Monolithically Integratable Colliding Pulse Modelocked Laser Source for O-CDMA Photonic Chip Development

Abstract

We demonstrate modelocking of a colliding-pulse mode-locked laser formed by 3-μm-deep etched-mirrors on an InP platform for integration with passive waveguide components. Timing jitter of 243 fs and pulse width of 10 ps were measured.

Super-Long Cavity, Monolithically Integrated 1-GHz Hybrid Mode-Locked InP Laser for All-Optical Sampling

“…This is realized by fabricating a 1-D air slot which can achieve ~70% reflectivity. The DEM is fabricated by using a focused ion beam and an inductively coupled plasma reactive ion etch (ICP-RIE) machine [6]. Fig.…”

16-channel × 100-GHz Monolithically Integrated O-CDMA Transmitter with SPECTS Encoder and seven 10-GHz Mode-Locked Lasers

“…Succesful integration requires combing the CPM laser cavity on the same substrate as the passive components. Separately in [5] we demonstrated hybrid modelocking of a 10 GHz CPM laser formed by deeply etched mirrors and in [3] we demonstrated a 16-channel InP SPECTS O-CDMA encoder. The focus of this summary is integration of the novel CPM laser formed using 6 m deeply-etched mirrors (DEM), which was demonstrated as an isolated component in [5], with the SPECTS-OCDMA spectral-phase encoding operation and nonlinear-thresholder time-gating operation.…”

“…Finally, the facet was made using the Ga beam at 30kV and 1nA was used to make the strip. Detailed analysis of the reflectivity of the DEM can be found in [5]. Fig.3 (a) shows typical modelocked pulses from the CPM under passive modelocking measured with a digital communication analyzer (DCA) on the injection-locking side.…”

A 40-GHz Colliding Pulse Mode-Locked Semiconductor Laser

“…The other is to use the active-passive integration technology, [12] where passive sections are introduced to obtain the same mode-locking frequency with minimum length of gain section. Moreover, further integration with other passive waveguide components such as arrayed waveguide grating could be achieved [18] to realize complex functionalities.…”