A Bragg-like chirped clad all-solid microstructured optical fiber with ultra-wide bandwidth for short pulse delivery and pulse reshaping

Somnath Ghosh (1) , R. K. Varshney (1) , Bishnu P. Pal (1) , Gérard Monnom (2)

1 Department of Physics [New Delhi]
2 LPMC - Laboratoire de physique de la matière condensée

Chirped cladding is proposed as a novel tailoring tool to simultaneously attain wider transmission window and reduced temporal dispersion in an all-solid Bragg-like microstructured optical fiber as compared to its perfectly periodic cladding counterpart. This design route for photonic bandgap microstructured fibers could be exploited as an additional degree of freedom for bandgap engineering. A suitably chirped clad fiber could be gainfully exploited to deliver femto-second pulse with ultra wide bandwidth. Further, generation of self-similar parabolic profile pulse is demonstrated by propagating an input Gaussian pulse through such a 2 meter long linearly tapered Bragg like fiber sample.

Mots clés: Microstructured fiber; Bandgap engineering; Short pulse delivery; Parabolic pulse generation

Domaines: Optique [physics.optics]

Somnath Ghosh, R. K. Varshney, Bishnu P. Pal, Gérard Monnom. A Bragg-like chirped clad all-solid microstructured optical fiber with ultra-wide bandwidth for short pulse delivery and pulse reshaping. Optical and Quantum Electronics, 2010, pp.Online first. ⟨10.1007/s11082-010-9417-8⟩. ⟨hal-00534452⟩