Simulation and properties of Erbium-Doped Distributed Bragg Reflectors (ED-DBRs) and Fiber Bragg Gratings (ED-FBGs) |
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| Affiliation: | 1. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China;2. College of Information Science and Engineering, Ningbo University, Ningbo 315201, PR China;3. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, PR China;4. Ningbo Key Laboratory of Silicon and Organic Thin Film Optoelectronic Technologies, Ningbo 315201, PR China |
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| Abstract: | The structure of an active Erbium-Doped Distributed Bragg Reflector (ED-DBR) and a Fiber Bragg Grating (ED-FBG) is simulated using a rigorous transmission line model and an approximate version of the coupled-mode theory, respectively. The basic calculation steps and assumptions of the proposed simulation models are described and the key parameters that determine the devices’ reflection characteristics are in detail discussed. By applying the proposed transmission line model, numerical results are provided for both spectral reflectivity and transparency response for an active-slab DBR with increased erbium-ion concentration. In addition, using coupled-mode theory for the simulation of the cylindrical geometry of the ED-FBG device, the pump power-dependent reflection and transmission coefficients are obtained and their potential use in active sensor applications are discussed. |
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| Keywords: | Erbium-doped distributed Bragg reflectors Erbium-doped fiber Bragg-gratings Coupled-mode theory Transmission line model |
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