Abstract
The spurious free dynamic range (SFDR) of a direct-detection RF/photonic link is restricted by nonlinearity of the optical intensity modulation. We report a compact quantum well Mach–Zehnder (MZ) optical intensity modulator with enhanced linearity. The MZ modulator's linearity is improved by canceling the nonlinear distortions from the MZ interferometer and the optical phase modulation. The compact modulator is less than 4 mm long and has a Vπ of ∼5.5 volt. In an RF photonic link, the modulator helped to achieve an SFDR of 117 dB·Hz2/3 at 1 GHz with 1.4 mA photodetector photocurrent. A down-conversion RF photonic link using this modulator demonstrated an RF-to-IF SFDR of 108.1 dB·Hz2/3.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
