fast tuning in GCSR lasers using frequency discrimination technique
Author :
Buimovich, Efraim ; Sadot, Dan
Author_Institution :
Electr. & Comput. Eng. Dept., Ben Gurion Univ., Beer-Sheva, Israel
Abstract :
Frequency deviations in a regime of high rate current fluctuations in distributed feedback (DFB) and grating coupler sample reflector (GCSR) lasers are measured using novel statistical frequency discrimination technique. Thermal time constants of the order of nanoseconds are observed in both.
Keywords :
chirp modulation; diffraction gratings; distributed feedback lasers; electro-optical modulation; laser tuning; optical couplers; optical testing; semiconductor device testing; semiconductor lasers; statistical analysis; GCSR lasers; directly modulated DFB lasers; distributed feedback laser; fast tuning; frequency deviations; frequency discrimination technique; grating coupled sample reflector laser; high rate current fluctuations; thermal frequency chirp; thermal time constants; thermal transient induced frequency drift; Bit rate; Chirp modulation; Crosstalk; Current measurement; Frequency measurement; Frequency modulation; Laser tuning; Signal analysis; Time measurement; Wavelength measurement;
Conference_Titel :
Lasers and Electro-Optics Society, 2003. LEOS 2003. The 16th Annual Meeting of the IEEE
Print_ISBN :
0-7803-7888-1
DOI :
10.1109/LEOS.2003.1251708
