Coherent has been granted a patent for a wavelength reference device featuring a temperature-controlled housing, a broadband optical source, and an integral optical reference filter. This device emits a calibrated optical signal with known wavelengths, enhancing precision in optical measurements. GlobalData’s report on Coherent 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 Coherent, Lithium-ion batteries was a key innovation area identified from patents. Coherent's grant share as of July 2024 was 62%. Grant share is based on the ratio of number of grants to total number of patents.
Wavelength reference device with calibrated optical signal output
The patent US12072240B2 describes a wavelength reference device designed to provide a calibrated wavelength reference within a controlled internal environment. The device features a housing that maintains a known temperature and incorporates an optical reference filter with a resonant cavity formed by two mirrors. A broadband optical source, such as a superluminescent diode (SLED), emits an optical signal through the optical reference filter, which is integral to the housing. The device also includes an optical output for delivering the calibrated wavelength reference, and it may be equipped with a temperature control device and a temperature sensor, such as a thermistor, to ensure precise temperature regulation.
Additionally, the patent outlines various configurations and components that enhance the functionality of the wavelength reference device. These include options for mounting the broadband optical source in different orientations, the inclusion of lensing for collimation, and connectors for optical fiber integration. The device can be part of a larger apparatus that processes signal inputs, featuring a signal detection and processing module and a wavelength reference module that utilizes the described device. This modular design allows for integration with other components, such as an optical channel monitor, facilitating efficient signal calibration and processing in optical communication systems.
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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.
