Infinera has been granted a patent for a photonic integrated circuit (PIC) with 2N channels optically coupled to N fibers for coherent detection. The device eliminates the need for a multiplexer and demultiplexer, reducing signal loss and noise. It also allows for easy measurement of laser outputs using optical taps. GlobalData’s report on Infinera gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Infinera, Data center optical networking was a key innovation area identified from patents. Infinera's grant share as of February 2024 was 71%. Grant share is based on the ratio of number of grants to total number of patents.
Optical device for coherent detection and processing of optical signals
A recently granted patent (Publication Number: US11929826B2) discloses an optical device comprising a substrate with 2N inputs, each including waveguides carrying optical signals with in-phase and quadrature components. The device features N lasers, optical hybrid circuits, attenuators, and splitters on the substrate to manage the light output. Additionally, the patent includes claims for a second substrate with waveguides and polarization elements, photodiodes for receiving mixing products, and optical amplifiers for signal enhancement. The lasers are tunable and can have different characteristics such as wavelength range and laser type.
Furthermore, the patent claims cover various aspects of the optical device, including the materials used for the substrate, the polarization of optical signals, and the specific configurations of the components. The lasers in the device can be widely tunable, distributed feedback (DFB) lasers, or local oscillator lasers, each with unique tunability characteristics. The inclusion of optical amplifiers, photodiodes, and hybrid circuits highlights the complexity and functionality of the device. Additionally, the patent mentions the use of a polarization beam splitter for managing optical signals. Overall, the patent provides a detailed description of an advanced optical device with multiple innovative features and configurations for efficient signal processing and management.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
