Optical device and method for determining parameters of the same

TWI939974BActive Publication Date: 2026-09-21TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
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Patent Information

Application Number
TW114105804
Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
Priority Date
2024-12-24
Filing Date
2025-02-17
Publication Date
2026-09-21
Estimated Expiration
2045-02-16

AI Technical Summary

Technical Problem

Existing optical modulators have large diameters, limiting the number of tests that can be performed and affecting the accuracy of optical parameter determination, which is crucial for high-speed data communication systems.

Method used

The use of a ring resonator with a bent waveguide and P/N junctions in optical modulators reduces the size and sensitivity to fiber Bragg grating coupling conditions, allowing for precise determination of parameters such as optical loss and refractive index.

Benefits of technology

This approach enables high-speed data communication with improved accuracy and reduced size, overcoming limitations of traditional modulators by enhancing the precision of parameter measurement.

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Abstract

A method is provided for determining parameters of an optical device including a first waveguide and a resonator. The method includes coupling an optical signal from the first waveguide to the resonator. The resonator includes a first P / N junction and a ring waveguide, the first P / N junction being configured to modulate the resonant frequency of the resonator until the optical signal resonates in the resonator. The method further includes detecting the resonant spectrum of the optical signal from a through port of the first waveguide and determining the parameters of the optical device based on the resonant spectrum of the optical signal.
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Citation Information

Patent Citations

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  • Phase shifter element, method of manufacturing the same and electro-optic modulator including the same

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  • Electro-optical modulator

    US20100098372A1

  • Ring optical modulator

    US20120243828A1