Design of a transmitting-receiving isolation optical system
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摘要: 为了实现高隔离度的收发隔离，采用一种偏振收发隔离光学系统，利用琼斯矩阵进行了理论分析，验证了偏振隔离在收发同轴光学系统中的可行性。采取空间隔离来抑制回波进入接收系统，研究了模拟系统中偏振分束镜前表面楔角大小对收发隔离度的影响。结果表明，在达到一定楔角时，可取得100dB收发隔离度。这一结果对收发同轴光学系统的设计具有一定指导意义。Abstract: In order to achieve high-degree isolation in a transceiver system, an isolation optical system was put forward based on polarization and analyzed by means of Jones matrix. The feasibility of polarization isolation in a coaxial optical transceiver was verified. The space separation was used to suppress the echo into the receiving system. The influence of the wedge angle of polarization beam splitter on transmitting-receiving isolation was studied. The results show that, the transmitting-receiving isolation of 100dB is achieved with a certain wedge angle. The results will be of guiding significance for the design of transmitting-receiving coaxial optical systems.
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