상세정보
학술지
Electrochromic Infrared Light Modulation in Optical Waveguides
- 발행일
- 202001
- 출처
- Advanced Optical Materials, v.8 no.1, pp.1-8
- ISSN
- 2195-1071
- 출판사
- Wiley
- 협약과제
- 19HB2600, 근거리 저속 이동형 양자암호통신을 위한 편광기반 무선 양자키분배 송수신부 집적화 모듈 기술 개발, 윤천주
- 초록
- Electrochromic materials and devices have attracted much attention with their ability to tune the transmissions of visible to infrared (IR) light, allowing the creation of smart windows. This study presents a novel electrochromic device (ECD)-based photonic device that can modulate IR light intensity in a planar optical waveguide ECD. To configure it, a multilayer ECD made of WO3 is integrated on a polymer optical waveguide platform. By using the waveguide to change the optical properties of the ECD electrically, IR light propagating along the optical waveguide core undergoes electroabsorption loss due to the change in charge carrier density in WO3 layer and its intensity is modulated with an extinction depth of 0.6 dB mm?닋1. Experimental results show that the device is capable of discrete intensity attenuation by applying a distinct level gate voltage. Periodic application of gate voltage leads the device to serve as an optical modulator on the order of subseconds. The results also confirm that a new approach to consider ECD-based optical modulators can pave the way for the development of planar photonic-integrated circuits and systems.
- KSP 제안 키워드
- And systems, Electrochromic device(ECD), IR light, Light modulation, New approach, Periodic application, Planar optical waveguide, Polymer optical waveguide, charge carrier density, electrochromic materials and devices, gate voltage