Tunable and variable clock generation up to 1.2 THz by filtering an actively mode-locked 42.5 GHz Quantum Dash Fabry-Perot laser with a reconfigurable filter

Abstract

technical session OWU " Coherent Systems and Tuneable Devices "International audienc

Up to 427 GHz All Optical Frequency Down-Conversion Clock Recovery Based on Quantum-Dash Fabry–Perot Mode-Locked Laser

“…These results confirm the ability of the QD-MLLD to be used as a high repetition rate source for telecommunication applications. The repetition rate of this source is only limited by it's spectrum bandwith; 1.2 THz optical source was shown in our previous work [26].…”

“…In an active mode locking regime, the QD-MLLD has been investigated as a powerful device for different applications in optical telecommunications, as an all optical clock recovery for 40 Gbit/s [21], [22] and a clock recovery at 40 Gbit/s for RZ, NRZ and DPSK signals [23], which indicates that this kind of technique can be tested for advanced modulation formats. As far as high bit rate transmissions are concerned, different configurations can be reported: as a 160 Gbit/s source in a OTDM configuration [24]; as a unique source to generate different wavelength-division-multiplexing channels for access network applications [25]; and as a high repetition rate pulsed signal generator up to 170.8 GHz and higher by a simple spectral filtering method, taking advantage of the wide spectrum of the laser [26].…”

Multi Data-Rate Synchronization of 40 GHz Mode-Locked Quantum-Dash Lasers Diodes

“…Quantum-dash mode-locked (QDash-ML) Fabry-Pérot (FP) laser diodes (LD) have attracted significant interest in optical time-and wavelength-division multiplexing systems due to a variety of their applications. Among the more important are sub-picosecond pulse generation at repetition rates from 40 GHz [1] to 346 GHz [2], frequency multiplication at 270 GHz [3], multi-channel transmission at 10 GHz [4], wavelength tunable transmission at 170 Gb/s [5], clock-generation up to 1.2 THz [6], and clock-recovery at 40 Gb/s [7]. Regarding the latest mentioned application, the performance of the recovered clock has been assessed either by re-modulating it with the original data-stream and implementing bit-error-rate measurements [7][8], or by analyzing the linewidth of the RF beat-tone signal and retrieving the root mean square timing jitter [9].…”