There are four means for transmission, wireless, opticalwaveguide fibre, microwave relay and satellite transmission.
传输方式有地面无线、光纤、微波中继及卫星传输等。
2
Generally speaking, there are two types of optical fibers for Mid-infrared laser transmission. One is solid-core optical fiber and the other is hollow waveguide.
目前研究传输红外激光光纤一般分为两类：红外实芯光纤和红外空芯波导。
3
In this thesis, at first we will introduce the electromagnetic theory of optical planar waveguide, analyze the transmission characteristic of different modes and the connection loss of fiber.