Abstract
Optical phase modulators are used for many applications in optical communication systems and signal processing, but they are fundamentally limited in the amount of a monotonic phase change that can be induced due to practical physical limits on the drive-signal magnitude. In this paper, the necessary drive conditions are derived to achieve a boundless monotonic phase change on the output while keeping the drive inputs within practical physical bounds, i.e., comparable to an amplitude modulator. A simulation of a three-section modulator with two distinct drive signals is provided whereby a continuous phase change on the output is achieved with only a maximum phase shift of /spl pi//2 created in any individual section. The architecture has two outputs, therefore a design tradeoff can be made in choosing the power splitting ratio between the outputs. The amplitudes are kept constant as the phase is modulated. The other output is not frequency shifted and may provide a convenient heterodyne signal for subsequent coherent processing.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.