Abstract: A high-speed optical receiver implemented using a low-speed light receiving element is provided, which is configured to receive an optical signal having a higher transmission rate than that received using a general avalanche photo diode (APD) by expanding a frequency bandwidth using a receiver circuit configured together with an APD in the optical receiver including the APD, an APD bias control circuit, a transimpedance amplifier (TIA) for amplifying a signal received from the APD to have low noise, and a post amplifier; and a method of implementing such a high-speed optical receiver.

Abstract: Methods and apparatuses for optical communications are provided. By way of example, an optical transceiver includes a processing device coupled to a memory, an optical subassembly, and a programmable device. The optical subassembly is configured to receive and modulate a first signal carrying high speed user data for transmission to a remote device over an optical link. The programmable device is coupled to the processing device and configured to receive data relating to digital diagnostic monitoring information (DDMI) of the optical transceiver from the processing device, perform forward error correction encoding on the DDMI data to produce a remote digital diagnostic monitoring (RDDM) signal, and send the RDDM signal to the optical subassembly as a second signal to modulate for transmission. The optical subassembly is configured to current modulate the second signal on the first signal to produce a double modulated optical signal for transmission to the remote device.

Abstract: An optical film including at least one retardation film and at least one isotropic layer made of an isotropic material, wherein the difference in average refractive between the retardation film and the isotropic layer is at least 0.1 or more is provided. A method of adjusting wavelength dispersion characteristics of an optical film including stacking an isotropic layer onto a retardation film, and a method for preparing optical films having a variety of wavelength dispersion characteristics by coating the retardation film with the isotropic layer are provided.

Abstract: A coil electronic component includes: a coil part; an insulating layer covering the coil part; a magnetic body enclosing the coil part covered by the insulating layer; and an adhesive layer disposed between the insulating layer and the magnetic body to prevent chipping of the magnetic body.

Abstract: Disclosed is an optical communication receiver capable of compensating a DC offset while preventing an input load effect. The optical communication receiver includes an optical signal detector; an amplifier inputted with a photocurrent outputted from the optical signal detector; and a DC offset compensation unit provided therein with a third transistor and a fifth transistor which are connected in series to each other to prevent an input load effect, wherein the DC offset compensation unit compensates a DC offset by outputting at least a portion of DC current inputted to the amplifier to ground through the third transistor and the fifth transistor when the photocurrent is an over current more than a predetermined set value.

Abstract: The present invention relates to a pressure sensitive adhesive film for an orientating treatment of a photo-orientable layer, a laminated film, a method for preparing an optical filter or a stereoscopic image display device. In the present invention, the pressure sensitive adhesive film for an orientating treatment in a photo-orientable layer which can minimize the generation of the un-orientated regions, and can form the orientated pattern having high degrees of accuracy, and the preparation method for an optical filter using the pressure sensitive adhesive film are provided. Further, the present invention can provide the optical filter and the stereoscopic image display device having excellent performance.

Abstract: The present invention relates to a pressure sensitive adhesive film for an orientating treatment of a photo-orientable layer, a laminated film, a method for preparing an optical filter or a stereoscopic image display device. In the present invention, the pressure sensitive adhesive film for an orientating treatment in a photo-orientable layer which can minimize the generation of the un-orientated regions, and can form the orientated pattern having high degrees of accuracy, and the preparation method for an optical filter using the pressure sensitive adhesive film are provided. Further, the present invention can provide the optical filter and the stereoscopic image display device having excellent performance.

Abstract: Provided is an optical filter and a display device. The illustrative optical filter may be applied to a stereoscopic image display device so that the stereoscopic image display device can display a 3D image at a wide viewing angle without loss of brightness.

Abstract: Provided is a display device. An illustrative display device of the present application may display three-dimensional images or two-dimensional images, which may be enjoyed without glasses.

Abstract: A wire-wound inductor includes: a magnetic core; a first coil unit embedded in the magnetic core and formed by winding a conductive wire; a pair of second coil units bent from both ends of the first coil unit and including lead portions exposed to opposing surfaces of the magnetic core; and a pair of external terminals disposed on the opposing surfaces of the magnetic core and electrically connected to the lead portions of the pair of second coil units, respectively.

Abstract: Disclosed is an optical transceiver which includes an optical transmitter converting a first electrical signal into a first optical signal, an optical receiver converting a second optical signal into a second electrical signal, and a processing unit operatively coupled to the optical transmitter and the optical receiver. The processing unit is configured to obtain first wavelength information of the first optical signal and second wavelength information of the second optical signal and compare the first wavelength information and the second wavelength information to control a wavelength separation interval between the first optical signal and the second optical signal.

Abstract: The present application relates to an optical film and a use thereof. In the present application, through control of an alignment state of a liquid crystal compound in a liquid crystal layer, the liquid crystal layer may exhibit so-called reverse-wavelength dispersion while forming a single thin layer. An optical film including the liquid crystal layer may show optical modulation in a display device such as a liquid crystal display (LCD), organic light emitting device (OLED), or the like, or may be used in various applications, for example, as an optical element capable of improving light utilization efficiency, an element for implementation of a stereoscopic image and quality improvement thereof, and so forth.

Abstract: A method of manufacturing an electronic component having high inductance (L) and an excellent quality (Q) factor and direct current (DC)-bias characteristics includes forming a magnetic body in which internal coil parts are embedded, and forming a cover part including a magnetic metal plate on at least one of upper and lower portions of the magnetic body.

Abstract: A scheme is described for remote control of the output power of a transmitter in a smart SFP (or SFP+, or XFP) duplex (or BiDi, or SWBiDi) transceiver in a communication system using an operating system with OAM and PP functions, an OAM, PP & Payload Processor, a transceiver, an optical power meter (optional), a BERT, and an optical link in the field.

Abstract: An optical film, a polarizing plate and a display device are provided. The optical film can have desired phase retardation at a wide wavelength range, and also show no light leakage at an inclination angle. Also, the optical film can have ¼-wavelength phase retardation, and can be used for reflective or semi-transmissive/reflective liquid crystal display devices or organic light-emitting devices.

Abstract: A liquid crystal film (LCF) is provided. The exemplified LCF can be used as a reflective polarization plate, which can improve luminance and light utilization efficiency of a display device, such as an LCD, and the like.

Abstract: The present application relates to an optical device. The optical device according to one embodiment may be a light-dividing device, for example, a device that can divide incident light into at least two kinds of light having different polarization states. For example, the optical device can be used to realize a stereoscopic image.

Abstract: Disclosed herein is a chip inductor. The chip inductor according to the present invention includes a substrate on which a trough-hole is formed, a conductive coil that is formed on the substrate, an upper resin composite magnetic layer that is filled to surround the conductive coil so that a core is formed on a center portion of the substrate, a lower resin composite magnetic layer that is formed on a bottom portion of the substrate, and an external electrode that is formed on both sides of the upper and lower resin composite magnetic layers.

Abstract: An optical film, a reflective polarizing plate and a display device are provided. For example, the optical film may be used in the reflective polarizing plate which may enhance the efficiency of light utilization of a display device such as a liquid crystal display device and improve the brightness.

Abstract: Provided are an optical filter and a stereoscopic display device. The exemplary optical filter may be applied to the stereoscopic display device to observe a stereoscopic image in a wide viewing angle without the loss of brightness.