Intel Corporation

William Wong

Achintya K Bhowmik

Ut Tran

Nagesh K Vodrahalli

Ruolin Li

Hamid Eslampour

Hai-Feng Liu

Gennady Farber

Tsung-Ein Tsai

Jesper Arentoft Jayaswal

David Alan Brown

Michael L Rutigliano

Ping Qu

Jesper Jayaswal-Arentoft

Jesper Jayaswal-Arentoff

A planar light circuit may be mounted in the housing a one-point mounting. The one-point mounting may reduce the tendency of thermal deformations in the housing to be transmitted to the planar light circuit.

Mounting a planar light wave circuit in a housing

Embodiments of an optical detection apparatus are disclosed which may include one or more of a waveguide, a trench formed in the waveguide, a reflective surface, and a photodetector. The waveguide may be formed in a semiconductor substrate to propagate an optical signal received at a first end of the waveguide. The trench may also be formed in the waveguide having a first sidewall and a second sidewall, the first and second sidewalls forming first and second angles with the waveguide's propagation direction. The second sidewall may include a reflective surface formed thereon. The photodetector may be configured to receive an optical signal propagated in the waveguide, through the first sidewall and reflected from the reflective surface on the second sidewall.

Method and apparatus to generate and monitor optical signals and control power levels thereof in a planar lightwave circuit

A variable optical attenuator multiplexer having at least one thermal isolating optical joint. The variable optical attenuator multiplexer including a plurality of planar lightwave circuit components, such as, for example a combination of an array waveguide grating, a variable optical attenuator, and/or a power monitor. The planar lightwave circuit components are joined with an optical adhesive. The components may be thermally isolated by the formation of a widened space or gap between the component joints, and/or by creating a trench in the optical adhesive.

Variable optical attenuator multiplexer with a thermal isolating optical joint

An optical transmitter includes an external cavity laser array formed in a PLC, a trench-based detector array and an AWG. The external cavity laser is formed using an array of substantially similar laser gain blocks and an array of gratings formed in waveguides connected to the gain blocks. Each grating defines the output wavelength for its corresponding external cavity laser. Each detector of the detector array includes a coupler to cause a portion of a corresponding laser output signal of the laser array to propagate through a first sidewall of a trench and reflect off a second sidewall of the trench to a photodetector. In one embodiment, the photodetector outputs a signal indicative of the power level of the reflected signal, which a controller uses to control the laser array to equalize the power of the laser output signals.

A simplified method and apparatus for creating counterfeit-resistant labels is described. A laser is used to mark a retro-reflective material such that light only from specific directions are reflected back towards the source. During authentication of the labels, the label is tilted to verify that only light from the specific directions are reflected back towards the source.

Laser marking process on retro-reflective material for security labels

Growing community of inventors

Saratoga, CA, United States of America

William Wong