We present a 1 × 4 Y-branch digital optical switch in which S-bend variable optical attenuators are integrated. The S-bend waveguides, which are always introduced to connect the switch and the standard fiber arra...We present a 1 × 4 Y-branch digital optical switch in which S-bend variable optical attenuators are integrated. The S-bend waveguides, which are always introduced to connect the switch and the standard fiber array, are made use of and designed as variable optical attenuators. A compact device with low crosstalk and larger branching-angle is obtained. The device is fabricated on the thermo-optic polymer materials,and the performance of the device is measured. With an applied driving power of less than 200mW, the device has a low crosstalk of less than - 35dB at a wavelength of 1.55 μm.展开更多
We demonstrate the routing operation of optical packets by an optical packet switch consisting of an optical digital-to-analog conversion-type header processor, a wavelength converter using an electrically-tunable las...We demonstrate the routing operation of optical packets by an optical packet switch consisting of an optical digital-to-analog conversion-type header processor, a wavelength converter using an electrically-tunable laser, and an arrayed-waveguide grating router. A packet transfer by two-bit optical header was achieved for the first time.展开更多
随着经济的持续发展,通信工程领域取得巨大突破,各地区用户对信息传输的质量、效率提出更高的要求,传输技术的推广与应用也受到广泛关注。现阶段,通信工程中所应用的传输技术类型主要有同步数字体系(Synchronous Digital Hierarchy,SDH...随着经济的持续发展,通信工程领域取得巨大突破,各地区用户对信息传输的质量、效率提出更高的要求,传输技术的推广与应用也受到广泛关注。现阶段,通信工程中所应用的传输技术类型主要有同步数字体系(Synchronous Digital Hierarchy,SDH)、波分复用(Wavelength Division Multiplexing,WDM)以及自动交换光网络(Automatic Switched Optical Network,ASON)3种。传输技术在通信工程中的有效应用可以极大地提升信号传输的安全性和可靠性,从而发挥出自身的价值。针对传输技术在通信工程中的应用展开深入探讨,介绍了传输技术的类型、特点及具体应用,以供参考。展开更多
文摘We present a 1 × 4 Y-branch digital optical switch in which S-bend variable optical attenuators are integrated. The S-bend waveguides, which are always introduced to connect the switch and the standard fiber array, are made use of and designed as variable optical attenuators. A compact device with low crosstalk and larger branching-angle is obtained. The device is fabricated on the thermo-optic polymer materials,and the performance of the device is measured. With an applied driving power of less than 200mW, the device has a low crosstalk of less than - 35dB at a wavelength of 1.55 μm.
文摘We demonstrate the routing operation of optical packets by an optical packet switch consisting of an optical digital-to-analog conversion-type header processor, a wavelength converter using an electrically-tunable laser, and an arrayed-waveguide grating router. A packet transfer by two-bit optical header was achieved for the first time.
