In DPSK communication system, the traditional way for bias voltage is loading a fixed bias voltage on the electro-optic modulator. For the influence of the temperature changes, the half-wave voltage of the electro-optic modulator may change and the DC bias supply voltage will have a certain degree of random fluctuations at the meantime which will cause the DC bias point of the modulator drift and consequently the communication systems are affected. To enhance the stability of the DPSK optical communication system and control the bias of Mach-Zehnder electro-optic modulators automatically, a PID control method has been proposed in this paper. After the actual operation, a DPSK signal transmission with transfer rate of 5Gb/s is built. Using the complex spectrum analyzer, stable signal and the constellation can be received. The automatic control system basically meets the needs of the DPSK transmission system of high stability, high accuracy and capacity of resisting disturbance.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Automatic bias control system of high speed electro-optic modulator in DPSK Systems


    Beteiligte:
    Xu, Miao (Autor:in) / Tong, Shoufeng (Autor:in) / Wang, Dashuai (Autor:in)

    Kongress:

    Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II ; 2014 ; China,China


    Erschienen in:

    Erscheinungsdatum :

    13.04.2015





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    High performance electro-optic polymer waveguide modulator

    Hwang, W.-Y. / Lee, H.-M. / Oh, M.-C. et al. | British Library Conference Proceedings | 1997


    High speed silicon electro-optic modulator with p-i-n comb diode

    Al-Saadi, A. / Eichler, H. J. / Meister, S. | British Library Online Contents | 2012


    Novel Millimeter-wave Electro-optic Modulator

    Bridges, W.B. / Sheehy, F.T. / Schaffner, J.H. | IEEE | 1990


    High-speed traveling wave electro-optic intensity modulator with a doped PIN semiconductor junction

    Vawter, G. A. / Hietala, V. M. / Wendt, J. R. et al. | British Library Conference Proceedings | 1996