Abstract: A non-electric shock protection system and method thereof for preventing an electric shock caused by shielding, absorption, and reduction of a leakage current, and preventing an arc by blocking an external surge.

Abstract: The present invention relates to a body insertable device having an outer body being bent; and an inner body positioned inside the outer body, having an accommodation space in which the resource soured is accommodated, and being capable of rotating inside the outer body, wherein a radiation emission direction is continuously adjusted by rotation of the inner body.

Abstract: A liquid crystal display device for compensating for negative shift stress of a thin film transistor and extending the lifespan of the thin film transistor, and a method of driving the same, are discussed. In the device, a high compensation gate voltage is applied to a gate line in a blanking period and a data voltage is applied to the subpixels of the gate when the high compensation gate voltage is applied.

Abstract: The present invention relates to a body insertable device having an outer body being bent; and an inner body positioned inside the outer body, having an accommodation space in which the resource soured is accommodated, and being capable of rotating inside the outer body, wherein a radiation emission direction is continuously adjusted by rotation of the inner body.

Abstract: In a method of treating a semiconductor substrate, a plurality of active regions and a plurality of trench isolation regions are formed by selectively etching the semiconductor substrate. The semiconductor substrate is washed by providing deionized water to the semiconductor substrate. A silicon-based solution is provided to the semiconductor substrate by replacing the deionized water disposed on the semiconductor substrate with the silicon-based solution. A silicon oxide material is formed from the silicon-based solution by performing a heat treatment on the silicon-based solution and the semiconductor substrate. The silicon oxide material fills the trench isolation regions.

Abstract: A liquid crystal display device for compensating for negative shift stress of a thin film transistor and extending the lifespan of the thin film transistor, and a method of driving the same, are discussed. In the device, a high compensation gate voltage is applied to a gate line in a blanking period and a data voltage is applied to the subpixels of the gate when the high compensation gate voltage is applied.

Abstract: In a method of treating a semiconductor substrate, a plurality of active regions and a plurality of trench isolation regions are formed by selectively etching the semiconductor substrate. The semiconductor substrate is washed by providing deionized water to the semiconductor substrate. A silicon-based solution is provided to the semiconductor substrate by replacing the deionized water disposed on the semiconductor substrate with the silicon-based solution. A silicon oxide material is formed from the silicon-based solution by performing a heat treatment on the silicon-based solution and the semiconductor substrate. The silicon oxide material fills the trench isolation regions.

Abstract: The present invention relates to an apparatus and a method for fiber optic perturbation sensing, in which it is possible to easily confirm whether an intrusion is occurred, an intrusion position, and an intrusion object by dividing an optical signal output from the optical signal generation unit, progressing the divided optical signals to optical paths having different lengths, coupling the divided optical signals to generate an sensing optical signal, outputting the generated sensing optical signal to the sensing optical fiber, dividing the sensing optical signal returning from the sensing optical fiber, progressing the divided sensing optical signals to the optical paths having different lengths, and coupling the divided sensing optical signals to generate an interference sensing optical signal.

Abstract: An optical cable identification apparatus for identifying an optical cable by disturbing an optical fiber, existing inside an optical cable desired to be identified, from outside the optical cable. An optical unit transmits two optical signals to a single strand of optical fiber inside the optical cable, and detects a phase difference, a time difference, and light intensity between two optical signals which are reflected due to the disturbance from the outside. A single-fiber ending unit generates the time difference. A signal processing unit removes noise from the two reflected optical signals and demodulates the optical signals. A sound output unit outputs the optical signals from the signal processing unit as sounds.

Abstract: An optical cable identification apparatus is disclosed. The optical cable identification apparatus capable of identity an optical cable by disturbing an optical fiber, existing inside an optical cable desired to be identified, from an outside. An optical unit transmits two optical signals to a single strand of optical fiber inside the optical cable, and detects a phase difference, a time difference, and light intensity between two optical signals which are reflected due to the disturbance from the outside. A single-fiber ending unit generates the time difference. A signal processing unit removes noise from the two reflected optical signals and demodulates the optical signals. A sound output unit outputs the optical signals from the signal processing unit as sounds.

Abstract: In order to identify an optical cable for optical communication from a remote place, a Sagnac interferometer including two strands of an optical fiber is formed in the optical cable, and a worker in the remote place applies a disturbance of a popping sound to an optical cable to be identified. The disturbance applied by the worker is detected and regenerated in the form of a sound. The optical cable can be easily identified by comparing the regenerated signal and the disturbed signal in the remote place to thereby prevent an incorrect optical cable from being cut. In addition, the optical cable can be more precisely identified by selecting a different light detecting frequency component in accordance with environment conditions.

Abstract: In order to identify an optical cable for optical communication from a remote place, a Sagnac interferometer including two strands of an optical fiber is formed in the optical cable, and a worker in the remote place applies a disturbance of a popping sound to an optical cable to be identified. The disturbance applied by the worker is detected and regenerated in the form of a sound. The optical cable can be easily identified by comparing the regenerated signal and the disturbed signal in the remote place to thereby prevent an incorrect optical cable from being cut. In addition, the optical cable can be more precisely identified by selecting a different light detecting frequency component in accordance with environment conditions.

Abstract: A polarization mode dispersion (PMD) emulator is disclosed which can easily replicate PMD effect in a fiber span. The PMD emulator of the present invention comprises: at least two sections of polarization maintaining (PM) fiber, each having a predetermined PMD value; mechanical twisting means which twist one of neighboring ones among the PM fiber sections; a single mode fiber spliced in between neighboring PM fiber sections; wherein the single mode fiber has a small PMD value negligible compared to any of the PM fiber sections. According to the present invention, PMD effect can easily be replicated in the field of experiments studying PMD effect of a real fiber span.

Abstract: An apparatus and method for detecting the state of polarization (SOP). The apparatus of the present invention includes a phase retarder and a polarizer which rotate with different speeds. In the method of the present invention, optical signals passed through the rotating phase retarder and the rotating polarizer are detected and their harmonic components related to rotating frequencies of phase retarder and polarizer are analyzed, which gives the Stokes parameters representing the state of polarization. According to the present invention, the amount of phase retardation at the phase retarder can be obtained together with the state of polarization using frequency component analysis, reducing measurement errors. The present invention has advantages in SOP measurement of wide wavelength range, increasing the measurement accuracy.

Abstract: A dispersion compensation device and an optical transmission system are capable of simultaneously compensating a dispersion value and dispersion slope in a single-mode optical fiber in a high-speed long-distance optical transmission system and a wavelength division optical transmission system. The dispersion compensation device includes N number of component optical fibers arranged in a serial fashion, N being a positive integer more than one, wherein each of the component optical fiber has a different dispersion value per a unit length, a dispersion slope per a unit length, and a different length.