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We propose and experimentally demonstrate the first design of a fiber-optics programmable base/sub-harmonic optical clock recovery circuit, involving a phase modulator and linear dispersion, in which the rate division factor can be electrically reconfigurable through the modulation driving waveform.

We introduce a new design for Talbot-based passive amplifiers, involving temporal phase modulation and dispersion, in which the gain factor can be electrically reconfigurable. In particular, we show gain factors from m = 2 to 30 using a fixed dispersive line (FBG).

We show experimentally undistorted, intensity amplification of optical pulse waveforms with gain from 2 to ~20 without using active gain by recycling energy already stored in the input repetitive signal.

I generate 3.6 ps 10-GHz pulses at 1877 nm in an all-fiber package without mode-locking. To the best of my knowledge, this shows the highest repetition rate for all-fiber ultrafast pulse generation near 2.0 μm.

A programmable, ultrafast optical delay line with a robust all-fiber configuration is demonstrated. A record scanning rate of 0.5 GHz with a delay range of 19 ps is achieved without any mechanical motion. In addition, we will discuss the challenges and future improvements.