Add to BibSonomy
Abstract
Reconfigurable photonic integrated circuits enable high-bandwidth signal shaping with the prospect for scalability and compact footprint. Cointegration of electro-optical tunability with nonvolatile attenuation through functional materials allows for implementing photonic devices that operate on both phase and amplitude. Based on this approach, we propose an integrated photonic design for optical pattern generation deploying a continuous-wave laser and a single electrical function generator. We employ the nonvolatile and reconfigurable phase-change material ${{\rm Ge}_2}{{\rm Sb}_2}{{\rm Te}_5}$ (GST) as a tunable attenuator for an integrated photonic circuit on the lithium-niobate-on-insulator (LNOI) platform. The GST can be switched between its amorphous and crystalline phases, leading to an optical contrast of $\cong\!{18}\;{\rm dB}$. Combining this with integrated electro-optical modulators with a 4 GHz bandwidth in LNOI enables the generation of short optical pulses, based on the principles of inverse discrete Fourier transform.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Viphretuo Mere, Forrest Valdez, and Shayan Mookherjea
J. Opt. Soc. Am. B 40(5) D5-D14 (2023)
Yedeng Fei, Yin Xu, Yue Dong, Bo Zhang, and Yi Ni
Appl. Opt. 62(24) 6499-6506 (2023)
Amr O. Ghoname, Ahmed E. Hassanien, Edmond Chow, Lynford L. Goddard, and Songbin Gong
J. Opt. Soc. Am. B 40(5) D38-D43 (2023)