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我所研制成功140Mb/s数字彩电光纤传输系统及数字光通信机,大数值孔径光纤预制件、光耦合器、光衰减器、光开关和光纤带宽测试仪不久前,我所在电子工业部通信广播电视局主持下举行了两次科研成果鉴定会,分别对140Mb/s数字彩电光纤传输系统及数字光通信机两项成果和大数值孔径光纤预制件等五项成果进行了鉴定。今年3月20日鉴定通过的140Mb/s数字彩电光纤传输系统及数字光通信机,其无中继传输距离超过20公里,是目前国内最长的。系统中一根光纤可传输一路彩电、一路伴音复接三
I successfully developed 140Mb / s digital color TV optical fiber transmission system and digital optical communications, large numerical aperture optical fiber prefabricated, optocouplers, optical attenuators, optical switches and optical bandwidth tester. Not long ago, I Electronics Division Communications Broadcasting Under the auspices of the TV Bureau, two research results appraisal sessions were held, respectively identifying five achievements of 140Mb / s digital color television optical fiber transmission system, two digital optical communicators and a large numerical aperture optical fiber preform. March 20 this year, passed the appraisal of the 140Mb / s digital color TV optical fiber transmission systems and digital optical communications, the relayless transmission distance of more than 20 km, is currently the longest. A fiber optic cable in the system can transmit all the way to color TV, all the way sound multiplexed three