SEMICONDUCTOR PHOTONICS AND TECHNOLOGY(SPAT) is governed by the Ministry of Electronical lndus-try(MEI),sponsored by Chongqing Optoelectronics Research Institute(COERI),edited and published quarterly by Edito-rial Office of SPAT,CHN．Original contributions are welcomed which relate advances or sonte-of-the-art capabilities in thetheory,design,fabrication technology, application,performance and reliability of:——Photonic devices:including semi-conductor laser diodes,light emitting diodes,photodetectors,optical modulators and couplers,sensors,charge coupled de-@1 SEMICONDUCTOR PHOTONICS AND TECHNOLOGY (SPAT) is governed by the Ministry of Electronical lndus-try (MEI), sponsored by Chongqing Optoelectronics Research Institute (COERI), edited and published quarterly by Edito-rial Office of SPAT, CHN. Original contributions are welcomed to sonte-of-the-art capabilities in the theory, design, fabrication technology, application, performance and reliability of: - Photonic devices: including semi-conductor laser diodes, light emitting diodes, photodetectors, optical modulators and couplers, sensors, charge coupled de- @ 1