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A widely tunable optical filter using ladder-type structure

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5 Author(s)
Matsuo, S. ; NTT Photonics Labs., Kanagawa, Japan ; Yoshikuni, Y. ; Segawa, T. ; Ohiso, Y.
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A novel widely tunable optical filter with a ladder-type structure is proposed. The device decreases the electrode area, compared with a tunable filter using an arrayed waveguide grating filter. It is fabricated using the InGaAsP-InP material system, and current injection is employed to change the refractive index of the waveguide. The device exhibits a tuning range of 58 nm and a switching time of less than 10 ns.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 8 )

Date of Publication:

Aug. 2003

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