Optical coding scheme for all-optical analog-to-digital conversion using asymmetrical Y-branch waveguide |
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Authors: | Xionggui Tang Jinkun Liao Rongguo Lu Heping Li Xiaoxia Zhang Lin Zhang Yongzhi Liu |
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Institution: | School of Opto-Electronic Information, University of Electronic Science and Technology of China, Chengdu, 610054, China |
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Abstract: | The novel optical coding scheme for all-optical analog-to-digital conversion has been proposed, in which asymmetrical Y-branch waveguide structures have been introduced to achieve the desired optical power splitting. The optical performance has been simulated by using finite-difference beam propagation method (FD-BPM), which shows that the designed component exhibits good coding performance. Experimentally, the optical coding component has been fabricated and measured. The optical power contrast between bit code 1 and 0 at output port is more than 37 dB, and measured imbalance of output power is less than 1.5 dB for bit code 1. |
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Keywords: | Optical coding All-optical analog-to-digital conversion Asymmetrical Y-branch waveguide |
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