Programmable Arbitrary Power Divider Based on dbs Algorithm

Abstract

The present application relates to a programmable arbitrary power divider based on the DBS algorithm. The power divider is designed on a silicon substrate, including: a multi-mode input waveguide, two multi-mode output waveguides and an optimized design area; the optimized design area includes a signal enhancement area and a power control area; the signal enhancement area is a symmetrical structure, through The DBS algorithm calculates the state of each cell in the signal enhancement area. The states of the cells in the signal enhancement area include: no holes or the first center hole; the first center hole is filled with air; the power control area is an asymmetric structure, The state of each cell in the power control area is calculated by the DBS algorithm, and the state of the cell in the power control area is the second center hole; the second center hole is filled with GSST; the state of GSST is changed by external power to achieve any power split ratio ; GSST states include: a-GSST amorphous state and c-GSST crystalline state. Any power fission ratio can be achieved using any of the power dividers described above.

Description

technical field [0001] The present application relates to the technical field of power devices, in particular to a programmable arbitrary power divider based on a DBS algorithm. Background technique [0002] In recent years, with the development of silicon photonics and its fabrication technology, photonic integrated circuits have received more and more attention. As one of the most basic devices in integrated on-chip photonics systems, power dividers have been widely used in many optical circuits. Power dividers are generally used for power distribution and power combination, and are mainly used in RF circuits such as balanced power amplifiers, balanced mixers, and antenna arrays. Conventional multimode interferometer-based power dividers have been widely used due to their reasonable packaging footprint and ease of fabrication. However, the size of the structure is large, the cost is high, and because it is a symmetrical structure, it can only achieve an even distribution...

AI Technical Summary

Problems solved by technology

However, this algorithm-based arbitrary power allocation cannot change its split ratio. Air holes are placed on the silicon structure, and the power split ratio is realized on a fixed structure. One structure can only achieve one split ratio. If another The power distribution of the ratio requires a new device to be prepared, and the cost is very high, which hinders the effective integration of photonic integrated circuits.

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