Class [009]
Computer & Software Products & Electrical & Scientific Products

Optical, measuring, signaling and checking apparatus and instruments in the nature of optical telecommunication hardware, namely, [ optical filter for wavelength division multiplexing, optical switches, fiber optic components, namely, fiber Bragg gratings for optical processing, ] fiber lasers that act as optical sources in optical telecommunication systems [ ; optical measuring, signaling and checking apparatus and instruments, namely, optical light guides, namely, waveguides in the optical domain, optical fibers, optical fiber lasers, optical fiber gratings in the nature of a component that is based on a periodic variation of the refractive index in optical light guides and used in optical telecommunication for equalization of optical amplifiers and used in optical sensing as a sensor element, optical fiber sensors used as thermometers and/or strain sensors for wavelength response to changes in temperature and strain; optical filters and optical fiber components used in telecommunications and optical sensing, namely, fiber Bragg grating, fiber based WDM network, fiber coupled optical isolator, fiber attenuator ]