Abstract: An optical power divider using a beam separator and a beam expander, and a fabrication method therefor. The optical power divider includes an input optical waveguide having an input port for receiving incident light, for guiding the light incident via the input port, a plurality of output optical waveguides having at least two output ports, for outputting the light incident via the input optical waveguide to the output ports, wherein the number of output optical waveguides is equal to that of the output ports, and a beam separator located at a branch area in which the light incident on the input optical waveguide diverges toward the output optical waveguides, the beam separator being made of a material having a refractive index lower than the core of the input and output optical waveguides, for separating the light to the output optical waveguides with a predetermined ratio. Therefore, the length of the optical power divider becomes short and insertion loss can be lowered.

Abstract: An apparatus for measuring the wavelength, optical power, and an optical signal-to-noise ratio (OSNR) of each optical signal in wavelength-division-multiplexing optical communication includes: elements for splitting a part of wavelength-division-multiplexed (WDM) signals, elements for amplifying the WDM signals and generating spontaneous emission light simultaneously, elements for reflecting a predetermined section of the spontaneous emission light and generating an optical reference signal, and elements for combining the optical reference signal with the part of the WDM signals split by the splitting elements and generating a combined light. The apparatus has components for filtering the combined light at a fixed temperature and generating a waveform which is the same as an optical spectrum of the combined light in the time domain.

Abstract: A method and system for mapping a number of characters in a string, wherein the string comprises a combination of characters representing indexed expressions and a combination of characters representing non-indexed expressions. One embodiment produces a weight array that can be utilized to compare a first and second string having indexed and non-indexed expressions. In one embodiment, a method generates a set of special weights for characters that represent indexed and non-indexed expressions. The method then associates a weight value of an indexed expression with the specific group of characters representing a specific non-indexed expression, and generates a weight array by retrieving a plurality of special weights associated with the specific group of characters representing the specific non-indexed expression and the associated weight value of the indexed expression.

Abstract: In a computer operating system having a user interface, a resource loader, and a registry resource database, a method for dynamically verifying whether the resource content of a resource module is compatible with the most current version of the operating system. Upon obtaining a request for a resource, the resource loader verifies that the resource modules remain compatible with the operating system prior to loading a resource from an alternate resource module. In accordance with one embodiment of the present invention, the operating system has a multilingual user interface and utilizes resource modules that are language specific.

Abstract: The present invention relates to a wavelength insensitive passive polarization converter which can rotate the direction of optic axis of waveguide by employing poled electro-optic polymer waveguides and a method for controlling the optic axis direction of the poled polymer waveguides. A passive polarization converter of present invention is equipped with poling electrodes at top and bottom of a planar waveguide consisting of three layers of electro-optic polymer, and it comprises: a polarizer in which poling-induced optic axis aligned horizontally; a polarization rotator in which the azimuth angle of the optic axis is slowly changed along the propagation direction from horizontal to vertical direction; and, an analyzer in which poling-induced optic axis aligned vertically.

Abstract: A JAVA-based virtual machine that supports input method editor (IME) functionality in three contexts: (1) using JAVA-based IMEs with a JAVA virtual machine; (2) writing JAVA-based IMEs; and (3) integrating a JAVA virtual machine to system IMEs. The virtual machine includes a windows manager, an input method manager, one or more IMEs and/or keyboard drivers (KBDs), and a component. The virtual machine may also include an IME bridge for integrating the virtual machine with a system IME. The windows manager serves as a gateway between the operating system and the virtual machine. The input method manager (IMM) serves as a router between the windows manager and a plurality of IMEs and keyboards driver (KBDs). The IME includes a look-up table of composed characters that are indexed by Unicode keyboard commands. The component typically renders a user interface that allows the user to manipulate the composed characters returned by the IME.