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Tunable dispersion slope compensator using a chirped fiber Bragg grating tuned by a fan-shaped thin metallic heat channel

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4 Author(s)
Jaejoong Kwon ; Sch. of Electr. Eng., Seoul Nat. Univ., South Korea ; Sungchul Kim ; Sookyoung Roh ; Byoungho Lee

An electrically tunable dispersion slope compensator using a chirped fiber Bragg grating tuned by quadratic temperature distribution is demonstrated. A fan-shaped thin metallic heat channel was used to generate a quadratic temperature gradient along the grating. By controlling the temperature of inner and outer boundaries of the heat channel, we achieved a dispersion slope from -60.82-65.89 ps/nm2 for 1.2-nm bandwidth. The dispersion slope compensation in 160-Gb/s return-to-zero transmission is demonstrated by simulation.

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 1 )