Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Liquid crystal-based widely tunable integrated optic wavelength filters

Not Accessible

Your library or personal account may give you access

Abstract

We report widely tunable wavelength filters using liquid crystal (LC)-based long-period waveguide gratings (LPWGs). The high birefringence and electrically tunable refractive index of the LC have been used to achieve a tuning range covering most of the S, C, and L bands of an optical communication system. E7 LC has been used as a cover layer in an LPWG rib waveguide structure. The LPWG structure couples light from the fundamental mode to the slab modes of the waveguide. This results in transmission dips at resonance wavelengths. The mode constants of the coupling modes can be changed by controlling the refractive index of the LC and hence the resonance wavelengths by using the externally applied electric field. We have carried out numerical simulations to analyze the performance of E7 LC-based LPWGs on various substrates such as ion-exchanged BK7 glass and proton-exchanged LiNbO3 and silicon-on-insulator and silicon nitride substrates. The potential applications of the device are electrically tunable wavelength filters for optical communication systems.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Wavelength tunable infrared light source based on semiconductor-integrated liquid crystal filter

Yu-Hsin Yao, Chun-Ta Wang, Rui-Ren Chen, Hung-Chang Jau, Yi-Jen Chiu, and Tsung-Hsien Lin
Opt. Express 20(20) 22872-22877 (2012)

Electro-Optic Long-Period Waveguide Gratings in Lithium Niobate

W. Jin, K. S. Chiang, and Q. Liu
Opt. Express 16(25) 20409-20417 (2008)

Double component long period waveguide grating filter in sol-gel material

Abderrafia Moujoud, Hyun Jae Kim, Sung Ho Kang, Gyong-Jin Oh, Woo-Soo Kim, Byeong-Soo Bae, and Sang-Yung Shin
Opt. Express 15(23) 15147-15153 (2007)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved