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概况光无源器件(包括光纤光缆连接器、光耦合器、光开关、光衰减器、光复用器/解复用器、光非互易器件等),是纤维光学技术的基础元件之一。它们主要用于光纤与光纤或光纤与其他器件的光学连接、光功率分配、光信道切换、光波分复用、双向传输以及光信息的反馈和隔离等。十多年来,由于光纤技术的迅速发展,国外对光无源器件的需要量逐年增加。表1是1980年～1982年间日本对光无源器件的需要量和年平均增长率。另外,据日本光产业技术振兴协会对美、日、英、法、西德和加拿大等六个国家进行的调查,1983年六国合计的光纤(缆)连接器总需要量为88.4万套,其中美国59万套;日本17万套。而六国对光分路器/合路器、光波分复用器/解复用器、光开关、光衰减器和光隔离器等器件的总需要量为3.38万套,其中美国
Overview Optical passive devices (including fiber optic cable connectors, optical couplers, optical switches, optical attenuators, optical multiplexer / demultiplexer, optical non-reciprocal devices, etc.), is one of the basic components of fiber optic technology. They are mainly used for the optical connection between optical fiber and optical fiber or optical fiber and other devices, optical power distribution, optical channel switching, optical wavelength division multiplexing, bidirectional transmission and optical information feedback and isolation. More than a decade, due to the rapid development of optical fiber technology, the demand for optical passive components abroad has been increasing year by year. Table 1 is from 1980 to 1982 Japan’s demand for passive devices and the average annual growth rate of light. In addition, according to a survey of six countries including the United States, Japan, Britain, France, West Germany and Canada, the total demand of optical fiber (cable) connectors in the six countries in 1983 totaled 888,000 sets, Of which 590,000 are in the United States and 170,000 in Japan. The total demand for optical splitters / combiners, optical wavelength division multiplexers / demultiplexers, optical switches, optical attenuators and optical isolators in the six countries was 33,800 units, of which the United States