{"id":251,"date":"2020-10-09T09:20:40","date_gmt":"2020-10-09T00:20:40","guid":{"rendered":"http:\/\/www.tmele.jp\/en2020\/?post_type=case&#038;p=251"},"modified":"2021-01-08T19:33:03","modified_gmt":"2021-01-08T10:33:03","slug":"%e4%bd%8e%e5%91%a8%e6%b3%a2ro%ef%bd%86","status":"publish","type":"case","link":"https:\/\/www.tmele.jp\/en2020\/case\/251\/","title":{"rendered":"Optical Converter for Lower Frequency Application"},"content":{"rendered":"<p>Regarding the research about characteristics of a substances occurred under ultra-high-magnetic-field, it is required to do measuring under environment of electromagnetic noise. Also, it is quite hard to do measuring avoiding common-mode by electromagnetic-induction or ground loop, which spend you a lot of time on coping with. Even if you connect output from sensor part with a shielded cable and install a measurement in the place where there is no infulence of noise, noise could  be induced to the shielded cable.<\/p>\n<p>So, introducing low-frequency-RoF, you can take advantage of characteristic of optical fiber, which means high-isolation, convert output signals from sensor into optical signals and do transmission. It makes you possible to avoid influence of electromagnetic noise and create ideal environment for measuring.<\/p>\n<p><!--p>&nbsp;<\/p>\n\n\n\n\n<h2 class=\"underbar-headcolor\">\u9069\u7528\u4e8b\u4f8b\u306e\u69cb\u6210<\/h2>\n\n\n\n\n<div style=\"text-align:center;\">\n<img decoding=\"async\" src=\"[sctpl]\/images\/case\/case05_fa05_rof_1.jpg\" alt=\"\" class=\"alignnone size-full wp-image-249\" \/>\n\n\n<p>\u4f4e\u5468\u6ce2ROF\u3092\u4f7f\u7528\u3057\u540c\u8ef8\u30b1\u30fc\u30d6\u30eb\u306e\u4ee3\u308f\u308a\u306b\u5149\u30d5\u30a1\u30a4\u30d0\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u96fb\u78c1\u30ce\u30a4\u30ba\u306e\u5f71\u97ff\u3092\u56de\u907f<\/p>\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n<img decoding=\"async\" src=\"[sctpl]\/images\/case\/case05_fa05_rof_2.jpg\" alt=\"\" class=\"alignnone size-full wp-image-249\" \/>\n<\/div>\n\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n\n<h2 class=\"underbar-headcolor\">\u5b9f\u7e3e\u30d6\u30ed\u30c3\u30af\u306e\u6a5f\u80fd<\/h2>\n\n\n\n\n<p>\u4f4e\u5468\u6ce2RoF\u306f\u3001\u5149\u9001\u4fe1\u5668\uff08E\/O\u30b3\u30f3\u30d0\u30fc\u30bf)\u3068\u5149\u53d7\u4fe1\u5668\uff08O\/E\u30b3\u30f3\u30d0\u30fc\u30bf)\u306b\u3066\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<br \/>\n\u30bb\u30f3\u30b5\u304b\u3089\u306e\u4fe1\u53f7\u306f\u3001E\/O\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u30ed\u30fc\u30ce\u30a4\u30ba\u30a2\u30f3\u30d7\uff08LNA\uff09\u3067\u4fe1\u53f7\u3092\u5897\u5e45\u3057\u3001\u30ec\u30fc\u30b6\u30fc\u30c0\u30a4\u30aa\u30fc\u30c9\uff08LD)\u306b\u3066\u96fb\u6c17\u4fe1\u53f7\u3092\u5149\u4fe1\u53f7\u306b\u5909\u63db\u3057\u5149\u30d5\u30a1\u30a4\u30d0\u3067\u4f1d\u9001\u3057\u307e\u3059\u3002O\/E\u30b3\u30f3\u30d0\u30fc\u30bf\u306f\u5149\u4fe1\u53f7\u3092\u30d5\u30a9\u30c8\u30c0\u30a4\u30aa\u30fc\u30c9(PD)\u3067\u53d7\u4fe1\u3057\uff2c\uff2e\uff21\u306b\u3066\u4fe1\u53f7\u5897\u5e45\u3057\u51fa\u529b\u3057\u307e\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u30d0\u30c3\u30c6\u30ea\u30fc\u3084\u6e2c\u5b9a\u5668\u306eUSB\u7aef\u5b50\u304b\u3089\u96fb\u6e90\u3092\u4f9b\u7d66\u3057\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n\n<div style=\"text-align:center;\">\n<img decoding=\"async\" src=\"[sctpl]\/images\/case\/case05_fa05_rof_3.jpg\" alt=\"\" class=\"alignnone size-full wp-image-249\" \/>\n\n\n<p>\u4f4e\u5468\u6ce2RoF\u306e\u69cb\u6210<\/p>\n\n\n<\/div>\n\n\n\n\n\n<h2 class=\"underbar-headcolor\">\u4e3b\u8981\u6027\u80fd<\/h2>\n\n\n\n\n<h3>\u7dcf\u5408\u4ed5\u69d8\uff08\u5bfe\u5411\u6027\u80fd\uff09<\/h3>\n\n\n\n\n<div class=\"inside fields flexs nowrap justify\">\n\t\n\n<div>\n\n\n<table>\n\n\n<tr>\n\n<th>\u9805\u76ee<\/th>\n\n\n\n<th>\u4ed5\u69d8<\/th>\n\n<\/tr>\n\n\n\n\n<tr>\n\n<th>\u5468\u6ce2\u6570\u7bc4\u56f2<\/th>\n\n\n\n<td>1kHz\uff5e120MHz<\/td>\n\n<\/tr>\n\n\n\n\n<tr>\n\n<th>\u5909\u63db\u52b9\u7387<\/th>\n\n\n\n<td>0dB\u00b12dB<\/td>\n\n<\/tr>\n\n\n\n\n<tr>\n\n<th>\u30ce\u30a4\u30ba\uff08\u5165\u529b\u63db\u7b97\u96d1\u97f3\uff09<\/th>\n\n\n\n<td>-120dBm\/\u221aHz \u4ee5\u4e0b<\/td>\n\n<\/tr>\n\n\n\n\n<tr>\n\n<th>\u96fb\u6e90\u4f9b\u7d66<\/th>\n\n\n\n<td>USB\uff08\u30e2\u30d0\u30a4\u30eb\u30d0\u30c3\u30c6\u30ea\u4f7f\u7528\u53ef\uff09<\/td>\n\n<\/tr>\n\n\n\n\n<tr>\n\n<th>\u5149\u4f1d\u9001\u8ddd\u96e2<\/th>\n\n\n\n<td>100m\u4ee5\u4e0a<\/td>\n\n<\/tr>\n\n\n<\/table>\n\n\n\t<\/div>\n\n\n<\/div-->\n","protected":false},"featured_media":0,"menu_order":25,"template":"","case_tax":[69],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/case\/251"}],"collection":[{"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/case"}],"about":[{"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/types\/case"}],"wp:attachment":[{"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/media?parent=251"}],"wp:term":[{"taxonomy":"case_tax","embeddable":true,"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/case_tax?post=251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}