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Method and apparatus for alignment of a line-of-sight communications link

專利號
US10868616B2
公開日期
2020-12-15
申請人
OptiPulse Inc.（US NM Albuquerque）
發(fā)明人
John Richard Joseph
IPC分類
H04B10/112; H04B10/073; H04B10/116; H04B10/50
技術領域
laser,mesa,waveguide,optical,gsg,lasing,array,structure,contact,emitting
地域： NM NM Albuquerque

摘要

Techniques are disclosed for aligning an optical transmitter with an optical receiver for a line-of-sight communications link, wherein the optical transmitter comprises a laser array emitter, the laser array emitter comprising a plurality of laser emitting regions, wherein each of a plurality of the laser emitting regions is configured to emit laser light in a different direction such that the laser array emitter is capable of emitting laser light in a plurality of different directions. The system can run produce emissions from different laser emitting regions until a laser emitting region that is in alignment with the optical receiver is found. This aligned laser emitting region can then be selected for use to optically communicate data from the optical transmitter to the optical receiver.

說明書

In a fourth embodiment, an oxidated single structure with multiple lasing regions is designed as a bottom-emitter rather than a top emitter. FIG. 8 through FIG. 14C provide details about Embodiment 4 and illustrate the process which can be used to make this embodiment. The lasing grid's light is emitted through the substrate forming a back emitter.

Light is transmissive in GaAs from wavelengths around 900 nm and greater. If the wavelength of the light engineered in the epitaxial design is in the range ?900 nm and above, the GaAs substrate transmits the light or is transparent to the light. If the epitaxial design includes an N mirror that is less reflective than the P mirror, a laser such as a VCSEL can emit the light from the N mirror through the substrate. The laser beams will propagate through the material, and the substrate can be a platform for optical components to collimate, spread, diverge, converge or direct the light. This enables integrated optical circuits with extremely high bright power to be formed. The single structure and the ground contact can then be integrated to a high speed electrical waveguide substrate enabling high frequency responses from the entire grid. A ground signal ground electrical waveguide is ideal for this high speed electrical waveguide. Another type of electrical waveguide that may be used is a microstrip waveguide (see FIG. 15), where the signal pad is separated from the ground pad by a thin dielectric layer on a substrate.

FIG. 8 is an illustration of a typical epitaxial design. Any high speed design can be used for VCSEL devices. FIG. 8 shows:

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