Other

Ioptis Corp.

Georgios Margaritis

Mark V Brillhart

A novel narrow linewidth laser device is disclosed that includes a gain element, such as a quantum well, quantum dot or bulk waveguide laser chip and a fiber Bragg grating formed in an optical fiber positioned to receive the output from a first end of the gain element and return a portion of said output back into the gain element. The fiber Bragg grating is constructed so that its power reflectivity profile has a ratio of reflectivity slope over reflectivity at the 3 dB point below the reflectivity peak on the red side (longer wavelength side) of the grating larger than a value of 2/nm. The operating wavelength of the device may be tuned thermally, electrically, or thermo-electrically to be on the red side of the fiber Bragg grating reflectivity profile, preferably, but not necessarily, at the 3 dB point below the reflectivity peak or lower. In another embodiment, a second grating is optically coupled to a second end of the gain element and has a reflectivity profile that overlaps at least a portion of the reflectivity profile of the front end fiber Bragg grating.

Narrow linewidth semiconductor laser device

A novel free space optics transceiver is disclosed comprising at least one light source, at least one photodetector, corresponding positioning means that can independently adjust the position of the light source and the photodetector, and a controller that can send and receive alignment frames conforming to a communications protocol to and from a remote optical transceiver and can use information in the incoming alignment frames from the remote optical transceiver to appropriately adjust the position of the light source and the photodetector thereby maximizing the received power of light signals sent by the remote optical transceiver. Also, an alignment method is disclosed wherein the controller continuously adjusts the positions of the light source and the photodetector until a light signal is acquired from a remote optical transceiver. Then, the incoming alignment information is used to adjust the light source position to achieve bi-directional communication with the remote optical transceiver.

Free space optics alignment method and apparatus

A novel optical detection apparatus is disclosed comprising a plurality of photodetectors and a plurality of transimpedance amplifiers wherein the photodetectors and the amplifiers are electrically connected to each other and are located in close proximity to each other, thus allowing the detecting of high frequency optical signals over a large detection area. Further, logical circuitry is disclosed for processing the signals generated from the photodetectors and for determining the strength of incoming light signals on various portions of the detection area.

Free space optics photodetector and transceiver

An ergonomic laptop computer includes a main computer body with a keyboard unit, and a display unit. The height, distance and angle of the display unit can be adjusted by means of controllably extendable supportive members pivotally attached to the main computer body and attached to the display unit. The overall stability of the laptop computer is ensured by either appropriately selecting its weight or by using members attached posteriorly to the main computer unit that can controllably slide in and out of said main computer unit. In another embodiment, the height, distance and angle of the display unit can be adjusted by means of a free standing controllably extendable support base.

Ergonomic laptop display positioning supports

A portable computer comprising a main computer body with an embedded keyboard, and a display unit. The computer body is electrically connected with the display unit and the display includes a controllably collapsible and erectable display unit support for adjusting the position of the display unit with respect to the main computer body, whereby the display unit can be positioned at a comfortable and ergonomically safe position and the portable computer including the support can be folded compactly for storage or transportation. In another embodiment, the display unit is detachable from the main computer body, and is suspended by an external structurally stable object by suspension, whereby the display unit can be positioned at a comfortable and ergonomically safe position and no support needs to be transported or stored with the computer, thereby saving weight and space.

Growing community of inventors

Los Altos, CA, United States of America

Georgios Margaritis