{"id":209245,"date":"2024-03-21T14:06:51","date_gmt":"2024-03-21T14:06:51","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%83%95%e3%82%a1%e3%82%a4%e3%83%90%e3%83%bc%e3%82%aa%e3%83%97%e3%83%86%e3%82%a3%e3%82%af%e3%82%b9-%e5%8e%9f%e7%90%86%e3%81%a8%e5%bf%9c%e7%94%a8%e3%81%ae%e8%a7%a3%e8%aa%ac\/"},"modified":"2024-05-17T15:09:28","modified_gmt":"2024-05-17T15:09:28","slug":"%e3%83%95%e3%82%a1%e3%82%a4%e3%83%90%e3%83%bc%e3%82%aa%e3%83%97%e3%83%86%e3%82%a3%e3%82%af%e3%82%b9-%e5%8e%9f%e7%90%86%e3%81%a8%e5%bf%9c%e7%94%a8%e3%81%ae%e8%a7%a3%e8%aa%ac","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%83%95%e3%82%a1%e3%82%a4%e3%83%90%e3%83%bc%e3%82%aa%e3%83%97%e3%83%86%e3%82%a3%e3%82%af%e3%82%b9-%e5%8e%9f%e7%90%86%e3%81%a8%e5%bf%9c%e7%94%a8%e3%81%ae%e8%a7%a3%e8%aa%ac\/","title":{"rendered":"\u30d5\u30a1\u30a4\u30d0\u30fc\u30aa\u30d7\u30c6\u30a3\u30af\u30b9 | \u539f\u7406\u3068\u5fdc\u7528\u306e\u89e3\u8aac"},"content":{"rendered":"

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u539f\u7406\u3068\u5fdc\u7528\u306b\u3064\u3044\u3066\u89e3\u8aac\u3002\u5168\u53cd\u5c04\u306e\u539f\u7406\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u69cb\u9020\u3001\u7a2e\u985e\u3001\u901a\u4fe1\u3001\u533b\u7642\u3001\u7523\u696d\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3078\u306e\u5fdc\u7528\u3092\u7db2\u7f85\u3002<\/p>\n

\u30d5\u30a1\u30a4\u30d0\u30fc\u30aa\u30d7\u30c6\u30a3\u30af\u30b9 | \u539f\u7406\u3068\u5fdc\u7528\u306e\u89e3\u8aac<\/h2>\n

\u30d5\u30a1\u30a4\u30d0\u30fc\u30aa\u30d7\u30c6\u30a3\u30af\u30b9\u3001\u3064\u307e\u308a\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u901a\u4fe1\u306f\u3001\u73fe\u4ee3\u306e\u901a\u4fe1\u6280\u8853\u306e\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002\u3053\u306e\u6280\u8853\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3001\u30c6\u30ec\u30d3\u3001\u96fb\u8a71\u306e\u30c7\u30fc\u30bf\u4f1d\u9001\u306b\u5e83\u304f\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30d5\u30a1\u30a4\u30d0\u30fc\u30aa\u30d7\u30c6\u30a3\u30af\u30b9\u306e\u57fa\u672c\u7684\u306a\u539f\u7406\u3068\u3001\u305d\u306e\u5fdc\u7528\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u57fa\u672c\u539f\u7406<\/h2>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306f\u3001\u5149\u3092\u30ac\u30e9\u30b9\u3084\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u306e\u7d30\u3044\u7dda\u3092\u901a\u3057\u3066\u9060\u65b9\u307e\u3067\u4f1d\u9001\u3059\u308b\u305f\u3081\u306e\u6280\u8853\u3067\u3059\u3002\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u5185\u3067\u5149\u304c\u3069\u306e\u3088\u3046\u306b\u52d5\u4f5c\u3059\u308b\u306e\u304b\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u3001\u307e\u305a\u300c\u5168\u53cd\u5c04\uff08Total Internal Reflection\uff09\u300d\u306e\u539f\u7406\u3092\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u5168\u53cd\u5c04\u306e\u539f\u7406<\/h3>\n

\u5168\u53cd\u5c04\u3068\u306f\u3001\u5149\u304c\u9ad8\u5c48\u6298\u7387\u306e\u5a92\u8cea\u304b\u3089\u4f4e\u5c48\u6298\u7387\u306e\u5a92\u8cea\u3078\u9032\u3080\u3068\u304d\u306b\u3001\u4e00\u5b9a\u306e\u89d2\u5ea6\u4ee5\u4e0a\u3067\u5165\u5c04\u3059\u308b\u3068\u3001\u5149\u304c\u5b8c\u5168\u306b\u53cd\u5c04\u3055\u308c\u308b\u73fe\u8c61\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u5185\u3067\u5149\u304c\u52b9\u7387\u3088\u304f\u4f1d\u9001\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u6570\u5b66\u7684\u306b\u306f\u3001\u30b9\u30cd\u30eb\u306e\u6cd5\u5247\u3092\u7528\u3044\u3066\u8aac\u660e\u3055\u308c\u307e\u3059\uff1a<\/p>\n

\\[
\nn_1 \\sin(\\theta_1) = n_2 \\sin(\\theta_2)
\n\\]<\/p>\n

\u3053\u3053\u3067\u3001\\(n_1\\) \u3068 \\(n_2\\) \u306f\u305d\u308c\u305e\u308c\u5a92\u8cea1\u3068\u5a92\u8cea2\u306e\u5c48\u6298\u7387\u3001\\(\\theta_1\\) \u3068 \\(\\theta_2\\) \u306f\u5165\u5c04\u89d2\u3068\u5c48\u6298\u89d2\u3067\u3059\u3002<\/p>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u69cb\u9020<\/h2>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306f\u4e3b\u306b3\u3064\u306e\u90e8\u5206\u304b\u3089\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n

1. **\u30b3\u30a2\uff08Core\uff09**\uff1a\u5149\u304c\u901a\u904e\u3059\u308b\u4e2d\u5fc3\u90e8\u5206\u3002\u9ad8\u5c48\u6298\u7387\u306e\u6750\u6599\u3067\u4f5c\u3089\u308c\u3066\u3044\u307e\u3059\u3002
\n2. **\u30af\u30e9\u30c3\u30c9\uff08Cladding\uff09**\uff1a\u30b3\u30a2\u3092\u53d6\u308a\u56f2\u3080\u90e8\u5206\u3002\u30af\u30e9\u30c3\u30c9\u306f\u30b3\u30a2\u3088\u308a\u4f4e\u3044\u5c48\u6298\u7387\u3092\u6301\u3061\u3001\u5168\u53cd\u5c04\u3092\u5229\u7528\u3057\u3066\u5149\u4fe1\u53f7\u3092\u4fdd\u6301\u3057\u307e\u3059\u3002
\n3. **\u4fdd\u8b77\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\uff08Protective Coating\uff09**\uff1a\u5916\u90e8\u74b0\u5883\u304b\u3089\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306e\u5c64\u3002<\/p>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u7a2e\u985e<\/h2>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306b\u306f\u3001\u4e3b\u306b\u4ee5\u4e0b\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n

1. **\u30b7\u30f3\u30b0\u30eb\u30e2\u30fc\u30c9\u30d5\u30a1\u30a4\u30d0\u30fc\uff08Single-mode Fiber, SMF\uff09**\uff1a1\u672c\u306e\u7d30\u3044\u30b3\u30a2\u3067\u5149\u3092\u4f1d\u9001\u3057\u3001\u9577\u8ddd\u96e2\u901a\u4fe1\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002
\n2. **\u30de\u30eb\u30c1\u30e2\u30fc\u30c9\u30d5\u30a1\u30a4\u30d0\u30fc\uff08Multi-mode Fiber, MMF\uff09**\uff1a\u592a\u3044\u30b3\u30a2\u3092\u6301\u3061\u3001\u8907\u6570\u306e\u5149\u30e2\u30fc\u30c9\u3092\u540c\u6642\u306b\u4f1d\u9001\u3067\u304d\u307e\u3059\u3002\u77ed\u8ddd\u96e2\u901a\u4fe1\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u5fdc\u7528<\/h2>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u5fdc\u7528\u306f\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4ee3\u8868\u7684\u306a\u3082\u306e\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n

\u901a\u4fe1<\/h3>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306f\u3001\u9ad8\u901f\u30fb\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u4f1d\u9001\u3092\u53ef\u80fd\u306b\u3059\u308b\u305f\u3081\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3084\u96fb\u8a71\u3001\u30b1\u30fc\u30d6\u30eb\u30c6\u30ec\u30d3\u306a\u3069\u591a\u304f\u306e\u901a\u4fe1\u624b\u6bb5\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u901a\u4fe1\u306f\u3001\u96fb\u78c1\u5e72\u6e09\uff08EMI\uff09\u3092\u53d7\u3051\u306b\u304f\u304f\u3001\u4fe1\u53f7\u6e1b\u8870\u3082\u5c11\u306a\u3044\u305f\u3081\u3001\u9ad8\u54c1\u8cea\u306a\u901a\u4fe1\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n

\u533b\u7642<\/h3>\n

\u5185\u8996\u93e1\u306a\u3069\u306e\u533b\u7642\u6a5f\u5668\u3067\u306f\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u3092\u7528\u3044\u3066\u4f53\u5185\u306e\u6620\u50cf\u3092\u5916\u90e8\u306b\u4f1d\u9001\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u60a3\u8005\u306e\u4f53\u5185\u306e\u8a73\u7d30\u306a\u6620\u50cf\u3092\u78ba\u8a8d\u3057\u306a\u304c\u3089\u624b\u8853\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u7523\u696d<\/h3>\n

\u88fd\u9020\u696d\u3067\u306f\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u3092\u5229\u7528\u3057\u305f\u30bb\u30f3\u30b5\u30fc\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30bb\u30f3\u30b5\u30fc\u306f\u3001\u6e29\u5ea6\u3084\u5727\u529b\u3001\u3072\u305a\u307f\u306a\u3069\u3092\u9ad8\u7cbe\u5ea6\u3067\u6e2c\u5b9a\u3057\u3001\u88fd\u9020\u30d7\u30ed\u30bb\u30b9\u306e\u7ba1\u7406\u306b\u5bc4\u4e0e\u3057\u307e\u3059\u3002<\/p>\n

\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/h3>\n

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u3092\u5229\u7528\u3057\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u9ad8\u901f\u3067\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u308b\u305f\u3081\u3001\u76e3\u8996\u30ab\u30e1\u30e9\u306e\u6620\u50cf\u3084\u4fb5\u5165\u691c\u77e5\u30b7\u30b9\u30c6\u30e0\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u307e\u3068\u3081<\/h2>\n

\u30d5\u30a1\u30a4\u30d0\u30fc\u30aa\u30d7\u30c6\u30a3\u30af\u30b9\u306f\u3001\u5149\u4fe1\u53f7\u3092\u7528\u3044\u305f\u30c7\u30fc\u30bf\u4f1d\u9001\u6280\u8853\u3067\u3001\u73fe\u4ee3\u306e\u901a\u4fe1\u30a4\u30f3\u30d5\u30e9\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u512a\u308c\u305f\u4f1d\u9001\u7279\u6027\u3068\u591a\u5c90\u306b\u308f\u305f\u308b\u5fdc\u7528\u306f\u3001\u4eca\u5f8c\u3082\u307e\u3059\u307e\u3059\u5e83\u304c\u308b\u3053\u3068\u304c\u671f\u5f85\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u6280\u8853\u306e\u57fa\u672c\u539f\u7406\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u672a\u6765\u306e\u53ef\u80fd\u6027\u306b\u76ee\u3092\u5411\u3051\u308b\u7b2c\u4e00\u6b69\u3068\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u539f\u7406\u3068\u5fdc\u7528\u306b\u3064\u3044\u3066\u89e3\u8aac\u3002\u5168\u53cd\u5c04\u306e\u539f\u7406\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306e\u69cb\u9020\u3001\u7a2e\u985e\u3001\u901a\u4fe1\u3001\u533b\u7642\u3001\u7523\u696d\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3078\u306e\u5fdc\u7528\u3092\u7db2\u7f85\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[96],"tags":[97],"class_list":["post-209245","post","type-post","status-publish","format-standard","hentry","category-96","tag-97","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"\n\u30d5\u30a1\u30a4\u30d0\u30fc\u30aa\u30d7\u30c6\u30a3\u30af\u30b9 | \u539f\u7406\u3068\u5fdc\u7528\u306e\u89e3\u8aac<\/title>\n<meta name=\"description\" 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