OPE2000-39 / LQE2000-33 Photonic Integrated Circuits for WDM applications
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概要
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One of most exciting developments in the field of optical communication is the explosive growth of Wavelength Division Multiplex (WDM) systems. Systems with a transmission capacity of more than 100 Gigabit/s have become commercially available. Todays systems are developed for use in Point-to-point transmission, a next step will be the use of WDM in advanced network applications. WDM systems require devices with a greater complexity than systems operating at a single wavelength: multiwavelength transmitters and receivers for point-to-point transmission, add-drop multiplexers for coupling one wavelength into and out of a multiwavelength link or ring, and optical crossconnects for wavelength-selective connection of different links or networks. Most of these subsystems are presently assembled from discrete components which are coupled to each other with fibres. Photonic integration of these devices has the potential to reduce packaging cost by eliminating most of the interconnection fibres. At the same time it leads to a drastic reduction in volume of complex devices. The phased-array (de) multiplexer (PHASAR, AWG, or WGR) is a key component in WDM devices. Most devices required in advanced WDM systems can be realised using a combination of PHASARs, Semiconductor Optical Amplifiers(SOAs) and optical switches. InP-based technology is capable of integrating these three basic components and is thus suitable for realisation of a broad class of optical devices. Examples reported are WDM-receivers, WDM-transmitters, channel-selectors and WDM-switching devices such as Optical Add-Drop Multiplexers (OADM's) and Optical Cross-Connects (OXC's). Performance and fabrication costs of InP-based devices are still prohibitive for broad application, but they show steady improvement. The huge market for WDM lasers will accelerate the InP technology development and pave the way for integration processes which will provide compact and cost-effective solutions for many functions in WDM applications.
- 社団法人電子情報通信学会の論文
- 2000-06-30
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関連論文
- OPE2000-39 / LQE2000-33 Photonic Integrated Circuits for WDM applications
- OPE2000-39 / LQE2000-33 Photonic Integrated Circuits for WDM applications