Pitchappa, P., Kumar, A., Singh, R., & Wang, N. (2021). Electromechanically Tunable Frequency‐agile Metamaterial Bandpass Filters for Terahertz Waves. Advanced Optical Materials, 10(2), 2101544. Portico. https://doi.org/10.1002/adom.202101544
Infrared (IR)-emitting RE doped materials have been extensively used to fabricate active components of integrated optical devices in various fields, such as fiber amplifiers, telecommunications, optoelectronics, and waveguides. Among various RE elements, trivalent erbium ions (Er 3+) are of great interest since their emissive behavior span the low loss telecommunication window of 1300–1650 nm. In this paper, we report two types of polymeric waveguide amplifiers. 8 cm long, lithographically patterned spiral waveguides provide 8 dB of gain using a 980 nm pump power of 95 mW. Gain is observed from 1530 to 1590 nm. We further report the first demonstration of polymeric waveguide amplifiers fabricated using 3D printing methods based on two-photon lithography, paving the way for rapid prototyping of active 3D printed devices and active photonic devices which may transcend planar limitations.
This research / project is supported by the A*STAR - Advanced Manufacturing and Engineering Programmatic Grant
Grant Reference no. : A18A5b0056
This is the peer reviewed version of the following article: Pitchappa, P., Kumar, A., Singh, R., & Wang, N. (2021). Electromechanically Tunable Frequency‐agile Metamaterial Bandpass Filters for Terahertz Waves. Advanced Optical Materials, 10(2), 2101544. Portico. https://doi.org/10.1002/adom.202101544, which has been published in final form at doi.org/10.1002/adom.202101544. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.