Sumitomo Osaka Cement has developed an optical modulator that operates at lower voltages using a differential signal output. The modulator includes a substrate, optical waveguides, and a control electrode with specific wiring for efficient modulation. This innovation aims to enhance optical communication systems. GlobalData’s report on Sumitomo Osaka Cement 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 Sumitomo Osaka Cement, Electrode active materials was a key innovation area identified from patents. Sumitomo Osaka Cement's grant share as of March 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.
Optical modulator with differential signal output for lower voltage
A recently granted patent (Publication Number: US11940708B2) discloses an optical modulator designed with specific features to enhance its performance. The modulator includes a substrate with an electro-optic effect and a thickness of 20 µm or less, an optical waveguide with a rib structure, and a control electrode with a unique wiring structure. The control electrode consists of two ground electrodes sandwiching three signal electrodes, each receiving a modulation signal of a differential signal. Additionally, the modulator incorporates a Mach-Zehnder type optical waveguide with specific branching configurations to optimize signal transmission.
Furthermore, the patent details additional features of the optical modulator, such as a wiring structure with a conversion line for differential signal input and output, a driver circuit on a relay substrate, and a crosstalk suppressing unit for signal clarity. These elements work together to improve the modulator's efficiency and signal quality. The design also includes multiple Mach-Zehnder type optical waveguides arranged in parallel, further enhancing the device's functionality. Overall, the patented optical modulator showcases innovative design elements aimed at advancing optical modulation technology for various applications.
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