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Highly efficient spectrally encoded imaging using a 45° tilted fiber grating

Wang, Guoqing, Wang, Chao, Yan, Zhijun, Zhang, Lin (2016) Highly efficient spectrally encoded imaging using a 45° tilted fiber grating. Optics Letters, 41 (11). pp. 2398-2401. ISSN 0146-9592. E-ISSN 1539-4794. (doi:10.1364/OL.41.002398)

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A novel highly efficient, fiber-compatible spectrally encoded imaging (SEI) system using a 45° tilted fiber grating (TFG) is proposed and experimentally demonstrated for the first time. The TFG serves as an in-fiber lateral diffraction element, eliminating the need for bulky and lossy free-space diffraction gratings in conventional SEI systems. Under proper polarization control, due to the strong tilted reflection, the 45° TFG offers a diffraction efficiency as high as 93.5%. Our new design significantly reduces the volume of the SEI system, improves energy efficiency and system stability. As a proof-of-principle experiment, spectrally encoded imaging of a customer-designed sample (9.6 mm × 3.0 mm) using the TFG-based system is demonstrated. The lateral resolution of the SEI system is measured to be 42 ?m in our experiment.

Item Type: Article
DOI/Identification number: 10.1364/OL.41.002398
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK8300 Optoelectronic devices
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Chao Wang
Date Deposited: 28 Apr 2016 21:44 UTC
Last Modified: 29 May 2019 17:16 UTC
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