sfp鍏夋ā鍧?鍏夌氦妯″潡鐨勪富瑕佸弬鏁颁粙缁?-凯发88

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   2015-03-01 08:15:47    鏂囧瓧锛氥€?a href="javascript:fontzoom(16)">澶?/a>銆戙€?a href="javascript:fontzoom(14)">涓?/a>銆戙€?a href="javascript:fontzoom(12)">灏?/a>銆?/div>

褰卞搷鍏夌氦妯″潡鎬ц兘鐨勪富瑕佸弬鏁板涓嬶細

骞冲潎鍙戦€佸厜鍔熺巼(txlop:optical average power) 骞冲潎鍙戦€佸厜鍔熺巼鎸囦俊鍙烽€昏緫涓?鏃剁殑鍏夊姛鐜囦笌涓?鏃剁殑鍏夊姛鐜囩殑绠楁湳骞冲潎鍊? p0 p1 pavg = 2(dbm)

銆€銆€娑堝厜姣?er:extinction ratio) 淇″彿閫昏緫涓?鏃剁殑鍏夊姛鐜囦笌涓?鏃剁殑鍏夊姛鐜囩殑澶у皬涔嬫瘮.鍏惰绠楀叕寮忎负: p1er=10log p0 (db) er琛ㄧず娑堝厜姣?鍗曚綅涓篸b,p1鍜孭0鍒嗗埆琛ㄧず閫昏緫1鍙?鏃剁殑鍏夊姛鐜?

銆€銆€鎺ユ敹鐏垫晱搴?receiver sensitivity) 琛¢噺鎺ユ敹绔负淇濊瘉涓€瀹氳鐮佺巼(1脳10exp(-12))鎵€闇€鎺ユ敹鐨勬渶灏忓钩鍧囧厜鍔熺巼,鍗曚綅涓?dbm.璇爜鐜囨槸鎸囧湪杈冮暱涓€娈垫椂闂村唴,缁忚繃鎺ユ敹绔殑鍏夌數杞崲鍚庢敹鍒扮殑璇爜鐮佸厓鏁颁笌璇爜浠緭鍑虹缁欏嚭鐮佸厓鏁扮殑姣旂巼.

銆€銆€淇″彿涓㈠け鎸囩ず(los assert)鍜屼俊鍙蜂涪澶辨仮澶嶆寚绀?los dessert) 鎺ユ敹鍣ㄨ緭鍑轰竴涓數淇″彿,鍏剁數浣嶉珮浣庡弽鏄犲嚭鎺ユ敹鍣ㄦ墍鎺ユ敹鐨勫厜淇″彿寮哄害鏄惁瓒冲,灏嗚鐢典綅涓庨璁剧數浣嶆瘮杈冧互鍒ゅ畾鍏変俊鍙锋槸鍚︿涪澶?鐢典綅姣旇緝鏄噰鐢ㄥ叿鏈変竴瀹氬洖婊炴晥搴旂殑姣旇緝鍣ㄥ疄鐜?閫氬父鐢ㄩ璁剧數淇″彿瀵瑰簲鐨勫厜鍔熺巼浣滀负鎸囩ず,鍗曚綅涓篸bm

銆€銆€鐪煎浘妯℃澘瀹归檺(emm:eye mask margin) 鐪煎浘寮€鍚害,鎸囧湪鏈€浣虫娊鏍风偣澶勭溂鍥惧箙搴?寮犲紑"鐨勭▼搴?鏃犵暩鍙樼溂鍥剧殑寮€鍚害搴斾负100[[%]]. 鐪煎浘妯℃澘瀹归檺鏄寚鐪煎浘妯℃澘鎵╁紶,鐩村埌鏈夌溂鍥剧殑閲囨牱鐐硅繘鍏ュ埌鎵╁紶鍖哄煙鐨勬ā鏉挎渶澶ф墿寮犵櫨鍒嗘瘮

 

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