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All-Optical Switching Phenomenon in Polydiacetylene (12, 8) Based Nonlinear Directional Coupler
Akimasa KANEKO Takashi KUWABARA Tatsuo WADA Hiroyuki SASABE Keisuke SASAKI
IEICE TRANSACTIONS on Electronics
Publication Date: 1994/05/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Organic Functional Devices)
nonlinear directional coupler, optical Kerr effect, all-optical switching, polydiacetylene (12,8), mode-locked Ti: Sapphire laser,
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Optical Kerr effect were applied to all-optical switching devices in the form of nonlinear waveguide directional couplers. The nonlinear waveguide directional coupler consists of a quartz thin gap between two Corning 7059 guided layers on a pyrex substrate with ion-milled grating and organic thin film as a top layer. The vacuum-deposited polydiacetylene (12, 8) film was used as an organic nonlinear material. Power-dependent switching phenomenon in this asymmetrical nonlinear directional coupler was observed by 100 fs pulse duration of mode-locked Ti: Sapphire laser.