Gain Properties of Triply-Doped Graphene-Insulator-Graphene Nanosheet Waveguide
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Er3+-Tm3+-Pr3+ triply-doped graphene-glass-graphene (GGG) nanosheet waveguide amplifier, which is a promising candidate for integrated photonic devices, is modelled and numerically analyzed. The designed waveguide is composed of a triply-doped tellurite glass core. The core is sandwiched between two graphene layers. The rate and power propagation equations of a heterogeneous multi-level laser medium are set up and solved numerically to study the effects of waveguide length and active ion concentrations on amplifier performance at five different input signal wavelengths (1.310, 1.470, 1.530, 1.600 and 1.650 μm). The analytical results show that rareearth ion dopant concentrations at an order of 1026 ion/m3, waveguide length at 0.1m and pump power at 100mW can amplify 1.530 and 1.600 μm input signals with 1 μW power up to approximately 20.0 and 24.0 dB respectively. Finite-difference time-domain (FDTD) simulation results show that mode field radius of GGG waveguide is smaller than that of silicon waveguide. Consequently, GGG waveguide with the same pump and signal power and the same gain-medium length can produce higher gain than silicon waveguide.
Key wordsnanosheet waveguide Er3+-Tm3+-Pr3+ gain medium
CLC numberTN 928
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- CONFORTI E, RIBEIRO N S, GALLEP C M. Speed and noise limits of semiconductor optical amplifier space switches and wavelength-reuse schemes [C]//Latin America Optics and Photonics Conference. Washington, USA: Optical Society of America, 2014: LTh1C.3.Google Scholar
- LI X, SHIW, BAI X L. Optical amplification in Er: Yb co-doped fiber and their applications in fiber laser [J]. Proceedings of SPIE, 2017, 10457: 104571G.Google Scholar