Optical FIBER deployment in the access network, which bridges the transport network and subscribers, hinges on the availability of cost-effective wavelength-division-multiplexing (WDM) light sources. Schematic of the multiwavelength mode-locked laser with subsequent optical amplification and OTDM multiplexing. L: lens, M: mirror, E: etalon, G: grating, S: slit, F: gain flattener, P: pellicle beam splitter, FI: Faraday isolator.
Abstract:
A gain-flattened multiwavelength mode-locked semiconductor laser generates 168 discrete wavelength channels at 6 GHz. Intracavity etalon filtering delineates the 0.12-nm-...Show MoreMetadata
Abstract:
A gain-flattened multiwavelength mode-locked semiconductor laser generates 168 discrete wavelength channels at 6 GHz. Intracavity etalon filtering delineates the 0.12-nm-spaced channels while spatial filtering inside a spectrometer broadens the laser spectrum to 20 nm. Mode locking produces 85-ps pulses in each channel at 750 MHz. The pulse-repetition rate is multiplied to 6 GHz per channel via optical time-division multiplexing to yield an aggregate pulse rate of 1 THz.
Published in: IEEE Photonics Technology Letters ( Volume: 15, Issue: 4, April 2003)