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Highly Fluorescent Metallo-Supramolecules Based On Terpyridine-Based Monomers And Transition Metals Have Been Obtained. These Robust Supramolecules Provide High Quantum Yields With Emissions From Violet To Blue, Green Or Yellow Color. They Have Emerged As Promising Emitters For Polymeric Light-Emitt..... [更多]
This invention is about three new measuring methods to determine the twist angle and retardation value of any twisted nematic liquid crystal cell. Twist angle of the liquid crystal alignment and the retardation value are important design parameters in determining the optical performance of liquid c..... [更多]
A railway monitoring system firstly includes an optical fiber. A first part of the fiber is attachable to one of a pair of tracks of a rail, and a characteristic of the first part of the fiber is variable in correspondence to variance of a characteristic of said one track where the first part of fib..... [更多]
An optical pulses emitter includes a first and a second Fabry-Perot laser diodes. The first and second laser diodes have a first and second working optical wavelength band respectively, and the first and second working wavelength bands has at least an overlapped wavelength band. The emitter also inc..... [更多]
Tags: optics
A method of controlling the state of polarization of an optical signal includes injecting the optical signal into a laser diode and matching the wavelength of the optical signal to a longitudinal mode of the laser diode. A stabilizer signal can also be injected in to the laser diode. The wavelength ..... [更多]
Tags: optics
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