{"id":1429,"date":"2022-11-30T12:46:11","date_gmt":"2022-11-30T04:46:11","guid":{"rendered":"http:\/\/www.xzclass.com\/?p=1429"},"modified":"2023-05-06T15:30:29","modified_gmt":"2023-05-06T07:30:29","slug":"%e4%b8%96%e7%95%8c%e4%b8%8a%e7%ac%ac%e4%b8%80%e6%a0%b9%e5%85%89%e7%ba%a4%ef%bc%8c%e6%98%af%e8%b0%81%e9%80%a0%e5%87%ba%e6%9d%a5%e7%9a%84%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/www.xzclass.com\/?p=1429","title":{"rendered":"\u4e16\u754c\u4e0a\u7b2c\u4e00\u6839\u5149\u7ea4\uff0c\u662f\u8c01\u9020\u51fa\u6765\u7684\uff1f"},"content":{"rendered":"

1966\u5e74\uff0c\u5c31\u804c\u4e8e\u82f1\u56fd\u6807\u51c6\u7535\u4fe1\u5b9e\u9a8c\u6709\u9650\u516c\u53f8\u7684\u534e\u88d4\u79d1\u5b66\u5bb6<\/span><\/span>\u9ad8\u951f<\/strong>\uff08K.C.Kao\uff09\uff0c\u8054\u5408\u4ed6\u7684\u540c\u4e8b\u4e54\u6cbb\u00b7\u970d\u514b\u6c49\u59c6<\/strong>\uff08G.A.Hockham\uff09<\/span>\uff0c\u5171\u540c\u53d1\u8868\u4e86\u4e00\u7bc7\u9898\u4e3a\u300a\u5149\u9891\u7387\u4ecb\u8d28\u7ea4\u7ef4\u8868\u9762\u6ce2\u5bfc\u300b<\/strong>\u7684\u8bba\u6587\u3002<\/span><\/p>\n


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\u4f46\u662f\uff0c\u8fd9\u4e9b\u5de5\u5382\u90fd\u62d2\u7edd\u4e86\u9ad8\u951f\u3002\u4ed6\u4eec<\/span>\u4e0d\u6253\u7b97\u8fdb\u884c\u6df1\u5165\u7814\u7a76\uff0c\u56e0\u4e3a\u8fd9\u79cd\u7814\u7a76\u201c\u65e0\u610f\u4e49\u4e14\u8017\u8d44\u5de8\u5927\u201d\u3002<\/span><\/p>\n

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1966\u5e74\u7684\u5e74\u5e95\uff0c\u4e8b\u60c5\u8fce\u6765\u4e86\u8f6c\u673a\u3002<\/span><\/p>\n


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\u4e00\u4f4d\u540d\u53eb\u5a01\u5ec9\u00b7\u8c22\u5f17<\/strong>\uff08William Shaver\uff09<\/span>\u7684\u5de5\u7a0b\u5e08\uff0c\u5728\u82f1\u56fd\u4f26\u6566\u7684\u90ae\u5c40\u7814\u7a76\u5b9e\u9a8c\u5ba4\u8bbf\u95ee\uff0c\u770b\u5230\u4e86\u5b9e\u9a8c\u5ba4\u4ecb\u7ecd\u7684\u5149\u7ea4\u901a\u4fe1\u9879\u76ee\uff0c\u4ea7\u751f\u4e86\u6d53\u539a\u7684\u5174\u8da3\u3002<\/span><\/p>\n


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\u5a01\u5ec9\u00b7\u8c22\u5f17\u6240\u670d\u52a1\u7684\u516c\u53f8\uff0c\u4e0d\u662f\u4e00\u5bb6\u666e\u901a\u516c\u53f8\uff0c\u800c\u662f\u7f8e\u56fd\u5386\u53f2\u6700\u60a0\u4e45\u7684\u73bb\u7483\u5236\u9020\u4f01\u4e1a\u2014\u2014\u5eb7\u5b81\u516c\u53f8<\/span><\/strong>\uff08Corning Glass Works<\/span>\uff09\u3002<\/span><\/span><\/p>\n


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\u5eb7\u5b81\u516c\u53f8\u6210\u7acb\u4e8e1851\u5e74\u3002<\/span><\/p>\n

\u636e\u8bf4\uff0c\u7231\u8fea\u751f\u53d1\u660e\u7535\u706f\u7684\u73bb\u7483\u706f\u6ce1\uff0c\u5c31\u662f\u4ed6\u4eec\u9020\u7684\u3002<\/span><\/p>\n


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<\/span>\u56de\u5230\u7f8e\u56fd\u540e\uff0c<\/span>\u5a01\u5ec9\u00b7\u8c22\u5f17\u5411\u516c\u53f8\u9ad8\u5c42\u6c47\u62a5\u4e86\u81ea\u5df1\u7684\u89c1\u95fb\uff0c\u5e76\u5f3a\u70c8\u5efa\u8bae\u516c\u53f8\u8fdb\u884c\u5149\u7ea4\u7814\u7a76\u3002<\/span><\/p>\n

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\u5a01\u5ec9\u00b7\u8c22\u5f17\u7684\u5efa\u8bae\uff0c\u5f97\u5230\u4e86<\/span>\u5eb7\u5b81\u516c\u53f8\u9ad8\u5c42\u7684\u91cd\u89c6\u3002\u5f88\u5feb\uff0c\u4ed6\u4eec\u5c31\u4f4e\u8c03\u542f\u52a8\u4e86<\/span>\u9ad8\u7eaf\u5ea6\u73bb\u7483\u7ea4\u7ef4\u7684\u7814\u53d1\u3002<\/span><\/p>\n

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\u8d1f\u8d23\u7275\u5934\u8fd9\u9879\u5de5\u4f5c\u7684\uff0c\u662f\u5eb7\u5b81\u516c\u53f8\u7684\u7814\u53d1\u603b\u76d1\u2014\u2014\u6bd4\u5c14\u00b7\u963f\u59c6\u65af\u7279\u5fb7<\/span><\/strong>\uff08Bill Armistead\uff09<\/span>\u3002<\/span><\/p>\n


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\u4ed6\u627e\u6765\u4e86\u516c\u53f8\u7269\u7406\u5b66\u5bb6\u7f57\u4f2f\u7279\u00b7\u6bdb\u745e\u5c14<\/strong>\uff08Robert Maurer\uff09\uff0c\u914d\u7ed9\u4ed6\u4e24\u540d\u65b0\u5165\u804c\u7684\u5e74\u8f7b\u7814\u7a76\u5458<\/span>\uff08\u5316\u5b66\u5bb6\u76ae\u7279\u00b7\u8212\u5c14\u8328<\/strong>\u3001\u5b9e\u9a8c\u7269\u7406\u5b66\u5bb6\u5510\u7eb3\u5fb7\u00b7\u51ef\u514b<\/strong><\/span>\uff09\uff0c\u4ece\u800c\u7ec4\u5efa\u4e86\u4e00\u4e2a3\u4eba<\/span>\u7814\u7a76\u5c0f\u7ec4\u3002<\/span><\/p>\n


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\u5de6\u8d77\uff1a<\/span><\/span><\/p>\n

<\/span><\/span>\u5510\u7eb3\u5fb7\u00b7\u51ef\u514b\uff08Donald Keck\uff09<\/span><\/p>\n

\u7f57\u4f2f\u7279\u00b7\u6bdb\u745e\u5c14\uff08Robert Maurer\uff09<\/span><\/p>\n

\u76ae\u7279\u00b7\u8212\u5c14\u8328<\/span>\uff08Pete Schultz\uff09<\/span><\/span><\/p>\n

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\u4ed6\u51fa\u751f\u4e8e1924\u5e74\uff0c\u5e74\u8f7b\u65f6\u53c2\u52a0\u8fc7\u4e8c\u6218\uff0c\u83b7\u5f97\u8fc7\u7d2b\u5fc3\u52cb\u7ae0\u3002\u6218\u4e89\u7ed3\u675f\u540e\uff0c\u4ed6\u8fd4\u56de\u5927\u5b66\u5b66\u4e60\uff0c\u62ff\u5230\u4e86\u9ebb\u7701\u7406\u5de5\u5b66\u9662\u7684\u4f4e\u6e29\u7269\u7406\u5b66\u535a\u58eb\u5b66\u4f4d\uff0c\u5e76\u8fdb\u5165\u5eb7\u5b81\u516c\u53f8\u5de5\u4f5c\uff081952\u5e74\uff09\u3002<\/span><\/p>\n


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\u503c\u5f97\u4e00\u63d0\u7684\u662f\uff0c1956\u5e7412\u6708\uff0c\u4ed6\u53d1\u8868\u5728\u300a\u5316\u5b66\u7269\u7406\u6742\u5fd7\u300b\u4e0a\u7684\u4e00\u7bc7\u5173\u4e8e\u201c\u73bb\u7483\u662f\u51b7\u51bb\u6db2\u4f53\u201d<\/span>\u7684\u7406\u8bba\u8bba\u6587\uff0c\u66fe\u7ecf\u88ab\u9ad8\u951f\u90a3\u7bc7\u7ecf\u5178\u8bba\u6587\u5f15\u7528\u8fc7\uff0c\u7b97\u662f\u4e24\u4eba\u6700\u65e9\u7684\u4ea4\u96c6\u3002<\/span><\/span><\/p>\n


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3\u4eba\u5c0f\u7ec4\u6b63\u5f0f\u542f\u52a8\u7814\u7a76\u540e\uff0c\u5c31\u53d1\u73b0\u81ea\u5df1\u9762\u5bf9\u7684\u662f\u4e00\u9879\u5de8\u5927\u7684\u6311\u6218\u3002<\/span><\/p>\n


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\u5f53\u65f6\uff0c\u7eaf\u5ea6\u6700\u9ad8\u7684\u73bb\u7483\u7ea4\u7ef4\uff0c\u8870\u51cf\u7387\u7ea6\u4e3a 1000 dB\/km\u3002\u60f3\u8981\u5c06\u8fd9\u4e2a\u503c\u51cf\u5c0f\u5230 20 dB\/km\uff0c\u5e76\u4e0d\u662f50\u500d\u7684\u5173\u7cfb\uff0c\u800c\u662f\u60ca\u4eba\u768410\u768498\u6b21\u65b9\u7cfb\u6570\u5173\u7cfb\u3002<\/span><\/p>\n

\u67a3\u541b\u6ce8\uff1adB=10*lg(A\/B)\uff0c\u8868\u793a\u4e24\u4e2a\u6570\uff08A\u548cB\uff09\u7684\u6bd4\u503c\u5927\u5c0f\u3002A\u662fB\u76842\u500d\u65f6\uff0c\u662f3dB\u3002A\u662fB\u76841\u4e07\u500d\u65f6\uff0c\u662f40dB\u3002A\u662fB\u7684100\u4e07\u500d\u65f6\uff0c\u662f60dB\u3002<\/span><\/p>\n

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\u5bf9\u4ed6\u4eec\u6765\u8bf4\uff0c\u6709\u4e24\u79cd\u53ef\u884c\u7684\u8d77\u6b65\u65b9\u6848\uff1a\u7b2c\u4e00\uff0c\u91c7\u7528\u5927\u91cf\u9ad8\u7eaf\u5ea6\u7684\u5149\u5b66\u73bb\u7483\u3002\u7b2c\u4e8c\uff0c\u7194\u878d\u77f3\u82f1\uff08SiO2\uff0c\u4e8c\u6c27\u5316\u7845<\/span><\/span>\uff09\uff0c\u56e0\u4e3a\u77f3\u82f1\u53ef\u4ee5\u505a\u5230\u9ad8\u7eaf\u5ea6<\/span>\u3002<\/span><\/p>\n


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\u7b2c\u4e00\u79cd\u662f\u6bd4\u8f83\u6210\u719f\u7684\u65b9\u6848\uff0c\u4e5f\u662f\u90a3\u65f6\u5927\u90e8\u5206\u540c\u884c\u9009\u62e9\u7684\u65b9\u6848\u3002\u4f46\u662f\uff0c\u7f57\u4f2f\u7279\u00b7\u6bdb\u745e\u5c14\u72ec\u8f9f\u8e4a\u5f84\uff0c\u9009\u62e9\u4e86\u7b2c\u4e8c\u79cd\u65b9\u6848\u3002<\/span><\/span><\/p>\n


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\u4e8b\u540e\u4ed6\u56de\u5fc6\u9053\uff1a\u201c\u5982\u679c\u4f60\u505a\u7684\u4e8b\u60c5\u4e0e\u5176\u4ed6\u4eba\u6240\u505a\u7684\u4e0d\u540c\uff0c\u4f60\u5c31\u6709\u4e24\u4e2a\u4f18\u52bf\u3002\u4e00\uff0c\u4f60\u53ef\u80fd\u4f1a\u5728\u4ed6\u4eec\u5931\u8d25\u7684\u5730\u65b9\u53d6\u5f97\u6210\u529f\u3002\u4e8c\uff0c\u5982\u679c\u4f60\u5931\u8d25\u4e86\uff0c\u4f1a\u6536\u96c6\u5230\u4ed6\u4eec\u6ca1\u6709\u6536\u96c6\u5230\u7684\u4fe1\u606f\u3002\u201d<\/span><\/p>\n


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\u4e8c\u6c27\u5316\u7845\u662f\u4e00\u4e2a\u7eaf\u5ea6\u5f88\u9ad8\u7684\u6750\u6599\u3002\u4f46\u662f\uff0c\u5b83\u7684\u7194\u89e3\u6e29\u5ea6\u6781\u9ad8\uff0c\u9700\u89811650\u2103\u3002\u4e00\u822c\u7684\u70e4\u7089\uff0c\u6839\u672c\u8fbe\u4e0d\u5230\u8fd9\u6837\u7684\u6e29\u5ea6\u3002<\/span><\/p>\n


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\u7ecf\u8fc7\u4e00\u756a\u8c03\u67e5\uff0c\u7f57\u4f2f\u7279\u00b7\u6bdb\u745e\u5c14\u627e\u6765\u4e86\u5316\u5b66\u535a\u58eb\u5f17\u5170\u514b\u00b7\u9f50\u9a6c<\/strong>\uff08Frank Zimar<\/span>\uff09\u5e2e\u5fd9\u3002<\/span><\/span><\/p>\n


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\u5f17\u5170\u514b\u00b7\u9f50\u9a6c\u66fe\u7ecf<\/span>\u4e3a\u5eb7\u5b81\u65e9\u671f\u7684\u534a\u5bfc\u4f53\u9879\u76ee\u5efa\u9020\u4e86\u4e00\u4e2a\u70e4\u7089\uff0c\u53ef\u4ee5\u5b9e\u73b02000\u00b0C\u7684\u9ad8\u6e29\u3002<\/span><\/p>\n


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\u5728\u5f17\u5170\u514b\u00b7\u9f50\u9a6c\u7684\u5e2e\u52a9\u4e0b\uff0c1967\u5e74\uff0c\u7f57\u4f2f\u7279\u00b7\u6bdb\u745e\u5c14\u7684\u5c0f\u7ec4\u57fa\u4e8e\u63ba\u949b\u4e8c\u6c27\u5316\u7845\uff0c\u62c9\u51fa\u4e86\u7b2c\u4e00\u6839\u8bd5\u9a8c\u578b\u5355\u6a21\u5149\u7ea4\u3002\u7ecf\u8fc7\u6d4b\u8bd5\uff0c\u8fd9\u6839\u5149\u7ea4\u7684\u8870\u51cf\u4ecd\u7136\u5f88\u9ad8\uff0c\u4f46\u76f8\u6bd4\u4e4b\u524d\u5df2\u6709\u5f88\u5927\u7684\u6539\u8fdb\u3002\u8fd9\u589e\u5f3a\u4e86\u7814\u7a76\u5c0f\u7ec4\u7684\u4fe1\u5fc3\u3002<\/span><\/span><\/p>\n

<\/span>\u540e\u6765\uff0c\u7814\u7a76\u5c0f\u7ec4\u7ecf\u8fc7\u53cd\u590d\u5c1d\u8bd5\uff0c\u9010\u6e10\u638c\u63e1\u4e86\u5149\u7ea4\u9884\u5236\u68d2\u7684\u62c9\u5236\u6280\u5de7\uff0c\u8fd8\u6709\u70df\u7070\u6c89\u79ef\u7269\u5904\u7406\u7b49\u5173\u952e\u6280\u672f\u3002\u4ed6\u4eec\u5236\u9020\u7684\u5149\u7ea4\uff0c\u8870\u51cf\u7387\u6307\u6807\u4e0d\u65ad\u6539\u8fdb\uff0c\u9010\u6e10\u903c\u8fd1\u7406\u8bba\u503c\u3002<\/span><\/p>\n

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3\u4eba\u5c0f\u7ec4\u7684\u7814\u7a76\u8fdb\u5c55\uff0c\u88ab\u5eb7\u5b81\u516c\u53f8\u4e25\u683c\u4fdd\u5bc6\u3002\u76f4\u52301970\u5e745\u670811\u65e5\uff0c\u5eb7\u5b81\u516c\u53f8\u57fa\u4e8e\u5df2\u53d6\u5f97\u7684\u6210\u679c\uff0c\u7533\u8bf7\u4e86\u4e24\u9879\u4e13\u5229\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u7b2c\u4e00\u4e2a\u4e13\u5229\uff0c\u662f\u7f57\u4f2f\u7279\u00b7\u6bdb\u745e\u5c14<\/span>\u548c\u76ae\u7279\u00b7\u8212\u5c14\u8328\u7684\u201c\u7194\u878d\u77f3\u82f1\u5149\u6ce2\u5bfc\u201d\uff0c\u7528\u4e8e\u5177\u6709\u7eaf\u77f3\u82f1\u5305\u5c42\u548c\u63ba\u6742\u77f3\u82f1\u82af\u7684\u5149\u7ea4\u3002<\/span><\/p>\n

<\/p>\n

\u7b2c\u4e8c\u4e2a\u4e13\u5229\uff0c\u662f\u5510\u7eb3\u5fb7\u00b7\u51ef\u514b<\/span>\u548c\u76ae\u7279\u00b7\u8212\u5c14\u8328<\/span>\u7684\u201c\u751f\u4ea7\u5149\u6ce2\u5bfc\u7ea4\u7ef4\u7684\u65b9\u6cd5\u201d\uff0c\u6db5\u76d6\u4e86\u540e\u6765\u4f17\u6240\u5468\u77e5\u7684\u5185\u90e8\u6c14\u76f8\u6c89\u79ef\uff08IVD<\/span>\uff09\u5de5\u827a\u3002<\/span><\/p>\n


<\/span><\/p>\n

1970\u5e747\u670822\u65e5\uff0c\u7814\u7a76\u5c0f\u7ec4\u4ece6\u4e2a\u4e0d\u540c\u6210\u5206\u7684\u63ba\u949b\u9884\u5236\u68d2\u4e2d\uff0c\u62c9\u51fa6\u6839\u5149\u7ea4\u3002<\/span><\/p>\n

<\/p>\n

8\u67087\u65e5\uff0c\u4ed6\u4eec\u5bf9\u8fd9\u4e9b\u5149\u7ea4\u8fdb\u884c\u6d4b\u8bd5\u3002\u5728\u6d4b\u8bd5\u4e00\u683929\u7c73\u957f\u7684\u5149\u7ea4\u65f6\uff0c\u4ed6\u4eec\u5f97\u5230\u4e86\u4e00\u4e2a\u60ca\u4eba\u7684\u8870\u51cf\u503c\u7ed3\u679c\u2014\u201417 dB\/km<\/strong>\u3002\u8fd9\u662f\u6709\u53f2\u4ee5\u6765\u7b2c\u4e00\u6b21\u8fbe\u5230 20 dB\/km\u7684\u8bba\u6587\u76ee\u6807\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u5510\u7eb3\u5fb7\u00b7\u51ef\u514b\u6fc0\u52a8\u5730\u5c06<\/span>\u8fd9\u4e2a\u6570\u5b57\u8bb0\u5f55\u5728\u7b14\u8bb0\u672c\u4e0a\uff0c\u8fd8\u5199\u4e0b\u4e86\u201cWhoopee<\/strong>\uff08\u54c8\u54c8\u7684\u610f\u601d\uff0c\u8868\u793a\u5174\u594b\uff09\uff01\u201d<\/span>\u7684\u5b57\u6837\u3002<\/span><\/p>\n


<\/span><\/p>\n

29\u7c73\u7684\u5149<\/span>\u7ea4<\/span>\u957f\u5ea6\u8f83\u77ed\uff0c\u53ef\u80fd\u5f71\u54cd\u6d4b\u8bd5\u7ed3\u679c\u7684\u51c6\u786e\u6027\u3002\u4e3a\u4e86\u66f4\u52a0\u4e25\u8c28\uff0c8\u670821\u65e5\uff0c\u4ed6\u4eec\u53c8\u62c9\u51fa\u4e86\u4e00\u6839210\u7c73\u7684\u5149\u7ea4\uff0c\u5e76\u8fdb\u884c\u6d4b\u8bd5\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u5f53\u5510\u7eb3\u5fb7\u00b7\u51ef\u514b<\/span>\u7684\u6c26\u6c16\u6fc0\u5149\u5668\u8fdb\u5165\u5149\u7ea4\u7ea4\u82af\u65f6\uff0c\u4ed6\u60ca\u8bb6\u5730\u770b\u5230\u4e00\u9053\u975e\u5e38\u660e\u4eae\u7684\u7ea2\u8272\u95ea\u5149\u3002\u4ed6\u610f\u8bc6\u5230\uff0c\u8fd9\u662f\u6765\u81ea\u5149\u7ea4\u8fdc\u7aef\u7684\u83f2\u6d85\u5c14\u53cd\u5c04\u3002\u6b64\u65f6\uff0c\u4ed6\u8bb0\u5f55\u4e0b\u4e86\u5149\u7ea4\u8870\u51cf\u7387\u7684\u6d4b\u8bd5\u7ed3\u679c\u2014\u201416.9 dB\/km<\/strong>\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u7ec8\u4e8e\uff0c\u4ed6\u4eec\u53ef\u4ee5\u677e\u53e3\u6c14\u4e86\u3002\u4e16\u754c\u4e0a\u7b2c\u4e00\u6839\u7b26\u5408\u7406\u8bba\u7684\u4f4e\u635f\u8017\u8bd5\u9a8c\u6027\u5149\u7ea4<\/span>\uff0c\u6b63\u5f0f\u8bde\u751f\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

\u7814\u7a76\u5c0f\u7ec4\u548c\u4ed6\u4eec\u7684\u5149\u7ea4\u6210\u54c1\uff08\u5de6\u4e0b\u89d2\uff09<\/span><\/p>\n


<\/span><\/p>\n

1970\u5e749\u6708\u5e95\uff0c\u7f57\u4f2f\u7279\u00b7\u6bdb\u745e\u5c14<\/span>\u98de\u5f80\u4f26\u6566\uff0c\u5728\u82f1\u56fd\u7535\u6c14\u5de5\u7a0b\u5e08\u534f\u4f1a\u4e3b\u529e\u7684\u201c\u5bfc\u6ce2\u5e72\u7ebf\u901a\u4fe1\u201d\u4f1a\u8bae\u4e0a\uff0c\u5ba3\u5e03\u4e86\u81ea\u5df1\u56e2\u961f\u7684\u7814\u7a76\u6210\u679c\uff0c\u5f15\u8d77\u4e86\u6574\u4e2a\u884c\u4e1a\u7684\u8f70\u52a8\u3002<\/span><\/p>\n


\u540e\u6765\uff0c\u82f1\u56fd\u90ae\u5c40\u5b9e\u9a8c\u5ba4\u548c\u6807\u51c6\u7535\u4fe1\u5b9e\u9a8c\u5ba4\u4e13\u95e8\u5bf9\u4ed6\u4eec\u7684\u5149\u7ea4\u8fdb\u884c\u6d4b\u8bd5\uff0c\u9a8c\u8bc1\u4e86\u4ed6\u4eec\u7684\u6210\u679c\u3002
<\/span>
<\/span><\/p>\n

\u5eb7\u5b81\u7684\u5149\u7ea4\u7814\u5236\u6210\u529f\u540e\uff0c\u5e76\u6ca1\u6709\u9a6c\u4e0a\u4e0a\u5e02\u5546\u7528\u3002\u56e0\u4e3a\uff0c\u4ed6\u4eec\u7684\u5149\u7ea4\u4f7f\u7528\u7684\u662f\u63ba\u949b\u7ea4\u82af<\/span><\/strong>\uff0c\u8fd8\u5b58\u5728\u4e00\u4e9b\u6280\u672f\u7f3a\u9677\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u4e24\u5e74\u4e4b\u540e\uff0c1972\u5e746\u6708\uff0c\u5eb7\u5b81\u516c\u53f8\u4ee5\u63ba\u9517\u7ea4\u82af<\/strong>\u4ee3\u66ff\u63ba\u949b\u7ea4\u82af\uff0c\u91c7\u7528\u5916\u90e8\u6c14\u76f8\u6c89\u79ef \uff08OVD<\/span>\uff09\uff0c\u5236\u9020\u51fa\u4e86\u4e00\u6761\u635f\u8017\u4f4e\u81f3 4 dB\/km<\/strong>\u7684\u591a\u6a21\u5149\u7ea4\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u8fd9\u6839\u5149\u7ea4\uff0c\u4e0d\u4ec5\u8870\u51cf\u66f4\u4f4e\uff0c\u800c\u4e14\u5b9e\u7528\u6027\u66f4\u5f3a\uff0c\u5236\u9020\u8fc7\u7a0b\u66f4\u4e3a\u7b80\u5355\u3002<\/span><\/p>\n

<\/p>\n

<\/p>\n

\u6b63\u5728\u4f7f\u7528OVD\u6cd5\u5236\u4f5c\u63ba\u9517\u5149\u7ea4\u9884\u5236\u68d2\u7684\u76ae\u7279\u00b7\u8212\u5c14\u8328\uff081972\u5e74\uff09<\/span><\/span><\/p>\n


<\/strong><\/span><\/p>\n

\u540e\u6765\uff0c\u56e0\u4e3a\u7ecf\u6d4e\u8870\u9000\u7684\u539f\u56e0\uff0c\u5eb7\u5b81\u516c\u53f8\u7684\u53d1\u5c55\u9047\u5230\u4e86\u4e00\u4e9b\u95ee\u9898\uff0c\u5f71\u54cd\u4e86\u4ed6\u4eec\u5bf9\u5149\u7ea4\u6280\u672f\u7684\u5546\u7528\u63a8\u5e7f\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u4e3a\u4e86\u7b79\u63aa\u8d44\u91d1\uff0c\u5728\u5eb7\u5b81\u516c\u53f8\u8463\u4e8b\u957f\u517c\u9996\u5e2d\u6267\u884c\u5b98\u827e\u9ed8\u91cc\u00b7\u970d\u987f<\/strong>\uff08Amory Houghton\uff09<\/span>\u7684\u652f\u6301\u4e0b\uff0c\u5eb7\u5b81\u5149\u7ea4\u4e1a\u52a1\u8d1f\u8d23\u4eba\u67e5\u514b\u00b7\u9732\u897f<\/strong>\uff08<\/span>Chuck Lucy\uff09<\/span>\u4e0e\u591a\u5bb6\u901a\u4fe1\u516c\u53f8\u8fdb\u884c\u8c08\u5224\uff0c\u7b7e\u8ba2\u4e86\u8054\u5408\u5f00\u53d1\u534f\u8bae\uff0c\u5206\u644a\u5f00\u53d1\u6210\u672c\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u8fd9\u4e9b\u534f\u8bae\uff0c\u52a0\u5feb\u5149\u7ea4\u6280\u672f\u7684\u5546\u7528\u843d\u5730\u3002<\/span>1976\u5e74\uff0c\u7f8e\u56fdAT&T\u516c<\/span>\u53f8<\/span>\u5728<\/span>\u4e9a\u7279\u5170\u5927\u5b89\u88c5\u4e86\u4e16\u754c\u4e0a\u7b2c\u4e00\u4e2a<\/span>\u5b9e\u9a8c\u6027<\/span>\u5149\u7ea4\u901a\u4fe1\u7cfb\u7edf<\/span>\uff0c\u957f\u5ea6\u7ea6\u4e3a1.25\u82f1\u91cc\uff08\u7ea62000\u7c73\uff09<\/span>\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

<\/p>\n

\u4e09\u5e74\u540e\uff0c1979\u5e74\uff0c\u65e5\u672c\u7535\u62a5\u7535\u8bdd\u516c\u53f8\uff08NTT\uff09\u7814\u5236\u51fa\u4e86 0.2 dB\/km\u7684\u6781\u4f4e\u635f\u8017\u77f3\u82f1\u5149\u7ea4\u3002\u8fd9\u4e2a\u8870\u51cf\u503c\uff0c \u57fa\u672c\u63a5\u8fd1\u4e86\u6563\u5c04\u7684\u7406\u8bba\u6781\u9650\u3002<\/span><\/p>\n


<\/span><\/p>\n

1980\u5e74\uff0c\u666e\u83b1\u897f\u5fb7\u6e56\u51ac\u5965\u4f1a\u9996\u6b21\u4f7f\u7528\u5149\u7ea4\u7535\u7f06\u4f20\u8f93\u7535\u89c6\u4fe1\u53f7\uff0c\u53d6\u5f97\u4e86\u5de8\u5927\u6210\u529f\u3002<\/span>
<\/strong><\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

\u518d\u540e\u6765\u7684\u6545\u4e8b\uff0c\u5927\u5bb6\u5e94\u8be5\u90fd\u6bd4\u8f83\u719f\u6089\u4e86\u3002<\/span><\/p>\n


<\/span><\/p>\n

80-90\u5e74\u4ee3\uff0c\u5149\u7ea4\u6280\u672f\u8fc5\u901f\u5d1b\u8d77\uff0c\u6210\u4e3a\u6709\u7ebf\u901a\u4fe1\u4e2d\u91cd\u8981\u7684\u4f20\u8f93\u4ecb\u8d28\u3002\u8fdb\u516521\u4e16\u7eaa\uff0c\u5149\u7ea4\u66f4\u662f\u5168\u9762\u53d6\u4ee3\u91d1\u5c5e\u7ebf\u7f06\uff0c\u6210\u4e3a\u6574\u4e2a\u901a\u4fe1\u7f51\u7edc\u7684\u9aa8\u5e72\u5e95\u5ea7\u3002\u5355\u6839\u5149\u7ea4\u6240\u80fd\u4f20\u8f93\u7684\u6570\u636e\u91cf\uff0c\u65e9\u5df2\u7a81\u7834\u4e86TB\/s\u7ea7\u522b\u3002<\/span><\/p>\n


<\/span><\/p>\n

\u5982\u4eca\uff0c\u5168\u7403\u5149\u7f06\u5e74\u9700\u6c42\u91cf\u8d85\u8fc75\u4ebf\u82af\u516c\u91cc\u3002\u8fd9\u4e9b\u5149\u7ea4\uff0c\u4f20\u8f93\u7740\u6d77\u91cf\u7684\u6570\u636e\uff0c\u652f\u6491\u7740\u6574\u4e2a\u793e\u4f1a\u7684\u53d1\u5c55\uff0c\u4e5f\u4e3a\u4eba\u7c7b\u7684\u6587\u660e\u8fdb\u6b65\uff0c\u505a\u51fa\u7740\u5de8\u5927\u7684\u8d21\u732e\u3002<\/span><\/p>\n


<\/span><\/p>\n

<\/p>\n

<\/span><\/p>\n

<\/p>\n

<\/p>\n

\u2014\u2014 \u5168\u6587\u5b8c \u2014\u2014<\/span><\/p>\n

<\/p>\n

<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

1966\u5e74\uff0c\u5c31\u804c\u4e8e\u82f1\u56fd\u6807\u51c6\u7535\u4fe1\u5b9e\u9a8c\u6709\u9650\u516c\u53f8\u7684\u534e\u88d4\u79d1\u5b66\u5bb6\u9ad8\u951f\uff08K.C.Kao\uff09\uff0c\u8054\u5408\u4ed6\u7684\u540c\u4e8b\u4e54\u6cbb\u00b7\u970d\u514b\u6c49\u59c6\uff08G. […]<\/p>\n","protected":false},"author":1,"featured_media":1428,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[52,54],"tags":[19,164],"class_list":["post-1429","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-52","category-54","tag-19","tag-164"],"_links":{"self":[{"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/posts\/1429"}],"collection":[{"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1429"}],"version-history":[{"count":1,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/posts\/1429\/revisions"}],"predecessor-version":[{"id":1510,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/posts\/1429\/revisions\/1510"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=\/wp\/v2\/media\/1428"}],"wp:attachment":[{"href":"http:\/\/www.xzclass.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1429"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xzclass.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}