{"id":52829,"date":"2021-03-03T19:26:34","date_gmt":"2021-03-03T19:26:34","guid":{"rendered":"\/forum\/forums\/topic\/ansys-insight-fdtd-%e5%a6%82%e4%bd%95%e8%ae%be%e7%bd%ae%e5%9c%86%e5%81%8f%e6%8c%af%e5%85%89\/"},"modified":"2023-09-20T18:47:35","modified_gmt":"2023-09-20T18:47:35","slug":"ansys-insight-fdtd-ruheshezhiyuanpianzhenguang","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-insight-fdtd-ruheshezhiyuanpianzhenguang\/","title":{"rendered":"Ansys Insight: FDTD \u5982\u4f55\u8bbe\u7f6e\u5706\u504f\u632f\u5149"},"content":{"rendered":"
\n
FDTD \u7f3a\u7701\u7684\u5e73\u9762\u6ce2\u548cTFSF\u5149\u6e90\u90fd\u662f\u7ebf\u504f\u632f\uff0c\u8981\u5f97\u5230\u5706\u504f\u632f\u632f\u5149\u7ed3\u679c\uff0c\u6709[\u4e24\u79cd\u65b9\u6cd5]\uff0c\u90fd\u662f\u6839\u636e\u5b9a\u4e49\u6765\u8bbe\u7f6e\u7684\uff0c\u5982\u679c\u4e0d\u719f\u6089\uff0c\u8bf7\u5148\u627e\u53c2\u8003\u4e66\u770b\u4e00\u4e0b\u5b9a\u4e49\u548c\u89e3\u91ca (https:\/\/kb.lumerical.com\/en\/index.html?ref_sim_obj_planewave_circular_polarization.html 539<\/a> )\uff1a <\/p>\n

1\uff1a\u4e00\u4e2a\u4eff\u771f\u6587\u4ef6\u53cc\u5149\u6e90<\/strong> <\/p>\n

\u76f4\u63a5\u5728\u4eff\u771f\u533a\u6dfb\u52a0 \u4e24\u4e2a\u4f4d\u7f6e\u76f8\u540c<\/strong>\u3001\u504f\u632f\u5782\u76f4<\/strong>\u3001\u4e14\u4f4d\u76f8\u76f8\u5dee90\u5ea6<\/strong>\u7684\u4e24\u4e2a\u7ebf\u504f\u632f\u5149\u6e90\u3002\u4f8b\u5982\u6cbfZ\u8f74\u5165\u5c04\uff0c\u5219\u5e94\u6dfb\u52a0\u6cbfX\u548cY\u7684\u7ebf\u504f\u632f\u5149\uff0c\u5e76\u4e14 <\/p>\n

phase(Ex) = 0 <\/p>\n

phase(Ey) = +\uff08-\uff0990 <\/p>\n

\u8fd9\u91cc\uff0c± \u5c06\u53d6\u51b3\u4e8e\u4f60\u5982\u4f55\u5b9a\u4e49\u5de6\u65cb\u548c\u53f3\u65cb\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6211\u4eec\u8f6f\u4ef6\u7684\u7a7a\u95f4\u4f4d\u76f8\u662fphase(Ex) = +kz\u3002 <\/p>\n

\u4f18\u70b9\uff1a\u53ea\u9700\u8981\u4e00\u6b21\u4eff\u771f\uff1b <\/p>\n

\u7f3a\u70b9\uff1a\u53ea\u80fd\u662f\u5706\u504f\u5149\uff0c\u4e0d\u80fd\u662f\u4efb\u610f\u7684\u692d\u5706\u504f\u5149\uff1b\u4eff\u771f\u65f6\u4e0d\u80fd\u4f7f\u7528\u5bf9\u79f0\u6027\u8fb9\u754c\u6761\u4ef6\u3002 <\/p>\n

2\uff1a\u53cc\u4eff\u771f\u6587\u4ef6\u5355\u5149\u6e90<\/strong> <\/p>\n

\u8bbe\u7f6e\u4e24\u4e2a\u76f8\u540c\u7684\u6587\u4ef6\uff0c\u53ea\u662f\u5149\u6e90\u504f\u632f\u6b63\u4ea4\u3002\u5373 <\/p>\n

phase(Ex) = 0 <\/p>\n

phase(Ey) = 0 <\/p>\n

\u5206\u522b\u4eff\u771f\uff0c\u7136\u540e\u5229\u7528\u811a\u672c\u5c06\u4e24\u4e2a\u4eff\u771f\u7ed3\u679c\u7684\u573a<\/strong>\u76f8\u52a0\uff1a\u4f8b\u5982 <\/p>\n

Ex=Ex1+a e^{+(-)1i*pi\/2}*Ex2 <\/p>\n

\u8fd9\u91cca=1 \u662f\u5706\u504f\u632f\u5149\uff0ca\u4e0d\u7b49\u4e8e1\u662f\u692d\u5706\u504f\u632f\u5149\u3002\u4f4d\u76f8\u7684\u6b63\u8d1f\u540c\u524d\u3002\u81f3\u4e8e\u662f\u6b63\u8fd8\u662f\u8d1f\uff0c\u9700\u8981\u7528\u6237\u6839\u636e\u81ea\u5df1\u7684\u5de6\u53f3\u65cb\u5b9a\u4e49\u51b3\u5b9a\uff0cLumerial\u4f7f\u7528EXP\uff08-jwt) \u53c2\u89c1 FDTD\u4e2d\u9ea6\u514b\u65af\u97e6\u65b9\u7a0b\u7684\u590d\u6570\u5f62\u5f0f\u8868\u793a\u662f\u7528\u7684e^jwt\u8fd8\u662fe^-jwt <\/a> <\/p>\n

\u6b64\u65b9\u6cd5\u9002\u5408\u692d\u5706\u548c\u5706\u504f\u632f\u5149\uff0c\u4f46\u662f\u9700\u8981\u811a\u672c\uff0c\u900f\u5c04\u7387\u7b49\u5176\u5b83\u5f3a\u5ea6\u53c2\u6570\u90fd\u9700\u8981\u91cd\u65b0\u8ba1\u7b97\u3002 <\/p>\n

\u4f18\u70b9\uff1a\u53ef\u5206\u522b\u7528\u4e0d\u540c\u7684\u5bf9\u79f0\u6027\u8fb9\u754c\u6761\u4ef6\u4ee5\u51cf\u5c11\u5185\u5b58\u9700\u6c42\u548c\u52a0\u5feb\u4eff\u771f\uff1b <\/p>\n

\u5176\u6b21\uff0c\u4ec5\u9700\u8981\u4e24\u6b21\u4eff\u771f\uff0c\u901a\u8fc7\u540e\u7eed\u5904\u7406\uff0c\u53ef\u4ee5\u5f97\u5230\u4efb\u610f\u7684\u692d\u5706\u504f\u632f\uff0c\u4ee5\u53ca\u4e0d\u540c\u65cb\u5411\uff08\u5de6\u3001\u53f3\uff09\u7684\u7ed3\u679c\u3002 <\/p>\n

\u524d\u8ff0\u4e24\u79cd\u65b9\u6cd5\u9002\u5408\u5e73\u9762\u6ce2\u3001TFSF\u548c\u9ad8\u65af\u5149\u6e90\u3002<\/p><\/div>\n

 <\/div>\n
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