GaInAsP/InP Directional Coupler Loaded with Grating for Optically-Controlled Switching

Katsumi NAKATSUHARA  Takashi SHIRADO  Seok-Hwan JEONG  Tetsuya MIZUMOTO  Mitsuru TAKENAKA  Yoshiaki NAKANO  

IEICE TRANSACTIONS on Electronics   Vol.E85-C   No.4   pp.1039-1045
Publication Date: 2002/04/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Recent Progress of Integrated Photonic Devices)
Category: New Devices
integrated optics,  optical waveguide,  Bragg grating,  nonlinear optics,  photonic switch,  

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All-optical switching operating at 1.55 µm band in fabricated GaInAsP directional couplers loaded with grating are reported experimentally. These switching operations were realized in spatially separated output ports. The devices are suitable for optical integrated circuits and would operate as all-optical routing switches in practical power level by use of optical Kerr effect and Bragg grating. Using the optical bistability in the device, latching operation for output signal can be realized in spatially separated output ports and the outputs from each port are complementary. Two all-optical gate operations, which are optical inverting operation and optically controlled switching in spatially separated output ports, are also demonstrated, where the signal and control lights have different wavelength.