Title :
Design of a compact photonic crystal pulse position modulator
Author :
Eshaghi, Armaghan ; Mirsalehi, Mir M. ; Attari, Amir R.
Author_Institution :
Electr. Eng. Dept., Ferdowsi Univ. of Mashhad, Mashhad
Abstract :
In this paper, we introduced a novel photonic crystal structure to perform pulse position modulation. The proposed device, which can be used in optical integrated circuits, consists of a delay line and an all-optical switch. Reducing the group velocity in the PC waveguide, results in further reduction of the device size. The transmission loss was lowered by modifying the sharp bends in the structure. The all-optical switch, which is formed by a nonlinear directional coupler, controls the modulation process and has an extinction ratio more than 25 dB. The frequency of the control signal is chosen to decrease the required power.
Keywords :
integrated optics; nonlinear optics; optical communication equipment; optical delay lines; optical design techniques; optical directional couplers; optical modulation; optical switches; photonic crystals; pulse position modulation; all-optical switch; delay line; extinction ratio; group velocity reduction; nonlinear directional coupler; optical integrated circuits; photonic crystal structure; pulse position modulator design; transmission loss; Integrated optics; Nonlinear optical devices; Nonlinear optics; Optical devices; Optical modulation; Optical pulses; Optical switches; Optical waveguides; Photonic crystals; Pulse modulation;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958302
