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High-speed (121/25 ps rise/fall time) and low-switching energy (7.1 and 3.4 fJ) all-optical flip-flop operation of single-wavelength high-mesa asymmetric active-MMI bi-stable laser diodes is demonstrated for the first time using 25 ps long switching pulses.
We report on a fiber-stabilized agile laser with ultra-low frequency noise. The frequency noise power spectral density (PSD) is comparable to the one of an ultra-stable cavity stabilized laser at Fourier frequencies higher than 30 Hz. When it is chirped at a constant rate of ~ 40 MHz/s, the max non-linearity frequency error is about 50 Hz peak to peak over more than 600 MHz tuning range. When the...
Novel active MMI bi-stable laser diodes are proposed and demonstrated. Using partly saturable-absorber configuration in active MMI, extremely wide hysteresis window of 94mA was achieved with 30fJ optical switching energy in 335??m total device length.
Very low frequency noise lasers are important tools for many applications such as high-resolution spectroscopy, optical atomic clock local oscillator, interferometric sensor (including gravitational waves detection), and coherent optical communications systems. Laser linewidth is usually reduced by locking to an ultra-stable optical cavity, using the Pound-Drever-Hall method. It led to fractional...
A novel MMI-based bi-stable laser is proposed for realizing compact size. Relatively low operation current of 100 mA (8 mA hysteresis), and high ON/OFF optical power-ratio of 15 dB were successfully achieved (@L=550 mum).
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