A four-phase reflective coherent optical communication system
A coherent optical communication and reflective technology, which is applied in the field of optical communication systems, can solve problems such as the instability of optical phase-locked loops, and achieve the effect of strong confidentiality and convenient phase synchronization
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[0022] In this example,
[0023] Laser: 1550nm DFB Laser Diode, PM Output, up to 30mW;
[0024] Polarizing beam splitter: center wavelength 1550nm, withstand power 300mW, light type PM;
[0025] Polarization controller: center wavelength 1550nm, input optical power -20dBm to 20dBm;
[0026] Faraday rotating mirror: center wavelength 1550nm, rotation angle 45°, fiber B=250μm bare fiber;
[0027] Homodyne coherent reception: the rate is 100Gbps (high-order phase modulation can generally achieve a rate above 100G), and the differential amplification gain is 2500V / W.
[0028] The four-phase reflective coherent optical communication system obtained in the embodiment has been tested and shown, compared with the existing forward system, the BER curve is equivalent, and the longest transmission distance is about 2800km, indicating that the performance of the two is roughly the same; the reflection of the embodiment The BER comparison curves of the coherent optical system and the fo...
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