METHOD AND STRUCTURE FOR A WAVELENGTH MULTIPLEX BY A GRATING COPPER ARRAY

By employing multiple grating couplers with distinct structures and wavelengths, combined with microlenses and bandpass filters, the bandwidth limitations of single couplers are overcome, enabling efficient wavelength division multiplexing across broad wavebands.

DE102025112481A1Undetermined Publication Date: 2026-06-25TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-03-31
Publication Date
2026-06-25

AI Technical Summary

Technical Problem

Existing optical signal transmission systems face limitations in bandwidth due to the inability of single grating couplers to support wide bandwidths such as CWDM, LWDM, and DWDM, leading to inefficiencies in wavelength division multiplexing.

Method used

The use of multiple grating couplers with different structures and characteristic wavelengths, combined with microlenses and bandpass filters, to optically couple laser beams of varying wavelengths into a single optical fiber, increasing bandwidth without individual coupler limitations.

Benefits of technology

This approach enhances the combined bandwidth by allowing multiple grating couplers to collectively support broad wavebands like CWDM, LWDM, and DWDM, reducing losses and improving signal transmission efficiency.

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Abstract

One method comprises the formation of a photonic engine. The formation of the photonic engine includes receiving a photonic die that has multiple grating couplers and multiple microlenses attached to the photonic die. The multiple grating couplers and the multiple microlenses are configured to be optically coupled to each other in a one-to-one correspondence. A fiber assembly unit is attached to the photonic engine. The fiber assembly unit comprises an optical fiber and a laser merging unit configured to optically couple the multiple microlenses and the optical fiber.
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Citation Information

Patent Citations

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