{"id":4498,"date":"2020-10-28T14:11:53","date_gmt":"2020-10-28T18:11:53","guid":{"rendered":"https:\/\/aerotechinc.wpengine.com\/?p=4498"},"modified":"2024-11-12T15:49:43","modified_gmt":"2024-11-12T20:49:43","slug":"optical-alignment-algorithms","status":"publish","type":"post","link":"https:\/\/www.aerotech.com\/optical-alignment-algorithms\/","title":{"rendered":"Optical Alignment Algorithms"},"content":{"rendered":"<p>Precision motion mechanics, such as Aerotech\u2019s <a href=\"https:\/\/aerotech.com\/product\/process-specific-products\/fibermaxhp-multi-axis-photonics-alignment-system\/\">FiberMaxHP<\/a> and other <a href=\"https:\/\/www.aerotech.com\/product\/6-axis-photonics-alignment-system\/\">photonic alignment platforms<\/a>, are critical for enabling high-quality results and efficient throughput for <a href=\"https:\/\/www.aerotech.com\/industries\/fiber-optics-and-silicon-photonics\">photonic device testing and manufacturing<\/a>. However, the hardware for these precision alignment applications is just one part of the solution; the control software optimizing motion commands also plays a key role. Purpose-built control software reduces startup time for new applications, and when combined with precision mechanics and drive electronics it <a href=\"https:\/\/vimeo.com\/489960442\">improves alignment accuracy and speed<\/a> to meet the quality and throughput demands of modern photonics manufacturing processes.<\/p><figure class=\"wp-block-embed is-type-video is-provider-vimeo wp-block-embed-vimeo wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Automation for Optical Device Manufacturing and Testing\" src=\"https:\/\/player.vimeo.com\/video\/489960442?dnt=1&amp;app_id=122963\" width=\"500\" height=\"281\" frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture; clipboard-write\"><\/iframe>\n<\/div><\/figure><p>Aerotech\u2019s <a href=\"https:\/\/www.aerotech.com\/product\/aeroscriptplus-advanced-controller-functionality\/\">AeroAlign optical alignment algorithms<\/a> \u2013 which are compatible with any system running on the Automation1 motion control platform \u2013 are purpose-built to solve these complex photonic alignment challenges. The AeroAlign algorithms support a wide variety of kinematic configurations, including <a href=\"https:\/\/www.aerotech.com\/maximizing-optical-alignment-precision-by-choosing-the-correct-positioning-architecture\">serial and parallel kinematic systems<\/a>, and come equipped with a range of configurable parameters to enable optimization for your specific process. Additionally, the AeroAlign algorithms package includes signal simulation functionality that allows users to design and test their process in a virtual environment before performing real-world alignments of physical hardware. More detail on each of the AeroAlign algorithms is provided below.<\/p><h2 class=\"wp-block-heading\"><strong>AeroAlign1D<\/strong><\/h2><p>The AeroAlign1D function illustrated in Figure 1 is used to search along one degree of freedom for a local power peak or a defined power threshold. This algorithm can perform a complete scan of a defined 1D area and return to the point of maximum (or minimum) power, or it can be configured to terminate motion and remain in place upon reaching a user-defined power threshold.<\/p><figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" width=\"600\" height=\"239\" src=\"https:\/\/www.aerotech.com\/wp-content\/uploads\/2024\/10\/AeroAlign1D-GIF.gif\" alt=\"\" class=\"wp-image-44194\" style=\"width:600px;height:auto\"\/><figcaption class=\"wp-element-caption\"><em>Figure 1.&nbsp;Automation1 plot of AeroAlign1D algorithm<\/em><\/figcaption><\/figure><h2 class=\"wp-block-heading\"><strong>AeroAlignSpiral<\/strong><\/h2><p>The AeroAlignSpiral function&nbsp; is used to search along two degrees of freedom for a local power peak or a defined power threshold. As shown in Figure 2, this algorithm can perform a complete scan of a defined circular 2D area and return to the point of maximum (or minimum) power, or it can be configured to terminate motion and remain in place upon reaching a user-defined power threshold.<\/p><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"600\" height=\"528\" src=\"https:\/\/www.aerotech.com\/wp-content\/uploads\/2024\/10\/AeroAlignSpiral-GIF.gif\" alt=\"\" class=\"wp-image-44188\"\/><figcaption class=\"wp-element-caption\"><em>Figure 2. Automation1 plot of AeroAlignSpiral algorithm<\/em><\/figcaption><\/figure><h2 class=\"wp-block-heading\"><strong>AeroAlignDynamic<\/strong><\/h2><p>The AeroAlignDynamic function is used in one of two ways: it can optimize the position of two degrees of freedom to find a power peak, or it can dynamically track the position of an existing peak. AeroAlignDynamic requires an optical signal (first light) to initiate. After first light is identified, AeroAlignDynamic climbs a local power peak and then either stops when a user-defined threshold is reached or continues to track the movement of that peak until the end of a user-defined time period. This is illustrated in Figure 3.<\/p><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"600\" height=\"522\" src=\"https:\/\/www.aerotech.com\/wp-content\/uploads\/2024\/10\/AeroAlignDynamic-GIF.gif\" alt=\"\" class=\"wp-image-44192\"\/><figcaption class=\"wp-element-caption\"><em>Figure 3. Automation1 plot of AeroAlignDynamic algorithm<\/em><\/figcaption><\/figure><h2 class=\"wp-block-heading\"><strong>AeroAlignFast<\/strong><\/h2><p>The AeroAlignFast function, shown in Figure 4, uses an iterative search routine to identify a position where the power signal exceeds a user-defined threshold. This algorithm supports up to six degrees of freedom and can be used in a wide range of kinematic configurations, including across multiple alignment platforms. AeroAlignFast requires an optical signal (first light) to initiate.<\/p><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"600\" height=\"521\" src=\"https:\/\/www.aerotech.com\/wp-content\/uploads\/2024\/10\/AeroAlignFast-GIF.gif\" alt=\"\" class=\"wp-image-44190\"\/><figcaption class=\"wp-element-caption\"><em>Figure 4. Automation1 plot of AeroAlignFast algorithm<\/em><\/figcaption><\/figure><h2 class=\"wp-block-heading\"><strong>Which Algorithm Do I Use?<\/strong><\/h2><p>The AeroAlign optical alignment algorithms address a wide variety of alignment processes in both R&amp;D and high-volume manufacturing environments. Depending on the application goals, alignment tolerances, throughput requirements and other considerations, different algorithms (or combinations of algorithms) may be more suitable for a given process. For example, both AeroAlignDynamic and AeroAlignFast require an optical signal (often called first light) to initiate. If the alignment search is starting without a&nbsp; signal, users can deploy AeroAlign1D or AeroAlignSpiral to establish a signal and then use AeroAlignFast or AeroAlignDynamic to optimize the alignment. The AeroAlign algorithms can even be combined with Tool Center Point Programming (<a href=\"https:\/\/www.aerotech.com\/product\/aeroscriptplus-advanced-controller-functionality\/\">another AeroScriptPlus feature<\/a>) to perform complex alignments of multi-channel arrays that are sensitive to linear and angular positioning. An example of this is shown in Figure 5.<\/p><figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"500\" height=\"281\" src=\"https:\/\/www.aerotech.com\/wp-content\/uploads\/2020\/10\/figure5.gif\" alt=\"\" class=\"wp-image-44268\"\/><figcaption class=\"wp-element-caption\"><em>Figure 5. A <\/em><a href=\"https:\/\/www.aerotech.com\/product\/6-axis-photonics-alignment-system\/\"><em>6-axis photonic alignment system <\/em><\/a><em>executing Tool Center Point Programming.<\/em><\/figcaption><\/figure><p>For more technical details on specific algorithm parameters, use cases and setup procedures, <a href=\"https:\/\/www.aerotech.com\/contact\/\">&nbsp;request the AeroScriptPlus Optical Alignment Setup &amp; Programming Guide<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Precision motion mechanics, such as Aerotech\u2019s FiberMaxHP and other photonic&hellip;<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","_searchwp_excluded":"","footnotes":""},"categories":[963,954,950,945,938,951,939,952,942,944,940],"tags":[],"content_type":[969],"industry":[978,979,980,982],"topic":[993,985,987,990,991],"class_list":["post-4498","post","type-post","status-publish","format-standard","hentry","category-capability-overview","category-custom-engineered-motion-systems","category-hexapods","category-motion-control-platforms","category-optics-photonics","category-piezoelectric-nanopositioners","category-precision-manufacturing","category-process-specific-products","category-science-research","category-stages-actuators","category-test-inspection","content_type-capability-overview","industry-optics-photonics","industry-precision-manufacturing","industry-science-research-institutions","industry-test-inspection","topic-custom-engineered-motion","topic-hexapods","topic-motion-control-platforms","topic-process-specific-products","topic-stages-actuators"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Optical Alignment Algorithms &#8211; Aerotech US<\/title>\n<meta name=\"description\" content=\"The hardware for your precision motion equipment is not the only part of the system to consider for alignment applications. 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