{"id":53402,"date":"2021-03-15T18:54:20","date_gmt":"2021-03-15T18:54:20","guid":{"rendered":"\/forum\/forums\/topic\/ansys-insight-mode-%e5%88%9d%e5%ad%a6%e8%80%85%ef%bc%9a%e5%85%b3%e4%ba%8evarfdtd%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86%e9%97%ae%e9%a2%98\/"},"modified":"2022-11-29T22:58:06","modified_gmt":"2022-11-29T22:58:06","slug":"ansys-insight-mode-chuxuezheguanyuvarfdtddegongzuoyuanliwenti","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/ansys-insight-mode-chuxuezheguanyuvarfdtddegongzuoyuanliwenti\/","title":{"rendered":"Ansys Insight: MODE \u521d\u5b66\u8005\uff1a\u5173\u4e8evarFDTD\u7684\u5de5\u4f5c\u539f\u7406\u95ee\u9898"},"content":{"rendered":"
\n
varFDTD\u91cc\u9762\u6709\u4e24\u4e2a\u76f8\u5173\u7684\u8bbe\u7f6e\uff0c\u4e00\u4e2a\u662fEffective index\u91cc\u9762\u7684 polarization,\u53e6\u4e00\u4e2a\u662f\u6a21\u5f0f\u5149\u6e90\u91cc\u9762\u7684\u6a21\u5f0f\u3002\u8fd9\u4e24\u4e2a\u6a21\u5f0f\u6709\u4ec0\u4e48\u8054\u7cfb\uff1f\u5176\u5de5\u4f5c\u539f\u7406\u5e94\u8be5\u5982\u4f55\u7406\u89e3\uff1f\u4e3a\u4ec0\u4e48\u6709\u65f6\u95f4\u5728\u5149\u6e90\u91cc\u9009Fundamental Mode\u53cd\u800c\u4e0d\u6b63\u786e\u5462\uff1f MODE \u8f6f\u4ef6\u662f\u4e00\u6b3e\u8bbe\u8ba1\u3001\u5206\u6790\u3001\u4f18\u5316\u6ce2\u5bfc\u7ed3\u6784\u7684\u4f18\u79c0\u5de5\u5177\uff0c\u5b83\u542b\u6709\u4e09\u4e2a\u4e0d\u540c\u7684\u8ba1\u7b97\u5f15\u64ce\uff0c\u5373Solver\u3002\u6bcf\u4e2aSolver\u90fd\u6709\u4e00\u4e2a\u4e13\u95e8\u7684\u4e2d\u6587\u89c6\u9891\uff0c\u8bf7\u5230\u5b98\u7f51\u4e2d\u6587\u89c6\u9891\u7f51\u9875 <\/a>\u5bdf\u770b\uff08\u51714\u4e2a\u89c6\u9891\uff0c\u7b2c\u4e00\u4e2a\u662f\u7b80\u4ecb\uff0c\u82f1\u8bed\uff0c\u5176\u4f59\u662f\u4e2d\u6587\uff09\u3002 \u4f18\u9177\u7f51\u89c6\u9891 Lumerical\u5b98\u65b9Webinar\uff1aMODE Solutions\u7b80\u4ecb\u4e0e\u521d\u7ea7\u6559\u7a0b 1<\/a> [MODE Solutions varFDTD\u64cd\u4f5c\u5b9e\u4f8b\u6f14\u793a] (http:\/\/v.youku.com\/v_show\/id_XMTU0MjQ5MDEwNA==.html?from=y1.2-1-87.3.4-1.1-1-1-3-0 150<\/a>) varFDTD\u4e3b\u8981\u7528\u6765\u4eff\u771f\u5e73\u9762\u6ce2\u5bfc\u7c7b\u5668\u4ef6\uff0c\u5176\u5de5\u4f5c\u539f\u7406\u53c2\u89c1\u8fd9\u91cc <\/a>\u3002\u4e3a\u4e86\u65b9\u4fbf\u5927\u5bb6\uff0c\u6211\u5c06\u6570\u5b66\u539f\u7406\u8d34\u5230\u8fd9\u91cc\uff1a<\/div>\n
\u7b2c\u4e00\u79cd\u662f\u53d8\u5206\u6cd5(\u6700\u5e38\u7528\uff09\uff0c\u5c062D\u6a21\u5f0f\u5206\u89e3\u4e3a\u4e24\u4e2a1D\uff0c\u76f4\u63a5\u7b80\u5316\u9ea6\u514b\u65af\u97e6\u65b9\u7a0b\u6c42\u89e3\u3002\u8ba1\u7b97\u5176\u7b49\u6548\u6298\u5c04\u7387\u7684\u65b9\u6cd5\u662f<\/p>\n
 <\/div>\n
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<\/a>\"image.png\"<\/a><\/div>\n
\u7b2c\u4e8c\u79cd\u65b9\u6cd5\uff0c\u4e92\u9006\u6cd5\uff0c Sneider \u548cLove\u4e66\u91cc\u7684\u65b9\u6cd5\u3002<\/div>\n
\n

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\u8fd9\u79cd\u65b9\u6cd5\u662f\u4e3a\u4e86\u5feb\u901f\u4eff\u771f\u6b64\u7c7b\u7ed3\u6784\uff0c\u56e0\u4e3a\u76f8\u5bf9\uff13\uff24\uff26\uff24\uff34\uff24\uff0c\u5176\u901f\u5ea6\u53ef\u80fd\u5feb \u51e0\u5341\u5230\u4e0a\u767e\u500d <\/a> \u3002<\/p>\n

\u8fd9\u79cd\u65b9\u6cd5\u5b9e\u9645\u4e0a\u5c31\u662f\u7b49\u6548\u6298\u5c04\u7387\u65b9\u6cd5\u7684\u4e00\u79cd\u3002\u57fa\u672c\u539f\u7406\u662f\uff0c\u6309\u7167\u67d0\u79cd\u65b9\u6cd5\u5c06\u4eff\u771f\u533a\uff3a\u65b9\u5411\u5404\u70b9\u5904\u7684\u7b49\u6548\u6298\u5c04\u7387\u8ba1\u7b97\u51fa\u6765\uff0c\u7136\u540e\u7528\u8fd9\u4e2a\u7b49\u6548\u6298\u5c04\u7387\u7684\u5206\u5e03\u505a\u4e8c\u7ef4\u4eff\u771f\uff08\uff38\uff39\u5e73\u9762\uff09\u3002<\/p>\n

Lumerical \u7ed9\u51fa\u4e86\u4e24\u79cd\u65b9\u6cd5\uff0c\u4e00\u79cd\u662f\u53d8\u5206\u6cd5\uff08Variational\uff09\uff0c\u53e6\u4e00\u79cd\u662f\u4e92\u6613\u6cd5\uff08Reciprocity based\uff09\u3002\u8f6f\u4ef6\u9996\u5148\u8ba1\u7b97\uff3a\u65b9\u5411\u4e00\u7ef4\u6ce2\u5bfc\uff08z slab\uff09\u7684\u6a21\u5f0f\uff0c\u7136\u540e\u5229\u7528\u5176\u6a21\u5f0f\u8ba1\u7b97\u4efb\u610f\u4e00\u70b9\u7684\u7b49\u6548\u6298\u5c04\u7387\uff08 \u53c2\u89c1\u8fd9\u91cc <\/a> \uff09\u3002\u6b64\u65f6\u5c31\u5c06\uff13\uff24\u5668\u4ef6\u7b49\u6548\u4e3a2D\uff0c\u7136\u540e\u518d\u75282D FDTD \u4eff\u771f\u3002<\/p>\n

**\u5982\u4f55\u4f7f\u7528\uff1f**\u6709\u4e24\u4e2a\u76f8\u5173\u7684\u8bbe\u7f6e\uff1a
\uff11\uff1avarFDTD\u91cc\u7684Effective index\uff0c\u9009\u62e9polarization\uff0c\u5c31\u662f\u7528\u5b9e\u9645\u6750\u6599\u7684\u6298\u5c04\u7387\u8ba1\u7b97Z\u65b9\u5411\u4e00\u7ef4\u6ce2\u5bfc\uff08z slab\uff09\u7684\u6a21\u5f0f\uff0c\u9009\u62e9\u5408\u9002\u7684\u6a21\u5f0f\u540e\uff0c\u5149\u6e90\u7684\u504f\u632f\u5c31\u5df2\u7ecf\u5b9a\u4e86\u3002\u56e0\u6b64\uff0c\u90a3\u4e2a\u7eff\u8272\u7684\u70b9\uff08\u7ebf\uff09\u5fc5\u987b\u4f4d\u4e8e\u6ce2\u5bfc\u82af\u91cc\uff1b\u8f6f\u4ef6\u63d0\u4f9b\u4e86\uff15\u4e2a\u7f3a\u7701\u7684\u76d1\u6d4b\u70b9\u53ef\u67e5\u770b\u4e0d\u540c\u4f4d\u7f6e\u7684\u7b49\u6548\u6298\u5c04\u7387\u3002\u5176\u4e2d\u4e00\u4e2a\u70b9\u5728\u6ce2\u5bfc\u82af\u91cc\uff0c\u8ba1\u7b97\u7684\u7ed3\u679c\u5c31\u662f\u5176\u6709\u6548\u6298\u5c04\u7387\uff4e\uff45\uff46\uff46\u3002 \u5176\u5b83\u4f4d\u7f6e\u7528\u6237\u53ef\u4ee5\u8c03\u6574\uff0c\u5e76\u4e14\u53ef\u4ee5\u5728Material explorer \u91cc\u9762\u67e5\u770b\u3002\u6839\u636e\u662f\u7a84\u8c31\u6bb5\u8fd8\u662f\u5bbd\u8c31\u6bb5\uff08\u89c1\u540e\uff09\uff0c\u53ef\u770b\u5230\u6052\u5b9a\u7684\u6216\u8005\u8272\u6563\u7684\u7b49\u6548\u6298\u5c04\u7387\u3002\u5bf9\u4e8e\u540e\u8005\uff0c\u5982\u679c\u62df\u5408\u4e0d\u597d\u7684\u8bdd\uff0c\u53ef\u4ee5\u8c03\u6574\u62df\u5408\u7279\u6027\u3002<\/p>\n

\uff12\uff1a\u83b7\u5f972D\u7684\u7b49\u6548\u6298\u5c04\u7387\u540e\uff0c\u6dfb\u52a0\u6a21\u5f0f\u5149\u6e90\u3002\u4e00\u822c\u5efa\u8bae\u7528\u7f3a\u7701\u7684\u8bbe\u7f6e\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u627e\u5408\u9002\u7684\u6a21\u5f0f\u3002\u7528\u6237\u81ea\u9009\u6709\u65f6\u53ef\u80fd\u51fa\u9519\uff0c\u89c1\u540e\u3002\u8fd9\u4e2a\u6a21\u5f0f\u662f\u7528\u7b49\u6548\u6298\u5c04\u7387\u8ba1\u7b97\u7684\uff0c\u4e0d\u662f\u6750\u6599\u6298\u5c04\u7387\u3002<\/p>\n

\u4e24\u79cd\u7b97\u6cd5\u5982\u4f55\u9009\u62e9\uff1f <\/strong>
\u4e00\u822c\u5efa\u8bae\u9009\u5176\u4e2d\u4e00\u79cd\uff0c\u4f8b\u5982variational\u3002 \u5982\u679c\u613f\u610f\uff0c\u4e5f\u53ef\u4ee5\u662f\u7528\u53e6\u4e00\u79cd\u65b9\u6cd5\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u8fd9\u4e24\u79cd\u7b97\u6cd5\u76f8\u5bf9\u4e8e\uff13DFDTD\u7684\u7cbe\u5ea6\u76f8\u5f53\uff0c\u4e00\u4e2a\u6b63\uff0c\u53e6\u4e00\u4e2a\u53ef\u80fd\u662f\u8d1f\u8bef\u5dee\u3002<\/p>\n

\u5230\u5e95\u9009\u7528\u7a84\u8c31\u6bb5\u8fd8\u662f\u5bbd\u8c31\u6bb5\uff1f <\/strong>
\u4e0d\u7ba1\u662f\u54ea\u79cd\u7b97\u6cd5\uff0csimulation bandwidth \u91cc\u9762\u6709narrowband \u548c broadband\u4e24\u79cd\u9009\u62e9\u3002\u5982\u679c\u4eff\u771f\u7684\u5149\u8c31\u8303\u56f4\u76f8\u5bf9\u8f83\u5bbd\uff0c\u5efa\u8bae\u7528broadband\u3002<\/p>\n

\u5982\u4f55\u754c\u5b9a\u5bbd\u7a84\u5462\uff1f\u53ef\u4ee5\u67e5\u770b\u4eff\u771f\u8c31\u6bb5\u4e24\u4fa7\u7684\u6ce2\u957f\uff0c\u770b\u770b\u5b83\u4eec\u7684\u6a21\u5f0f\u7279\u6027\u53d8\u5316\u662f\u5426\u53ef\u4ee5\u63a5\u53d7\uff1f\u56e0\u4e3a\u7b49\u6548\u6298\u5c04\u7387\u662f\u7528\u4e2d\u5fc3\u9891\u7387\u5bf9\u5e94\u7684\u6a21\u5f0f\u8ba1\u7b97\u7684\uff0c\u5982\u679c\u4e24\u4fa7\u7684\u6a21\u5f0f\u4e0e\u4e2d\u5fc3\u9891\u7387\u7684\u6a21\u5f0f\u5dee\u522b\u5927\uff0c\u53ef\u4ee5\u7528\u5bbd\u5149\u8c31\u3002\u5982\u679c\u8981\u8fdb\u4e00\u6b65\u754c\u5b9a\u8fd9\u79cd\u8bef\u5dee\uff0c\u53ef\u4ee5\u4eff\u771f\u8fd9\u4e24\u4e2a\u9891\u7387\u5e76\u4e0e\u7528\u4e2d\u5fc3\u9891\u7387\u6a21\u5f0f\u8ba1\u7b97\u7684\u7ed3\u679c\u6bd4\u8f83\uff0c\u5982\u679c\u7cbe\u5ea6\u53ef\u4ee5\u63a5\u53d7\u5c31\u7528\u7a84\u5149\u8c31\uff0c\u5426\u5219\u7528\u5bbd\u5149\u8c31\u3002<\/p>\n

\u7528\u6237\u81ea\u9009\u65f6\u4e3a\u4f55\u4f1a\u9009\u5230\u9519\u8bef\u7684\u6a21\u5f0f\uff1f <\/strong>
\u6839\u636e\u524d\u9762\u63cf\u8ff0\uff0c\u672c\u65b9\u6cd5\u5c062\uff24\u6ce2\u5bfc\u7b49\u6548\u4e3a\u4e24\u4e2a1D\u6ce2\u5bfc\u3002\u5728\u538b\u7f29\u4e3a2D\u540e\uff0c\u6ce2\u5bfc\u6210\u4e3a1D\uff08\u6ce2\u5bfc\u6cbfx\u6216\u8005y\uff09\uff0c\u5b83\u53ef\u80fd\u652f\u6301\uff12\uff24\u6ce2\u5bfc\u4e2d\u6ca1\u6709\u7684\u6a21\u5f0f\u3002\u8981\u9632\u6b62\u51fa\u9519\uff0c\u7528\u6237\u53ef\u4ee5\u5728\uff30\uff4f\uff4c\uff41\uff52\uff49\uff5a\uff41\uff49\uff54\uff4f\uff4e\u90a3\u91cc\u67e5\u770b\u6240\u9009\uff3a\uff33\uff4c\uff41\uff42\u6a21\u5f0f\u7684\u4e3b\u5206\u91cf\uff0c\u662fEy\u8fd8\u662fEz\uff08\u5047\u8bbe\u6ce2\u5bfc\u6cbfx\uff09\u3002\u7136\u540e\u5728\u5149\u6e90\u91cc\u4e5f\u9009\u76f8\u5e94\u7684\u4e3b\u5206\u91cf\u3002<\/p>\n

\u90a3\u4e9b\u5668\u4ef6\u9002\u5408\u7528\u6b64\u65b9\u6cd5\u4eff\u771f\uff1f <\/strong>
\u4e00\u822c\u7684\u5e73\u9762\u578b\u6ce2\u5bfc\u5668\u4ef6\uff0c\u53ef\u4ee5\u53c2\u89c1\u8fd9\u4e2a \u767d\u76ae\u4e66 <\/a> \u3002
\u539f\u5219\u4e0a\u8bf4\uff0c\u5373\u4f7f\uff3a\u65b9\u5411\u7684\u7ed3\u6784\u4e0d\u662f\u76f8\u540c\u7684\u539a\u5ea6\uff0c\u4f8b\u5982\u5728Z\u65b9\u5411\u6ce2\u5bfc\u82af\u7684\u539a\u5ea6\u6709\u5fae\u5c0f\u53d8\u5316\uff08\u5982Taper\uff0c\u6216\u8005\u4e00\u4e9b\u5149\u6805\u7b49\uff09\u4e5f\u662f\u53ef\u4ee5\u7684\uff0c\u8f6f\u4ef6\u5141\u8bb8\u7528\u6237\u76d1\u6d4b\u4e0d\u540c\u9ad8\u5ea6\u7684\u7b49\u6548\u6298\u5c04\u7387\u3002\u4f8b\u5982\uff0c\u8fd9\u7bc7\u6587\u732e\uff1a Manfred Hammer and Olena V. Ivanova, MESA Institute for Nanotechnology, University of Twente, Enschede, The Netherlands
“Effective index approximation of photonic crystal slabs: a 2-to-1-D assessment”, Optical and Quantum Electronics ,Volume 41, Number 4, 267-283, DOI: 10.1007\/s11082-009-9349-3
\u4ee5\u53ca\u8fd9\u7bc7\u6587\u7ae0 On effective index approximations of photonic crystal slabs <\/a><\/p>\n

\u7528\u6b64\u65b9\u6cd5\u5bf9\u6df1\u5ea6\u523b\u8680\u7684\u5149\u6805\u4f5c\u4eff\u771f\u7ed3\u679c\u975e\u5e38\u597d\u3002<\/p>\n

\u90a3\u4e9b\u5668\u4ef6\u4e0d\u9002\u5408\u7528\u6b64\u65b9\u6cd5\u4eff\u771f\uff1f <\/strong>
\u5982\u679c\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\uff0c\u504f\u632f\u6709\u53d8\u5316\uff0c\u6216\u8005\u6a21\u5f0f\u5728Z\u65b9\u5411\u6709\u8026\u5408\uff0c\u4f8b\u5982 Spot size converter <\/a> \u3001 Polarization converter <\/a> \u5219\u4e0d\u5408\u9002\uff0c\u56e0\u4e3a\u8f93\u5165\u7aef\u548c\u8f93\u51fa\u7aef\u7684\u504f\u632f\u7279\u6027\u53d1\u751f\u4e86\u6839\u672c\u6027\u6539\u53d8\uff0c \u53c2\u89c1\u8fd9\u4e2a\u56de\u590d <\/a> \u3002
\u540c\u7406\uff0c \u5149\u6805\u8026\u5408\u5668 <\/a> \u4e5f\u4e0d\u9002\u5408\u3002<\/p>\n

\u5176\u6b21\uff0c\u5982\u679c\u5176\u5b83\u65b9\u6cd5\u66f4\u5408\u9002\uff0c\u5c31\u6ca1\u6709\u5fc5\u8981\u7528\u6b64\u65b9\u6cd5\uff0c\u4f8b\u5982 Polarization rotator <\/a> \u7528EME\u66f4\u5408\u9002\u3002<\/p>\n

\u5f53\u7136\uff0c\u5149\u7ea4\u7c7b\u5668\u4ef6\u4e00\u822c\u4e0d\u9002\u5408\uff0c \u53c2\u89c1\u8fd9\u4e2a\u56de\u590d <\/a> \u3002<\/p>\n

\u5982\u679c\u62ff\u4e0d\u51c6\u80fd\u5426\u4f7f\u7528\uff0c\u53ef\u4ee5\u4e0e\u5176\u5b83\u65b9\u6cd5\u6bd4\u8f83\u7ed3\u679c\u3001\u6216\u8005\u8054\u7cfb\u6211\u4eec\u3002<\/p>\n

\u5165\u95e8\u6559\u7a0b <\/strong>
\u53ef\u4ee5\u53c2\u770b \u8fd9\u4e2a\u7f51\u9875 <\/a> \u5b66\u4e60\u4e00\u4e9b\u4f8b\u5b50\u3002<\/p>\n

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