Optical pulse compression and amplitude noise reduction using a non-linear optical loop mirror including a distributed Gires–Tournois etalon

We propose and analyse numerically a novel dispersion-imbalanced non-linear optical loop mirror (NOLM) scheme allowing simultaneous compression and amplitude noise reduction of chirped ultrashort-pulsed signals. An all-fibre distributed Gires–Tournois etalon (DGTE) made of two uniform fibre Bragg gr...

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Bibliographic Details
Published inOptics and laser technology Vol. 42; no. 7; pp. 1103 - 1111
Main Authors González-García, A., Pottiez, O., Grajales-Coutiño, R., Ibarra-Escamilla, B., Kuzin, E.A.
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.10.2010
Elsevier
Subjects
Exact sciences and technology
Fiber optics
Fibre Bragg grating
Fundamental areas of phenomenology (including applications)
Gires–Tournois interferometer
Gratings
Non-linear optical loop mirror
Optical elements, devices, and systems
Optics
Other fiber-optical devices
Physics
Fibre Bragg grating
Gires–Tournois interferometer
Non-linear optical loop mirror
Bragg gratings
Noise reduction
Diffraction gratings
Optical systems
Gires-Tournois interferometer
Optical pulse
Mirrors
Grating in fiber
Signal regeneration
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Summary:We propose and analyse numerically a novel dispersion-imbalanced non-linear optical loop mirror (NOLM) scheme allowing simultaneous compression and amplitude noise reduction of chirped ultrashort-pulsed signals. An all-fibre distributed Gires–Tournois etalon (DGTE) made of two uniform fibre Bragg gratings is inserted asymmetrically in the loop, and is used both to dispersion imbalance the NOLM and to compress the pulses. The results show that the output pulses are accompanied by side lobes, which originate from the no-uniformity of the DGTE dispersion spectrum. We analyse the formation of these side lobes and show that, in the case of highly chirped input pulses, side lobes are strongly reduced by the NOLM architecture. In this case, the device operates well even when the signal optical spectrum extends over an entire free spectral range of the DGTE. We believe that this work will be useful for the design of all-optical regeneration schemes for highly chirped data streams in optical transmission systems.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2010.02.002