Novel complex gratings with third-order group-delay variations for tunable pure dispersion slope compensation.

We present a novel tunable dispersion compensator that can provide pure slope compensation. The approach uses two specially designed complex fiber Bragg gratings (FBGs) with reversely varied third-order group delay curves to generate the dispersion slope. The slope can be changed by adjusting the relative wavelength positions of the two FBGs. Several design examples of such complex gratings are presented and discussed. Experimentally, we achieve a dispersion slope tuning range of +/- 650 ps/nm(2) with > 0.9 nm usable bandwidth.

[1]  K. Kikuchi,et al.  Nonlinearly strain-chirped fiber Bragg grating with an adjustable dispersion slope , 2002, IEEE Photonics Technology Letters.

[2]  Byoungho Lee,et al.  Tunable dispersion slope compensator using a chirped fiber Bragg grating tuned by a fan-shaped thin metallic heat channel , 2006 .

[3]  M. Sumetsky,et al.  160-Gb/s tunable dispersion slope compensator using a chirped fiber Bragg grating and a quadratic heater , 2005, IEEE Photonics Technology Letters.

[4]  J.J. Pan,et al.  Sampled fiber grating based-dispersion slope compensator , 1999, IEEE Photonics Technology Letters.

[5]  Dispersion-order selectable chromatic dispersion compensator using strain-profile modification blocks , 2003, IEEE Photonics Technology Letters.

[6]  Ian Bennion,et al.  Tailored Gires-Tournois etalons as tunable dispersion slope compensators. , 2004, Optics letters.

[7]  G. Randall,et al.  Tunable dispersion and dispersion slope compensators for 10 Gb/s using all-pass multicavity etalons , 2003, IEEE Photonics Technology Letters.

[8]  T. Miyazaki,et al.  Tunable dispersion slope compensator with a chirped fiber grating and a divided thin-film heater for 160-Gb/s RZ transmissions , 2004, IEEE Photonics Technology Letters.

[9]  Morten Ibsen,et al.  Fiber Bragg gratings for pure dispersion-slope compensation. , 2003, Optics letters.

[10]  J. Skaar,et al.  On the synthesis of fiber Bragg gratings by layer peeling , 2001 .

[11]  M.A. Cappuzzo,et al.  Integrated all-pass filters for tunable dispersion and dispersion slope compensation , 1999, IEEE Photonics Technology Letters.

[12]  Sunil K. Khijwania,et al.  A novel tunable dispersion slope compensator based on nonlinearly thermally chirped fiber Bragg grating , 2003 .

[13]  Dispersion-order selectable chromatic dispersion compensator using strain-profile modification blocks , 2003 .

[14]  Joshua E. Rothenberg,et al.  Tunable dispersion slope compensation for 40-Gb/s WDM systems using broadband nonchannelized third-order chirped fiber Bragg gratings , 2002 .

[15]  Byoungho Lee,et al.  Tunable dispersion slope compensator using a chirped fiber Bragg grating tuned by a fan-shaped thin metallic heat channel , 2006, IEEE Photonics Technology Letters.