Abstract
In this Letter, we have proposed an in-fiber duplex optical antenna based on a 45° radiated titled fiber grating (RTFG), in which the 45° RTFG not only radiates the light from the fiber core to the free space, but also harvests the light from the free space back into the fiber core. Using the finite difference time domain method, we have theoretically analyzed the light recoupling efficiency of the RTFG. The simulated results have shown that the RTFG-based optical antennas have a maximum coupling efficiency of 10%. The recoupling wavelength and efficiency are related to the grating period and horizontal incidence angle. Furthermore, we demonstrate a programmable spectral filtering system based on the 45° RTFG antennas, which could achieve filtering with arbitrary spectral shapes. The spectral resolution is 0.4 nm and the insertion loss is around 20 dB. The proposed programmable spectral filtering system has a compact structure compared with the traditional filter.
© 2022 Optica Publishing Group
Full Article | PDF ArticleCorrections
Qingguo Song, Yuze Dai, Xiangpeng Xiao, Chen Liu, Haoshuo Chen, Qizhen Sun, Lin Zhang, and Zhijun Yan, "In-fiber duplex optical antenna and its programmable spectral filter application: publisher’s note," Opt. Lett. 47, 5581-5581 (2022)https://opg.optica.org/ol/abstract.cfm?uri=ol-47-21-5581
7 October 2022: A typographical correction was made to the name of the first author.
More Like This
Qingguo Song, Yuze Dai, Xiangpeng Xiao, Chen Liu, Haoshuo Chen, Qizhen Sun, Lin Zhang, and Zhijun Yan
Opt. Lett. 47(21) 5581-5581 (2022)
Qingguo Song, Yuze Dai, Xiangpeng Xiao, Qizhen Sun, Kaiming Zhou, Lin Zhang, and Zhijun Yan
Opt. Express 30(13) 22538-22549 (2022)
Chaoran Wang, Xingliang Li, Shumin Zhang, Dan Yan, and Huijie Li
Opt. Lett. 47(11) 2698-2701 (2022)