Theoretical model of the hybrid soliton pulse source

Extremely Increasing the Mode-Locking Range of Hybrid Soliton Pulse Source

“…These results show that the broad operating range of this source, with pulsewidths of 40-80 ps and timebandwidth products of 0.3-0.5 over rf frequencies from 2 -3.3 GHz. Mode-locking range was found 2.1-2.95 GHz in [3] although time-bandwidth product changes between 0.3-0.7. At the center of the frequency range where the device is designed to operate, time-bandwidth products close to 0.4 are achieved for all bias conditions, with pulsewidths from 40-80 ps.…”

“…The peak power rises as both the dc and rf drive levels are increased, as expected. Obtained pulses are shorter than that of linearly chirped Gaussian apodized FBG [3]. The calculated results for time-bandwidth product versus rf mode-locking frequency are shown in Fig.…”

“…The fundamental frequency is chosen as 2.5 GHz. AR coating reflectivity 0.01, HR coating field reflectivity 0.9, and gain compression factor 2x10 -17 cm 3 . The other MQW laser diode parameters can be found [4][5][6].…”

“…An interesting feature of these devices is the extremely wide operating frequency range, which can be enhanced by using chirped gratings, as reported in [3]. In [3], calculated and measured results showed that transform-limited pulses are generated over a frequency range of 850 MHz using linearly chirped Gaussian apodized fiber Bragg grating (FBG). However, in this paper, it is shown that proper mode-locking range is widened up to 1.3 GHz utilizing linearly chirped raised-cosine flat top FBG [4].…”

Relative intensity noise in mode-locked fiber grating external cavity lasers

“…The TBP is calculated as the product between the pulse and optical bandwidth and varies 0.3 to 0.5 in the locking range in this work [2]. noise.…”