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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">高精度光计算研究取得进展 </h1> <p class="xg1"> 时间：2026-1-9 10:50<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(24)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=10419&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>在人工智能神经网络高速发展的背景下，大规模的矩阵运算与频繁的数据迭代给传统电子处理器带来了巨大压力。光电混合计算通过光学处理与电学处理的协同集成，展现出显著的计算性能，然而实际应用受限于训练与推理环节 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;">在人工智能神经网络高速发展的背景下，大规模的矩阵运算与频繁的数据迭代给传统<a href="http://electronic.oecr.com" target="_blank" class="relatedlink">电子</a>处理器带来了巨大压力。光电混合计算通过光学处理与电学处理的协同集成，展现出显著的计算性能，然而实际应用受限于训练与推理环节分离、离线权重更新等问题，造成信息熵劣化、计算精度下降，导致推理准确度低。</p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;">中国科学院<a href="http://sensor.oecr.com" target="_blank" class="relatedlink">半导体</a>研究所提出了一种基于相位像素阵列的可编程光学处理单元（OPU），并结合李雅普诺夫稳定性<a href="http://theory.oecr.com" target="_blank" class="relatedlink">理论</a>实现了对OPU的灵活编程。在此基础上，团队构建了一种端到端闭环光电混合计算架构（ECA），通过硬件—算法协同设计，实现了训练与推理的全流程闭环优化，有效补偿了信息熵损失，打破了光计算中计算精度与准确度之间的强耦合关系。</p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;">该架构通过噪声自学习机制，实现了光学与电学参数联合优化与自适应计算精度补偿。实验结果表明，采用4-bit的OPU时，ECA在MNIST手写数字识别任务（计算机视觉领域的经典任务）上的推理准确率达到90.8%，接近8-bit传统计算架构（TCA）的理论极限（90.9%），这表明光计算系统在低硬件精度情况下仍能实现高精度推理，为高性能计算架构的设计提供了新思路。</p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;">该OPU支持30.67GBaud/s的运算速率，实现981.3GOPS的计算能力与3.97TOPS/mm<sup style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; margin-bottom: 26px !important; font-size: 16px !important; line-height: 32px !important;">2</sup>的计算密度。理论分析表明，该结构可进一步扩展至128×128规模，计算能力可达1005TOPS，计算密度为4.09TOPS/mm<sup style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; margin-bottom: 26px !important; font-size: 16px !important; line-height: 32px !important;">2</sup>，能效可达37.81fJ/MAC，<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>出其在微波光子信号处理、光<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>与神经形态人工智能等领域的应用潜力。</p><p style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; list-style: none; font-size: 16px; font-family: 微软雅黑; color: rgb(68, 68, 68); background-color: rgb(255, 255, 255); text-indent: 2em; text-align: justify; margin-bottom: 26px !important; line-height: 32px !important;">相关研究成果发表在《先进光子学》（<em style="margin-top: 0px; margin-right: 0px; margin-left: 0px; padding: 0px; border: 0px; margin-bottom: 26px !important; line-height: 32px !important;">Advanced Photonics</em>）上。研究工作得到国家自然科学基金、中国博士后科学基金、中国科学院国际合作计划、北京市自然科学基金等的支持。</p><p style="text-align: center;"><a href="data/attachment/portal/202601/09/105009eg9bb47r3miclgbi.png" target="_blank"><img src="data/attachment/portal/202601/09/105009eg9bb47r3miclgbi.png"></a></p><p style="margin-top: 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<a href="javascript:;" onclick="portal_comment_requote(36610, '10419');">引用</a> </span> <a href="http://club.oecr.com/space-uid-95064.html" class="xi2 xw1" c="1">交探测器朋友</a> <span class="xg1 xw0">2026-1-9 12:51</span> </dt> <dd>科技信息不错。</dd> </dl><a name="comment_anchor_36609"></a> <dl id="comment_36609_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(36609, '10419');">引用</a> </span> <a href="http://club.oecr.com/space-uid-51664.html" class="xi2 xw1" c="1">kelvin</a> <span class="xg1 xw0">2026-1-9 12:21</span> </dt> <dd>光学测量好难啊。</dd> </dl><a name="comment_anchor_36608"></a> <dl id="comment_36608_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(36608, '10419');">引用</a> </span> <a href="http://club.oecr.com/space-uid-52579.html" class="xi2 xw1" c="1">synthia88</a> <span class="xg1 xw0">2026-1-9 11:51</span> </dt> <dd>…… 啥都不说了</dd> </dl><a name="comment_anchor_36607"></a> <dl id="comment_36607_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(36607, '10419');">引用</a> </span> <a href="http://club.oecr.com/space-uid-57792.html" class="xi2 xw1" c="1">idealoptics</a> <span class="xg1 xw0">2026-1-9 11:20</span> </dt> <dd>告诉大家首页签到可以刷分啊</dd> </dl><a name="comment_anchor_36606"></a> <dl id="comment_36606_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(36606, '10419');">引用</a> </span> <a href="http://club.oecr.com/space-uid-106505.html" class="xi2 xw1" c="1">lmff</a> <span class="xg1 xw0">2026-1-9 10:50</span> </dt> <dd>占坑ing</dd> </dl></div> </div> <!--[diy=diycontentcomment]--><div id="diycontentcomment" class="area"></div><!--[/diy]--> </div> <div class="sd pph"> <div class="drag"> <!--[diy=diyrighttop]--><div id="diyrighttop" class="area"><div id="frameZRVHza" class="sy_ltdr 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