Abstract
A novel nonlinear device for optical bistability based on a reflective fiber grating through the mode coupling between the LP 01 and counter propagating LP 02 modes (i. e., the reflective LP 01 ↔ LP 02 mode converter) is proposed and investigated. Both the transmissive and reflective properties of this nonlinear device are analysed, which show that the output-versus-input relation exhibits the optical bistability. The dispersion effect of optical bistability, i. e. the bistability in respect to the input wavelength, is also investigated. Our results show that when the input wavelength shifts to the shorter wavelength compared with the Bragg wavelength of DFB structure, the threshold of the switching power for the optical bistability can be reduced. When the input wavelength shifts to the longer wavelength, the bistable hysteresis loop is widened and the bistability is strengthened but this is at the expense of increasing the threshold of switching power on. In addition, we also demonstrate that both the threshold powers of switching on and off for a nonlinearly reflective LP 01 ↔ LP 02 mode converter are much lower than those of a conventional nonlinear fiber Bragg grating reflector.
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.
