5 June 2007 The operating characteristics of an optical near-field generator fabricated on laser diodes
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Abstract
The operating characteristics of a novel optical near-field generator are described in detail. The generator was fabricated by forming a random metal-dielectric film composed of silver paste and spherical fused silica on the facet of a laser diode. The relationship between the current injected to the laser diode and the intensity of the optical near field is similar to that between the injected current and optical output power emitted from the opposite facet having no metal-dielectric film, although the magnitude of the optical intensity is very different. The threshold current and kink-points in the current-optical intensity relation show no difference in the both relationships. Lasing spectra observed in propagating light scattered from the optical near field corresponds to those of light emitted from the opposite facet. The direct current (DC) characteristics of the optical near field are similar to those of the propagating light emitted from the laser diode, and the linear relationship is maintained between DC characteristics of the optical near field and of the propagating light. The modulation characteristics of the optical near-field coincide with those of laser diodes because the intensity of the optical near field linearly responds to the magnitude of the injected current of the laser diode. These results confirm that the optical near-field generator is a practical optical source and will be important for future photonic devices such as OEICs.
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Mitsuo Fukuda, Mitsuo Fukuda, Yusuke Yamasaki, Yusuke Yamasaki, Asami Oguma, Asami Oguma, Atsushi Utsumi, Atsushi Utsumi, Norihiro Oota, Norihiro Oota, } "The operating characteristics of an optical near-field generator fabricated on laser diodes", Proc. SPIE 6593, Photonic Materials, Devices, and Applications II, 65932H (5 June 2007); doi: 10.1117/12.720819; https://doi.org/10.1117/12.720819
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