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18 April 2021 Ultra-compact acousto-optic modulator of a fibre Bragg grating in a highly birefringent suspended core fibre
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Abstract
Highly efficient and compact acousto-optic modulator of a fibre Bragg grating is reported for the first time. The device is composed of millimetre scaled components and a 1 cm grating inscribed in a four air holes birefringent suspended core fibre. The reflection of the orthogonal polarization modes is tuned by a sinusoidal electrical signal at the resonance frequency of 469 kHz. A significant modulation depth of 45% is achieved at a maximum drive voltage of 10 V. The demonstrated 4 cm long all-fibre modulator is 60% shorter compared to previous similar setups, indicating new possibilities for stable and fast switching of fibre-integrated photonic devices.
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© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ricardo E. da Silva, Egor Manuylovich, Namita Sahoo, Martin Becker, Manfred Rothhardt, Hartmut Bartelt, and David J. Webb "Ultra-compact acousto-optic modulator of a fibre Bragg grating in a highly birefringent suspended core fibre", Proc. SPIE 11773, Micro-structured and Specialty Optical Fibres VII, 117730U (18 April 2021); https://doi.org/10.1117/12.2592228
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