Abstract:
An optical transceiver for detecting an incoming light beam and for transmitting an outgoing light beam along a common optical axis is provided. Such an optical transceiver provides a compact optical transceiver that is suitable for a wide variety of applications.
Abstract:
A method and system for the communication of data between data systems and through an optical interface is disclosed. A multi-component photonic package (or optical package)(11, 74, 90) and at least one optical fiber (77) are coupled to create an optical data interface, thereby enabling data communications between devices, for example CPUs(75) and display units (72), through the optical interface. The photonic package (11, 74) thus provides a highly integrated and flexible high bandwidth communications package suitable for data communications. At least one photonic or electro-optical data component (16) is mounted on a multi-element leadframe (15). The photonic components (16) and multi-element leadframe 815) is then overmolded with an encapsulant (10) to create an integrated multi-photonic-device package. The light source (16) may be confgured as a plurality of vertical cavity surface emitting lasers (VCSELs) and/or detectors. The light source (16) may be coupled with a plurality of optical fibers to create an optical fiber interface. The plurality of optical components (16) may be configured to form a detector array.
Abstract:
Methods and apparatus for monitoring the power level of a multi-wavelength optical signal are provided, making use of a light detector comprising a first and a second absorbing layer having both the same conductivity type, and intermediate layer of a second conductivity type and means for providing an indication of a change in power of the first and/or the second wavelength of light as measured by the respective absorbing layers. Also provided are methods and apparatus for adjusting the power level of selected optical emitters to compensate for the changes in power levels. An optoelectronic transmitter for receiving electrical input signals and transmitting corresponding optical output signals in a common light beam comprises electrical modulators, optoelectronic emitters, an optical combiner, an optoelectronic detector, means for separating the signals detected by the detector, and means for adjusting the power of the optoelectronic emitters.
Abstract:
A multiple laser optical sensing system and method for detecting target characteristics are disclosed. The system includes a laser source with at least two emission apertures from which laser signals are emitted. The system also includes at least one detector, which is operationally responsive to the laser source. Finally, the system includes a microprocessor that is operationally coupled to the detector(s). In operation, the laser source emits into an environment at least two laser signals, one from each emission aperture. The detector detects the laser signals after the signals pass through the environment, which is occupied by a target, and the microprocessor determines target characteristics based on the laser signals received by the detectors.
Abstract:
A system and method for VCSEL (vertical cavity surface emitting laser) polarization control is disclosed, including methods and apparatus comprising a component package (302, 304) having self-aligning features (316, 318), for indicating an alignment axis (320, 322), and upper surface aperture (314) formed therein, a vertical cavity surface emitting laser device (308) having two emission polarizations (204) normal to one another, disposed within the component package and aligned such that each emission polarization is at about 45 degrees with respect to the alignment axis, and a linear polarization element (400, 402, 406) having a polarization direction (206), spanning the aperture and disposed such that the polarization direction is parallel to the alignment axis.
Abstract:
A method and system for the communication of data between data systems and through an optical interface is disclosed. A multi-component optical package (photonic package) and at least one optical fiber are coupled to create an optical data interface, thereby permitting data communications between devices, for example CPUs and display units, through the optical interface. The photonic package thus provides a highly integrated and flexible high bandwidth communications package suitable for data communications. At least one electro-optical data component is mounted on a multi-element leadframe. The photonic components and multi-element leadframe is then overmolded with an encapsulant to create an integrated multi-photonic-device package. The light source may be configured as a plurality of vertical cavity surface emitting lasers (VCSELs) and/or detectors. The light source may be coupled with a plurality of optical fibers to create an optical fiber interface. The plurality of optical components may be configured to form a detector array.
Abstract:
A system and method for VCSEL (vertical cavity surface emitting laser) polarization control is disclosed, including methods and apparatus comprisin g a component package (302, 304) having self-aligning features (316, 318), for indicating an alignment axis (320, 322), and upper surface aperture (314) formed therein, a vertical cavity surface emitting laser device (308) having two emission polarizations (204) normal to one another, disposed within the component package and aligned such that each emission polarization is at abo ut 45 degrees with respect to the alignment axis, and a linear polarization element (400, 402, 406) having a polarization direction (206), spanning the aperture and disposed such that the polarization direction is parallel to th e alignment axis.
Abstract:
A laser optical sensing system and method for detecting target characteristics are disclosed. The system includes a laser source with at least two emission apertures from which laser signals are emitted. The system also includes at least one detector, which is operationally responsive to the laser source. The system includes a microprocessor that is operationally coupled to the detector(s) for processing signal data, a memory accessible by the microprocessor for storing target characteristics (e.g., unique signals), and a software module accessible by the microprocessor for enabling system training and detection operations. In operation, the laser source emits into an environment at least two laser signals, one from each emission aperture. The detector detects the laser signals after the signals pass through the environment, which is occupied by a target, and the microprocessor determines target characteristics based on the matching of laser signals received by the detector(s) and characteristics stored in memory.
Abstract:
Multiple laser optical sensing systems and methods for detecting target characteristics are disclosed. The present invention detects the presence of an object in a monitored area using an laser-based object detection system and may selectively cause a controlled response when an object is detected. At least two laser signals may be emitted into a monitored area using a vertical cavity surface emitting laser structure. At least one detector receives any laser signals not blocked by an object. The system determines the presence or absence of an object in the environment using a microprocessor and determines the objects characteristics by comparing received laser signals associated with it to object characteristics stored in a memory. The system may selectively causing a controlled response in accordance with the determination of object characteristics and/or correlating response criteria.
Abstract:
An optical transceiver for detecting an incoming light beam and for transmitting an outgoing light beam along a common optical axis is provided. Such an optical transceiver provides a compact optical transceiver that is suitable for a wide variety of applications.