Abstract: An optical modulator includes a carrier and a waveguide disposed on the carrier. The waveguide includes a first optical coupling region, a second optical coupling region, first regions, and second regions. The first optical coupling region is doped with first dopants. The second optical coupling region abuts the first optical coupling region and is doped with second dopants. The first dopants and the second dopants are of different conductivity type. The first regions are doped with the first dopants and are arrange adjacent to the first optical coupling region. The first regions have respective increasing doping concentrations as distances of the first regions increase from the first optical coupling region. The second regions are doped with the second dopants and are arranged adjacent to the second optical coupling region. The second regions have respective increasing doping concentrations as distances of the second regions increase from the second optical coupling region.

Abstract: An image sensor chip and a sensing method thereof are provided. The image sensor chip includes a pixel array. The pixel array includes a plurality of pixel units, and each of the pixel units includes a light sensing circuit, a reset switch and an output circuit. The reset switch is coupled to a first terminal of the light sensing circuit. The reset switch resets the light sensing circuit during reset period. The output circuit is coupled to the first terminal of the light sensing circuit. The output circuit of the pixel unit outputs difference information corresponding to the difference between the first sensing result of the light sensing circuit in a first frame period and the second sensing result of the light sensing circuit in a second frame period after the first frame period to a corresponding one of a plurality of readout lines of the pixel array.

Abstract: The present disclosure provides a method of manufacturing a semiconductor structure having an electrical contact. The method includes providing a semiconductor substrate; forming a dielectric structure over the semiconductor substrate, the dielectric structure having a trench; filling a polysilicon material in the trench of the dielectric structure; detecting the polysilicon material to determine a region of the polysilicon material having one or more defects formed therein; implanting the polysilicon material with a dopant material into the region; and annealing the polysilicon material to form a doped polysilicon contact.

Abstract: The present disclosure provides semiconductor structure having an electrical contact. The semiconductor structure includes a semiconductor substrate and a doped polysilicon contact. The doped polysilicon contact is disposed over the semiconductor substrate. The doped polysilicon contact includes a dopant material having a dopant concentration equaling or exceeding about 1015 atom/cm3.

Abstract: A photonic structure is provided. The photonic structure includes a semiconductor substrate, and an oxide structure embedded in the semiconductor substrate, and an optical coupling region directly above the buried oxide layer. A side surface of the oxide structure is exposed from an edge of the semiconductor substrate. The optical coupling region is tapered to a terminus of the optical coupling region at the edge of the semiconductor substrate.

Abstract: An image sensor integrated with a convolutional neural network computation circuit is provided. The image sensor includes: a pixel array including pixels divided into pixel groups, wherein each pixel converts a light signal into a PWM signal; a convolution computation circuit controlling a turn-on time of a corresponding weighted current according to the first PWM signal of each pixel, and accumulating the weighted currents into an integrated current; a comparison circuit converting the integrated current into a second PWM signal and comparing it with that of an adjacent pixel group to output a larger one; and a classification circuit quantizing the second PWM signal to a quantization value according to a weight of a node in a fully-connected layer corresponding to each pixel group, accumulating the quantization values of all pixel groups into a feature value, and comparing the feature value with a feature threshold to obtain a classification result.

Abstract: A method for preparing a semiconductor device structure includes forming a target layer over a semiconductor substrate, and forming an energy-sensitive layer over the target layer. The method also includes performing a first energy treating process to form a first treated portion in the energy-sensitive layer, and performing a second energy treating process to form a second treated portion in the energy-sensitive layer. The method further includes removing the first treated portion and the second treated portion to form a first opening and a second opening in the energy-sensitive layer, and transferring the first opening and the second opening into the target layer.

Abstract: A semiconductor device including a source/drain region having a V-shaped bottom surface and extending below gate spacers adjacent a gate stack and a method of forming the same are disclosed. In an embodiment, a method includes forming a gate stack over a fin; forming a gate spacer on a sidewall of the gate stack; etching the fin with a first anisotropic etch process to form a first recess adjacent the gate spacer; etching the fin with a second etch process using etchants different from the first etch process to remove an etching residue from the first recess; etching surfaces of the first recess with a third anisotropic etch process using etchants different from the first etch process to form a second recess extending below the gate spacer and having a V-shaped bottom surface; and epitaxially forming a source/drain region in the second recess.

Abstract: The present disclosure provides an automatic berthing image ranging system for vessels and operation method thereof, the method comprising: obtaining a reference image around a position in which a vessel is located, the reference image comprises a first pattern and at least two second patterns; the reference image is projected to a reference plane to generate projection coordinates corresponding to the first pattern and the at least two patterns; determining a positional relationship between the vessel and a port by a predetermined distance, and the positional relationship is represented by an angle value.

Abstract: A package includes a photonic layer on a substrate, the photonic layer including a silicon waveguide coupled to a grating coupler; an interconnect structure over the photonic layer; an electronic die and a first dielectric layer over the interconnect structure, where the electronic die is connected to the interconnect structure; a first substrate bonded to the electronic die and the first dielectric layer; a socket attached to a top surface of the first substrate; and a fiber holder coupled to the first substrate through the socket, where the fiber holder includes a prism that re-orients an optical path of an optical signal.

Abstract: Apparatus, circuits and methods for reducing mismatch in an electro-optic modulator are described herein. In some embodiments, a described optical includes: a splitter configured for splitting an input optical signal into a first optical signal and a second optical signal; a phase shifter coupled to the splitter; and a combiner coupled to the phase shifter. The phase shifter includes: a first waveguide arm configured for controlling a first phase of the first optical signal to generate a first phase-controlled optical signal, and a second waveguide arm configured for controlling a second phase of the second optical signal to generate a second phase-controlled optical signal. Each of the first and second waveguide arms includes: a plurality of straight segments and a plurality of curved segments. The combiner is configured for combining the first and second phase-controlled optical signals to generate an output optical signal.

Abstract: A torque detection device includes a base, a load sensing member, a push member, a transmission module, and a drive module. The push member has a first extension wall and a second extension wall. The transmission module includes two adjustable transmission sets each including a torque transmission part. The torque transmission part respectively rests on the first extension wall and the second extension wall of the push member. The torque transmission part of the transmission module applies a force to push and press the push member reciprocatingly. The push member transmits the force of the torque transmission part to the load sensing member which cooperates with an electronic device to measure the maximum static friction torque of a detected workpiece.

Abstract: The present invention provides an extract of Dendrobii Caulis with eye care effect, wherein the extract of Dendrobii Caulis has an active ingredient including a picrotoxane-type sesquiterpene. The present invention further provides a pharmaceutical composition with eye care and a use of an extract of Dendrobii Caulis for preparing a pharmaceutical composition with eye care effect.

Abstract: A method and a system for manufacturing a semiconductor package structure are provided. The method includes: (a) providing a package body including at least one semiconductor device encapsulated in an encapsulant; (b) providing a flattening force to the package body; (c) thinning the package body after (b); (d) attaching a film to the package body; and (e) releasing the flattening force after (d).

Abstract: An optical attenuating structure is provided. The optical attenuating structure includes a substrate, a waveguide, doping regions, an optical attenuating member, and a dielectric layer. The waveguide is extended over the substrate. The doping regions are disposed over the substrate, and include a first doping region, a second doping region opposite to the first doping region and separated from the first doping region by the waveguide, a first electrode extended over the substrate and in the first doping region, and a second electrode extended over the substrate and in the second doping region. The first optical attenuating member is coupled with the waveguide and disposed between the waveguide and the first electrode. The dielectric layer is disposed over the substrate and covers the waveguide, the doping regions and the first optical attenuating member.

Abstract: Provided is an electronic dynamic calendar system and an operation method thereof for providing an electronic calendar capable of importing multimedia messages such as audio, photos and video. Different from conventional electronic calendars that can only record text messages therein, the electronic calendar can have richer content. In addition to a text message, a reminder of a multimedia message can be set according to the user's need such that the reminder content set by the user can be more clearly understood and expressed.

Abstract: A signal transmitting device is configured to transmit a radio frequency signal outputted from a chip. The signal transmitting device includes a substrate and a connecter. The substrate is coupled to the chip. The substrate includes a waveguide, and the waveguide is configured to transmit the radio frequency signal along a first direction. The connecter is coupled to the substrate and configured to extract the radio frequency signal from the substrate to transmit the same along a second direction. The second direction is perpendicular to the substrate.

Abstract: Disclosed are apparatus and methods for optical coupling in optical communications. In one embodiment, an apparatus for optical coupling is disclosed. The apparatus includes: a planar layer; an array of scattering elements arranged in the planar layer at a plurality of intersections of a first set of concentric elliptical curves crossing with a second set of concentric elliptical curves rotated proximately 90 degrees to form a two-dimensional (2D) grating; a first taper structure formed in the planar layer connecting a first convex side of the 2D grating to a first waveguide; and a second taper structure formed in the planar layer connecting a second convex side of the 2D grating to a second waveguide. Each scattering element is a pillar into the planar layer. The pillar has a top surface whose shape is a concave polygon having at least 6 corners.

Abstract: An anti-theft method for an electric vehicle is provided. The anti-theft method for an electric vehicle includes the following steps. An electronic anti-theft function is activated. Whether the electric vehicle is moving is determined. Whether the temperature of the motor is greater than a critical value is determined. When the temperature of the motor of the electric vehicle exceeds the critical value, the motor is reversed to generate a reverse resistance.

Abstract: A semiconductor structure according to the present disclosure includes a buried oxide layer, a first dielectric layer disposed over the buried oxide layer, a first waveguide feature disposed in the first dielectric layer, a second dielectric layer disposed over the first dielectric layer and the first waveguide feature, a third dielectric layer disposed over the second dielectric layer, and a second waveguide feature disposed in the second dielectric layer and the third dielectric layer. The second waveguide feature is disposed over the first waveguide feature and a portion of the second waveguide feature vertically overlaps a portion of the first waveguide feature.