Injection locked multi-section gain-coupled dual mode DFB laser for terahertz generation

Dual-wavelength high-power diode laser system based on an external-cavity tapered amplifier with tunable frequency difference

“…Different techniques have been developed to achieve dual-wavelength operation of a diode laser system, and they mainly can be classified into two categories: (1) Monolithic dual-wavelength diode lasers [6][7][8][9][10], and (2) diode laser systems based on different external-cavity feedback techniques [11][12][13][14][15][16][17]. The monolithic dual-wavelength diode lasers show stable dual-wavelength operation, but the frequency difference of the two wavelengths is not tunable or the tuning range is limited, and the output power from the monolithic dual-wavelength diode lasers is normally less than 500 mW [8].…”

All-optical clock recovery using a ridge width varied two-section partly gain-coupled DFB self-pulsation laser

“…In recent years, many kinds of all-optical clock recoveries have been studied, including passively mode-locked lasers which mainly contained the DBR configurations [1] and the Fabry-Perot configurations [2][3][4], injecting mode-locked lasers (IMLL) [5,6] and multi-section self-pulsation lasers (SPL) [7][8][9][10]. Compared with other methods, the use of multi-section self-pulsation DFB lasers is more promising applicants for all-optical Re-timing, due to their merits including compact sizes, easy control by DC injection current, wide tuning range and suitability to be used in the future optical communications with ultrahigh-speed [10] even in T-Hz range [11]. Up to now, all-optical clock recoveries have been successfully demonstrated by using both the index coupled [7,8] and gain-coupled [9][10][11] multi-section self-pulsation DFB laser.…”

“…Compared with other methods, the use of multi-section self-pulsation DFB lasers is more promising applicants for all-optical Re-timing, due to their merits including compact sizes, easy control by DC injection current, wide tuning range and suitability to be used in the future optical communications with ultrahigh-speed [10] even in T-Hz range [11]. Up to now, all-optical clock recoveries have been successfully demonstrated by using both the index coupled [7,8] and gain-coupled [9][10][11] multi-section self-pulsation DFB laser.…”

All-optical noninvasive control of semiconductor lasers

“…10 Semiconductor lasers in optical communication systems operate at much higher frequencies in the GHz range and THz are in view. [11][12][13] Chaos plays also an increasing role. It is either exploited 14 or it has to be avoided.…”