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Lower-depth programmable linear optical processors
DOI:10.1103/PhysRevApplied.21.014054.png)
摘要
En 中文
Programmable linear optical processors (LOPs) can have widespread applications in computing and information processing due to their capabilities of implementing reconfigurable on-chip linear transformations. A conventional LOP that uses a mesh of Mach-Zehnder interferometers (MZIs) requires 2N + 3 stages of phase shifters for N x N matrices. However, it is beneficial to reduce the number of phase-shifter stages to realize a more compact and lower-loss LOP, especially when long and lossy electro-optic phase shifters are used. In this work, we propose a structure for LOPs that can implement arbitrary matrices as long as they can be realized by previous MZI-based schemes. Through numerical analysis, we further show that the number of phase-shifter stages in the proposed structure can be reduced to N + 2 and N + 3 for a large number of random dense matrices and sparse matrices, respectively. This work contributes to the realization of compact, low-loss, and energy-efficient programmable LOPs.
Keyword:
COUPLED-MODE THEORY
PHASE-SHIFTER
EFFICIENT
ULTRAFAST
期刊
IF:
4.4
论文数:
7.1K
被引数:
2.8W
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