Abstract
Utilizing the thermooptical effect of polymers, a compact variable optical attenuator (VOA) based on multimode interference (MMI) is demonstrated. By directly modulating in the MMI region according to overlapping imaging of MMI, variable attenuation is achieved. The device length is less than 6 mm. The experiment shows that the VOA has 25-dB attenuation at the driving power of only 7.8 mW. The response time is around 3-4 ms. The polarization-dependence loss is 0.3 and 0.8 dB when the attenuation is less than 15 dB and about 20 dB, respectively.
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.
