Comb Line Generation Using Gain Flattened Ring Mode Locked Laser
S. Ravi Teja1, L. Krishna Kanth2, G. Ravi Teja3, T.Ravi4
1S. Ravi Teja, E.C.E Department, Kl University, Vijayawada, India.
2L. Krishna Kanth, E.C.E Department, Kl University, Vijayawada, India.
3G. Ravi Teja, E.C.E Department, Kl University, Vijayawada, India.
4T.Ravi, E.C.E Department, Kl University, Vijayawada, India.
Manuscript received on November 22, 2012. | Revised Manuscript received on December 09, 2012. | Manuscript published on December 30, 2012. | PP: 190-192 | Volume-2, Issue-2, December 2012. | Retrieval Number: B0860112212 /2012©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: We briefly demonstrate combinational line generation from an integrated multiple quantum well in GaAs/InP passively mode-locked laser (MLL) with a gain flattening filter based on an mach-zehnder interferometer. The intracavity filter flattens the non-uniform gain profile of the semiconductor material providing a more uniform net cavity gain. The GFF MLL has a gain of -10dB comb span of 15nm (1.88THz), the widest spectral width yet demonstrated for an integrated qw MLL at 1.55(micro meters). The measured optical linewidth at the center of the comb is 29 MHz, the -20dB RF gain line width of 500 KHz, while the output spectrum is phase-locked to produce 900 fs pulses at a repetition rate of 30 GHz with 4.6 (pico second) integrated jitter from 100Hertz to 30 (MegaHz)
Keywords: Comb-line generation, Integrated optics, Mode-locked lasers, optical Communications, Photonics Integrated Circuits.