Digital coherent receiver employing photonic downconversion for phase modulated radio-over-fibre links

Darko Zibar, Antonio Caballero Jambrina, Neil Guerrero Gonzalez, Christian Schaeffer, Idelfonso Tafur Monroy

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    A digital coherent receiver employing photonic downconversion is presented and experimentally demonstrated for phase-modulated radio-over-fibre optical links. The receiver is capable of operating at frequencies exceeding the bandwidth of electrical analog-to-digital converter by using photonic downconversion to translate the high-frequency input RF signal to the operating frequency range of the analog-to-digital converter. First, using linear digital demodulation scheme we measure SFDR of the link at microwave frequency of 5 GHz. Thereafter, successful signal demodulation of 50 Mbit/s binary phase shift keying (BPSK) modulated data signal at 5 GHz RF carrier frequency is experimentally demonstrated by using an analog-to-digital converter with only 1 GHz bandwidth. We successfully demonstrate signal demodulation, using the proposed digital coherent receiver with photonic downconversion, after 40 km of transmission through standard single mode fiber.
    Original languageEnglish
    Title of host publicationIEEE MTT-S International Microwave Symposium Digest, 2009. MTT '09
    Publication date2009
    ISBN (Print)978-1-4244-2803-8
    Publication statusPublished - 2009
    Event2009 IEEE MTT-S International Microwave Symposium - Boston, United States
    Duration: 7 Jun 200912 Jun 2009


    Conference2009 IEEE MTT-S International Microwave Symposium
    Country/TerritoryUnited States
    Internet address

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