Abstract
Abstract The mode structure of both active and passive graded-index waveguides with a parabolic-index profile and large-scale (in comparison with wavelength) periodic variations of the profile in the longitudinal direction is investigated analytically in the paraxial approximation of the scalar wave equation. Quasimode solutions which periodically reconstruct themselves up to some phase factor characterizing quasi-propagation constants are investigated in detail using a quantum-theoretical formalism. The possibility of effective control of the quasi-mode structure in such waveguides is shown and possible practical applications to different waveguide components and lasers are discussed. The spontaneous emission K factor for the quasi-modes in active and passive periodic waveguides is also evaluated.
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.
