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10 January 2005 Dynamic optical coupler using a Dammann grating
Caihui Di; Changhe Zhou; Huayi Ru
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Proceedings Volume 5623, Passive Components and Fiber-based Devices; (2005) https://doi.org/10.1117/12.576467
Event: Asia-Pacific Optical Communications, 2004, Beijing, China
Abstract
Driven by the fast development of fiber communication networks, there exists a strong need for a dynamic coupler with a large number of output ports. In our work, we developed a dynamic optical coupler by employing a specially designed Dammann grating that consists of two areas, which are the Dammann-grating area and the blank area. When incoming beams entirely impinge on the Dammann-grating area of the plate, this device demonstrates 1×8 dynamic optical coupler with good uniformity of 0.03 and low insertion loss of about 10.7 dB for each channel as a splitter at the wavelength of 1550 nm. When incoming beams entirely impinge on the blank area of the plate, this device achieves a low insertion loss of 0.43 dB as a combiner. Therefore, this device can achieve the beam splitter and combiner as a switch between them according to the relative shift between two areas of the plate. The experimental results are reported in detail in this paper.
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Caihui Di, Changhe Zhou, and Huayi Ru "Dynamic optical coupler using a Dammann grating", Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); https://doi.org/10.1117/12.576467
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