摘要:This paper presents the GP/MF 565 HS—Ⅱ model multiplex terminal equipment for optical eable network and GZ 565 HS—Ⅱ model optical repeater equipment developped by Wuhan Research Institute of Posts and Telecommunication, and the Shanghai—Wuxi experimental section for 565 Mbit/s optical cable communication system based on these equipment.
关键词:optical cable communication system;field trial
摘要:The paper briefly describes the present status of laboratory research on Prdoped fluoride glass fiber amplifier used for optical fiber communications at 1.3 pm wavelength. Based on the principles of optical fiber amplifier, the paper explains how to select the doped ions and glass composition of fiber core for 1.3 μm amplifio tion. Then,the performance measurement results obtained in the laboratories on small signal amplifier,power amplifier, and pump source are described. It is predicted that such 1.3 μm amplifier would be successfully made in the near future to serve on the optical fiber lines of digital communication network as well as cable television network.
关键词:Optical fiber amplifier;optical fiber digital communication;optcial fiber cable television
摘要:This paper gives a newly developed data and clock recovery module used in high speed optical fiber communication systems, and describes its designing methods,operating principles and technical features. At present, the volume of the module used in 565 Mbit/s or 622Mbit/s is 50×50×6 (mm3), and its power dissipation is about 1.8W. It is estimated that a data and clock recovery module with a higher operating rate is available only if some devices are changed.
关键词:optical fiber communication;data and clock recovery;module
摘要:10 Channel FM/FDM—IM video signal optica fiber system was designed in this paper and the problem concerned with the system was discussed in detail. The system is compatible with 450 MHz CATV cable transmission systems.
关键词:CATV signal transmission;optical fiber transmission system;Multichannel Television Transmission
摘要:This paper persents a measuring method of optical fiber extra length in various structure cables to ensure either good repeatability or enactness. The method has practical useful meaning.
关键词:optical fiber extra length;optical fiber cable;measuring method
摘要:This paper presents the basic theory of quantum—well laser diodes,the technology and equipments for growth of long wavelength optoelectronic devices.
摘要:This paper presents a new model for semiconductor laser circuit which is established by use of the models for controlled components and devices in the common circuit analysis software SPICE. The model can be used to simulate the nonlinearity,instantaneous response, small—signal frequency response,impedance characteristics of laser, as well as the relation between transmitted optical power and injected circuit. With the model, the laser and relevant circuits can be analysed all through SPICE. The computer simulation results a-gree with the reported theoretical and experimental values.
摘要:In this paper,the photodetection properties of LD are studied theoretically and experimentally. There are many potential applications for photodetection of LD, as an example, finding faults along a fiber is reported.
关键词:the photedetection properties fo LD;finding faults along a fiber