Nonlinear effects are invoked with the inclusion of a dispersion shifted fiber in the cavity of an actively mode-locked erbium-doped fiber ring laser. The spectrally broadened output is analyzed both in the time and the spectral domains for different lengths of this specialty fiber. A maximum spectral width of 52 nm is achieved at a pump power of 180 mW under optimized conditions in this configuration. © 2009 Optical Society of America.

Deepa Venkitesh

Department of Electrical Engineering

Fibers

Locks (fasteners)

Ring lasers

Dispersion shifted fibers

Erbium doped fiber ring lasers

Fiber-ring lasers

Nonlinear effect

Optimized conditions

Specialty fiber

Spectral domains

Spectral widths

Mode-locked fiber lasers

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Broadband output from an actively mode-locked fiber ring laser.

Applied Optics

The spectral width of the continuous wave broadband generated in an erbium doped fiber ring laser containing a dispersion shifted fiber (DSF) in a filterless cavity is found to be governed by the nature of the gain spectrum of the doped fiber, in addition to the nonlinear effects. This dependence is studied experimentally with different lengths of the doped fiber and the DSF. Spectral broadening is demonstrated in the conventional (C) and long wavelength (L) bands using pump powers less than 200 mW, with an appropriate choice of cavity parameters. The generated broadband is demultiplexed in the C -band to prove its utility in optical communication systems. © 2008 American Institute of Physics.

Journal of Applied Physics

Spectral characteristics of continuous wave broadband from a fiber laser with a low dispersion fiber in the cavity

A cost-effective and rugged actively mode-locked erbium-doped fiber laser operated at GHz repetition rate is demonstrated with the use of a Gunn oscillator as the RF source for driving the optical modulator. The high power from the Gunn oscillator eliminates the need of an RF driver. The output of the laser in the time domain is processed numerically to predict its modal characteristics in the spectral domain. Experimental results regarding the evaluation of the Gunn oscillator for its suitability in active mode-locking, tunable operation of the laser in the C-band using a band pass filter as well as the results on the stability of the laser output in the time and frequency domain are presented. © 2008 Wiley Periodicals, Inc.

Microwave and Optical Technology Letters

Performance evaluation of Gunn oscillators for active mode-locking of erbium doped fiber ring lasers

IEEE Photonics Technology Letters

Multiwavelength pulse generation using an actively mode-locked erbium-doped fiber ring laser based on distributed dispersion cavity

Optics Express

Four-wave mixing assisted self-stable 4×10 GHz actively mode-locked Erbium fiber ring laser

Dual-wavelength 10-GHz actively mode-locked erbium fiber laser incorporating highly nonlinear fibers

Broadband output from an actively mode-locked fiber ring laser

Journal	Data powered by TypesetApplied Optics
Publisher	Data powered by TypesetOSA - The Optical Society
ISSN	1559128X
Impact Factor	1.230
Open Access	No
Citation Style	unsrt
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