Wide-band fanned-out supercontinuum source covering O-, E-, S-, C-, L- and U-bands

A wide-band supercontinuum source generated by mode-locked pulses injected into a Highly Non-Linear Fiber (HNLF) is proposed and demonstrated. A 49cm long Bismuth–Erbium Doped Fiber (Bi–EDF) pumped by two 1480nm laser diodes acts as the active gain medium for a ring fiber laser, from which mode-lock...

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Bibliographic Details
Published in:Optics and laser technology 2012-10, Vol.44 (7), p.2168-2174
Main Authors: Ahmad, H., Latif, A.A., Awang, N.A., Zulkifli, M.Z., Thambiratnam, K., Ghani, Z.A., Harun, S.W.
Format: Article
Language:English
Subjects:
Bi–EDF
Channels
Covering
Dispersions
Doped fibers
Gratings (spectra)
Laser diodes
Mode-locked fiber laser
Networks
Pulse width
Supercontinuum
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Summary:A wide-band supercontinuum source generated by mode-locked pulses injected into a Highly Non-Linear Fiber (HNLF) is proposed and demonstrated. A 49cm long Bismuth–Erbium Doped Fiber (Bi–EDF) pumped by two 1480nm laser diodes acts as the active gain medium for a ring fiber laser, from which mode-locked pulses are obtained using the Non-Polarization Rotation (NPR) technique. The mode-locked pulses are then injected into a 100m long HLNF with a dispersion of 0.15ps/nmkm at 1550nm to generate a supercontinuum spectrum spanning from 1340nm to more than 1680nm with a pulse width of 0.08ps and an average power of −17dBm. The supercontinuum spectrum is sliced using a 24 channel Arrayed Waveguide Grating (AWG) with a channel spacing of 100GHz to obtain a fanned-out laser output covering the O-, E-, S-, C-, L- and U-bands. The lasing wavelengths obtained have an average pulse width of 9ps with only minor fluctuations and a mode-locked repetition rate of 40MHz, and is sufficiently stable to be used in a variety of sensing and communication applications, most notably as cost-effective sources for Fiber-to-the-Home (FTTH) networks. ► A wide-band supercontinuum source using a 49cm long Bi–EDF and 100m long HNLF. ► Capable of generating a supercontinuum spectrum spanning from 1340nm to more than 1680nm. ► A fanned-out output of mode-locked pulses covering the O-, E-, S-, C-, L- and U-bands is obtained. ► The output has an average pulse width of 9ps with only slight variations between the 24 channels. ► The system has numerous uses in optical communications and sensor applications sensing functions.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2012.03.007