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</div> </div> </div><div class="pct"><style type="text/css">.pcb{margin-right:0}</style><div class="pcb"> <div class="t_fsz"> <table cellspacing="0" cellpadding="0"><tr><td class="t_f" id="postmessage_482163"> 我现在在国外，是做助教的课的一个作业题，老师让我帮他做出来，光纤<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">通信</a>的题目，学了快2年了，忘得差不多了，当时的课本也没带过来，这边的课本也借不到，而且我印象中这个题中很多概念以前光纤通信都没讲过，我现在的项目也不是做<a href="http://ofc.oecr.com" target="_blank" class="relatedlink">光通信</a>的，所以看了半天，实在不知道怎么做，哪位牛人帮个忙，先谢谢了<br /> A plane TE polarized lightwave with vacuum wavelength λ0 is incident on the interface between two dielectrics at an angle of incidence of θ1=86°. The two dielectrics have refractive indices n1=1.50 and n2=1.49. The incident light is propagating in the higher index material<br /> a) Calculate the relative field amplitude in both media as a function of distance, x, from the interface plane<br /> b) Plot the magnitude of the relative field amplitude vs. x, showing both sides of the interface. Show the standing wave pattern and accurately locate of the node positions<br /> c) What fraction of the incident energy density is present 0.5um away from the interface on the n2 side?</td></tr></table> </div> <div id="comment_482163" class="cm"> </div> <div id="post_rate_div_482163"></div> </div> </div> </td></tr> <tr><td class="plc plm"> <div id="p_btn" class="mtw mbm hm cl"> <a href="http://club.oecr.com/home.php?mod=spacecp&ac=favorite&type=thread&id=75326&formhash=875078d9" id="k_favorite" onclick="showWindow(this.id, this.href, 'get', 0);" onmouseover="this.title = $('favoritenumber').innerHTML + ' 人收藏'" title="收藏本帖"><i><img src="static/image/common/fav.gif" alt="收藏" />收藏<span id="favoritenumber" style="display:none">0</span></i></a> <a class="followp" href="home.php?mod=spacecp&ac=follow&op=relay&tid=75326&from=forum" onclick="showWindow('relaythread', this.href, 'get', 0);" title="转播求扩散"><i><img src="static/image/common/rt.png" alt="转播" />转播</i></a> <a class="sharep" 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