Abstract: A transmitting device, a receiving device, an optical communication system, and associated methods are provided. The transmitting device transmits an optical signal containing data, and comprises: an optical tone generator for generating at least one optical tone; at least one encoder for performing advanced coding on at least one data signal respectively, each of the at least one data signal carrying a part of the data; at least one mapper for performing high order modulation on the at least one coded data signal; and an up-converter for up-converting the at least one high-order-modulated data signal into the optical signal to be outputted through the at least optical tone. Thereby, high speed (e.g., over 1-Tb/s) transmission per single channel over a long-haul distance (e.g. over 1000-km) with error-free recovery may be achieved.

Abstract: Based on optical coherence tomography (OCT) imaging of a portion of an eye, a mask of an anatomical feature is derived. Using the mask as a reference, a scan path is determined that is at least partially fitted to and/or partially enclosing the mask. OCT scan data corresponding to the scan path is acquired and analyzed to detect optic neuropathies.

Abstract: Geographic atrophy of the eye can be detected and measured by imaging the eye at a depth greater than the retinal pigment epithelium (RPE) at a plurality of locations of the eye, for example, using optical coherence tomography (OCT); determining a ratio of the intensities of imaging signals of a retinal layer(s) with respect to the intensity of imaging signals of a sub-RPE layer(s) at each location; determining representative values based at least in part on the determined ratios; generating a map of the representative values; and identifying diseased areas from the map. Contours and binary maps may be generated based on the identified diseased areas. The size and shape of the identified areas may be analyzed and monitored over a period of time.

Abstract: An optical communication system, a transmission apparatus and a reception apparatus, and a transmission method and a reception method are provided. The transmission apparatus transmits an optical signal, and comprises: at least one encoder for encoding at least one data signal, respectively; at least one first modulator for performing first modulation on the at least one encoded data signal, respectively, and generating at least one first modulated signal; at least one second modulator for performing second modulation, which is DFT-spread-OFDM modulation, on the at least one first modulated signal, respectively, and generating at least one second modulated signal; and an up-converter for up-converting the at least one second modulated signal into the optical signal to be transmitted. Thus, a PAPR of the optical OFDM transmission signal is decreased, a signal distortion caused by non-linearity of optical devices is reduced, and a reception quality of the signal is improved.

Abstract: An audio processing device includes an initial processing module to generate a stream of frequency coefficients based on input audio data, a watermarking module to embed a digital watermark into the stream of frequency coefficients to generate a modified stream of frequency coefficients, and a final processing module to process the modified stream of frequency coefficients to generate output audio data. In some implementations, the input audio data comprises unencoded audio data, the initial processing module comprises a frequency domain transform module to perform a time-to-frequency domain transform to generate the unencoded audio data, and the output audio data is encoded audio data. In other instances, the input audio data comprises encoded audio data, the initial processing module comprises an initial decoding module to partially decode the encoded audio data to generate the stream of frequency coefficients, and the output audio data is decoded audio data.

Abstract: A wavelength selective switch and a wavelength selection method are provided. The wavelength selective switch comprises a plurality of input ports, via which a plurality of light beams are input respectively, each light beam including at least one optical signal of a predetermined wavelength; at least one output port; and a wavelength separation apparatus including a wavelength separation device and a micro-mirror group, the wavelength separation device being configured to separate at least one optical signal from a light beam input via a predetermined one of the plurality of input ports, and the micro-mirror group being configured to adjust a propagation direction of the at least one optical signal, so that the at least one optical signal is output via a predetermined one of the at least one output port.

Abstract: One aspect provides an optical communication system. The system includes an optical-to-digital converter, a frequency estimator and a symbol synchronizer. The optical-to-digital converter is configured to receive an optical OFDM bit stream including an OFDM symbol bearing payload data and a symbol header preceding the OFDM payload data. The frequency estimator is configured to determine a carrier frequency offset of the payload data from the symbol header. The symbol synchronizer is configured to determine a starting location of the payload data within the bit stream by cross-correlating a synchronization pattern within the symbol header with a model synchronization pattern stored by the symbol synchronizer.

Abstract: A method for forming bond pads on a semiconductor die includes forming a dielectric stack including a bottom and top dielectric layer having a contact hole therethrough over a bond pad. An outer edge of the bottom dielectric layer within the contact hole extends beyond an outer edge of the top dielectric layer to define a bond pad edge. A second metal layer on a first metal layer is deposited. A first photoresist layer is formed exclusively within the contact hole. The second metal layer is wet etched to recess the second metal layer from sidewalls of the bottom dielectric layer in the contact hole. A second photoresist layer is formed exclusively within the contact hole. The first metal layer is wet etched to recess the first metal layer from the top dielectric layer. The first metal layer extends over the bond pad edge onto the bottom dielectric layer.

Abstract: There are provided a wavelength selective switch device, a communication apparatus and a wavelength switching method. The wavelength selective switch device includes an incidence unit; an exit unit; a wavelength diversifying-synthesizing unit for diversifying and multiplexing the respective incident lights in a first axis direction; a light adjustment unit for making the lights of respective wavelengths be not diversified in the second axis direction; a liquid crystal beam deflection unit having a plurality of pixels divided into sub-regions, for deflecting the lights of the respective wavelengths by changing phase-shift characteristics of the pixels in the sub-regions; a reflection unit, disposed in parallel with the liquid crystal beam deflection unit; a deflection driving unit for driving electrodes of the pixels to generate required phase-shift characteristics.

Abstract: A microfluidic chip (100) with a flow-guiding body (111) and the applications thereof in biochemistry, immunology, and molecule detection. The flow-guiding body (111) is disposed in a solution tank (101) of the microfluidic chip (100), the surface of the flow-guiding body (111) is enclosed by the antigen or antibody, and the gap between the flow-guiding body (111) and a wall (105) of the solution tank is 0 mm to 1.5 mm.

Abstract: A bias voltage control system and method for an optical IQ modulator are disclosed. The optical IQ modulator includes an I-branch Mach-Zehnder Modulator (MZM) to which an I-branch bias voltage is applied, a Q-branch MZM to which a Q-branch bias voltage is applied, and an optical phase shifter to which an orthogonal bias voltage is applied. The system comprises a photo-detector converting at least a part of an optical signal output by the optical IQ modulator to an electrical signal; an analog-to-digital converter converting the electrical signal to a digital signal; and a digital signal processor superimposing a first dither signal and a second dither signal on the I-branch bias voltage and the Q-branch bias voltage respectively to generate a first order harmonic signal and a second order harmonic signal, and controlling the bias voltages according to powers of a DC component, and the first and second order harmonic signals.

Abstract: In an example embodiment disclosed herein, there is described methods and a system for sharing of content in collaborative computing sessions. The methods and the system are operable to initiate a collaborative computing session between a plurality of participant devices, wherein at least one participant device operates as a presenter device to share data with at least one other participant viewer device. The methods and system are further operable to designate data to be shared with at least one viewer device. The methods and system are also operable to transmit the designated shared data to the at least one viewer device, render the shared data for display on at least one viewer device, wherein the shared data is rendered in accordance with display capabilities of the at least one viewer device, and display the rendered shared data on the at least one viewer device.

Abstract: An apparatus for performing communication by a dual-network terminal is disclosed by the present invention, wherein the dual-network terminal is a dual-network and dual-standby terminal, and the dual-network and dual-standby terminal comprises an application subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem and an identification card management module. The identification card management module is connected with an identification card, which stores information used for the 2G network and 3G network to perform identity authentication, and the 3G wireless communication subsystem is connected with the application subsystem and the identification card management module, and the 2G wireless communication subsystem is connected with the application subsystem and the identification card management module. A method for performing communication by a dual-network terminal is also disclosed by the present invention.

Abstract: An apparatus for performing communication by a dual network terminal is disclosed. The dual network terminal is a dual network and dual standby terminal, and the apparatus includes a 3G wireless communication subsystem, a 2G wireless communication subsystem and an identity identification module. The 2G wireless communication subsystem is connected with the identity identification module and the 3G wireless communication subsystem respectively, the 3G wireless communication subsystem is connected with the 2G wireless communication subsystem, and the 3G wireless communication subsystem and the 2G wireless communication subsystem include one virtual identity identification card administration module respectively.

Abstract: An apparatus for performing communication by a dual network terminal is disclosed. The dual network terminal is a dual network and dual standby terminal, and the apparatus includes an application subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem and an identity identification module. The 3G wireless communication subsystem is connected with 2G wireless communication subsystem, and wireless protocol stacks of the 3G wireless communication subsystem and 2G wireless communication subsystem include a virtual identity identification card administration module respectively.

Abstract: A wavelength selective switch and a wavelength selection method are provided. The wavelength selective switch comprises an input port, through which a light beam, including a plurality of optical signals having different wavelengths, is incident; a wavelength separation apparatus, including a Blue Phase Liquid Crystal (BPLC) device and configured to separate at least one optical signal from the light beam through the BPLC device; and at least one output port, configured to output the at least one optical signal separated by the wavelength separation apparatus respectively. With the wavelength selective switch and the wavelength selection method, a polarization-independent phase modulation can be realized without a depolarization device disposed in an optical path, which thereby simplifies an optical path, reduces an insertion loss, and lowers costs of the wavelength selective switch and even the entire optical communication system.

Abstract: According to an example, a managing server may establish a relation that associates a downlink interface of a gateway device with information of configuration content, receive a request for configuration content from a network device, identify a downlink interface of a gateway device that is directly connected with the network device, and send configuration content corresponding to the downlink interface of the gateway device to the network device based on the relation that associates the downlink interface of the gateway device with the configuration content so as to implement configurations of the network device.

Abstract: A method for forming bond pads on a semiconductor die includes forming a dielectric stack including a bottom and top dielectric layer having a contact hole therethrough over a bond pad. An outer edge of the bottom dielectric layer within the contact hole extends beyond an outer edge of the top dielectric layer to define a bond pad edge. A second metal layer on a first metal layer is deposited. A first photoresist layer is formed exclusively within the contact hole. The second metal layer is wet etched to recess the second metal layer from sidewalls of the bottom dielectric layer in the contact hole. A second photoresist layer is formed exclusively within the contact hole. The first metal layer is wet etched to recess the first metal layer from the top dielectric layer. The first metal layer extends over the bond pad edge onto the bottom dielectric layer.

Abstract: An example method is provided and includes determining, during a desktop sharing session of a meeting session, a content identity of a content item that is being shared, storing information indicative of the content identity in desktop sharing historical information, determining that the meeting session has ended, determining a post-meeting representation of the desktop sharing historical information, and causing display of the post meeting representation of the desktop sharing historical information.

Abstract: A reconfigurable optical add/drop multiplexer and a reconfigurable optical add/drop multiplexing method are provided. The reconfigurable optical add/drop multiplexer comprises: an optical processing unit for receiving a first optical signal containing a plurality of optical channels, processing the first optical signal to generate a second optical signal which is a part of the first optical signal, and outputting the second optical signal; and a coherent detection unit for performing a coherent detection on the second optical signal so as to separate from the second optical signal an optical channel contained therein, and outputting the optical channel.