{"id":208693,"date":"2024-03-21T14:06:51","date_gmt":"2024-03-21T14:06:51","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%ea%b5%b0%ec%86%8d%eb%8f%84-%eb%b6%84%ec%82%b0-gvd-%ea%b3%b5%ec%8b%9d-%ec%a0%95%ec%9d%98-%ea%b3%84%ec%82%b0-%eb%b0%8f-%ec%a0%81%ec%9a%a9\/"},"modified":"2024-05-15T11:31:34","modified_gmt":"2024-05-15T11:31:34","slug":"%ea%b5%b0%ec%86%8d%eb%8f%84-%eb%b6%84%ec%82%b0-gvd-%ea%b3%b5%ec%8b%9d-%ec%a0%95%ec%9d%98-%ea%b3%84%ec%82%b0-%eb%b0%8f-%ec%a0%81%ec%9a%a9","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ko\/%ea%b5%b0%ec%86%8d%eb%8f%84-%eb%b6%84%ec%82%b0-gvd-%ea%b3%b5%ec%8b%9d-%ec%a0%95%ec%9d%98-%ea%b3%84%ec%82%b0-%eb%b0%8f-%ec%a0%81%ec%9a%a9\/","title":{"rendered":"\uad70\uc18d\ub3c4 \ubd84\uc0b0 (GVD) \uacf5\uc2dd | \uc815\uc758, \uacc4\uc0b0 \ubc0f \uc801\uc6a9"},"content":{"rendered":"

\uad70\uc18d\ub3c4 \ubd84\uc0b0(GVD)\uc740 \ud30c\ub3d9\uc758 \uc18d\ub3c4\uac00 \uc8fc\ud30c\uc218\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c0\ub294 \ud604\uc0c1\uc744 \uc124\uba85\ud558\ub294 \ubb3c\ub9ac\ud559 \uc6a9\uc5b4\uc785\ub2c8\ub2e4.<\/p>\n

\uad70\uc18d\ub3c4 \ubd84\uc0b0 (GVD)\uc758 \uc815\uc758<\/h2>\n

\uad70\uc18d\ub3c4 \ubd84\uc0b0(Group Velocity Dispersion, \uc774\ud558 GVD)\uc740 \ud30c\ub3d9\uc758 \uc18d\ub3c4\uac00 \uadf8 \ud30c\ub3d9\uc758 \uc8fc\ud30c\uc218\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c0\ub294 \ud604\uc0c1\uc744 \uc124\uba85\ud558\ub294 \ubb3c\ub9ac\ud559 \uc6a9\uc5b4\uc785\ub2c8\ub2e4. \ud2b9\ud788, \uad11\ud559\uacfc \uc804\uc790\uae30\ud559\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \uac1c\ub150\uc73c\ub85c, \ud30c\uc774\ubc84 \uc635\ud2f1, \ub808\uc774\uc800 \ubb3c\ub9ac\ud559 \ub4f1 \uc5ec\ub7ec \ubd84\uc57c\uc5d0\uc11c \ud575\uc2ec\uc801\uc73c\ub85c \ub2e4\ub8e8\uc5b4\uc9d1\ub2c8\ub2e4.<\/p>\n

\uad70\uc18d\ub3c4\ub780 \ud30c\ub3d9\uad70(\ub2e4\uc591\ud55c \uc8fc\ud30c\uc218\ub97c \uac00\uc9c4 \ud30c\ub3d9\ub4e4\uc758 \uc9d1\ud569)\uc774 \uc804\ud30c\ud558\ub294 \uc18d\ub3c4\ub97c \uc758\ubbf8\ud558\uba70, \uc774\ub294 \uac1c\ubcc4 \ud30c\ub3d9\ub4e4\uc758 \uc704\uc0c1\uc18d\ub3c4\uc640\ub294 \ub2e4\ub97c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc704\uc0c1\uc18d\ub3c4\ub294 \ub2e8\uc77c \uc8fc\ud30c\uc218\ub97c \uac16\ub294 \ud30c\ub3d9\uc758 \uc18d\ub3c4\ub97c \ub9d0\ud558\uba70, \uad70\uc18d\ub3c4\ub294 \uc774\ub7ec\ud55c \ud30c\ub3d9\ub4e4\uc758 ‘\ud3c9\uade0’ \uc804\ud30c \uc18d\ub3c4\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n

GVD \uacc4\uc0b0\ud558\uae30<\/h2>\n

GVD\ub294 \uc8fc\ub85c \ub450 \ubc88\uc9f8 \ucc28\uc218\uc758 \uad70\uc18d\ub3c4 \ubd84\uc0b0\uc744 \uc758\ubbf8\ud558\uba70, \ub2e4\uc74c\uacfc \uac19\uc774 \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n

\\[ \\text{GVD} = \\frac{\\partial^2 k}{\\partial \\omega^2} \\]<\/p>\n

\uc5ec\uae30\uc11c \\( k \\)\ub294 \ud30c\ub3d9 \ubca1\ud130\uc758 \ud06c\uae30\uc774\uace0, \\( \\omega \\)\ub294 \uac01\uc8fc\ud30c\uc218\uc785\ub2c8\ub2e4. \uc774 \ubbf8\ubd84\uc740 \uc8fc\ud30c\uc218\uc5d0 \ub530\ub978 \ud30c\ub3d9 \ubca1\ud130\uc758 \ubcc0\ud654\uc728\uc744 \ub098\ud0c0\ub0b4\uba70, \uc774 \uac12\uc774 \ud06c\uba74 \ud074\uc218\ub85d \ub2e4\uc591\ud55c \uc8fc\ud30c\uc218\uc758 \ud30c\ub3d9\ub4e4\uc774 \uc11c\ub85c \ub2e4\ub978 \uc18d\ub3c4\ub85c \uc804\ud30c\ub418\uc5b4, \ud384\uc2a4\uac00 \ud37c\uc9c0\uac8c \ub429\ub2c8\ub2e4.<\/p>\n

\uc2e4\uc81c \uacc4\uc0b0 \uc608\ub97c \ub4e4\uc5b4\ubcf4\uba74, \ube5b\uc758 \ud30c\uc7a5\uc774 \\( \\lambda \\)\uc77c \ub54c, \ud30c\ub3d9\uc218 \\( k \\)\ub294 \\( \\frac{2\\pi}{\\lambda} \\)\uc774\uba70, \uac01\uc8fc\ud30c\uc218 \\( \\omega \\)\ub294 \\( c \\times k \\)\ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4 \uc5ec\uae30\uc11c \\( c \\)\ub294 \ube5b\uc758 \uc18d\ub3c4\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c GVD\ub294:<\/p>\n

\\[ \\text{GVD} = \\frac{\\partial^2 (\\frac{2\\pi}{\\lambda})}{\\partial (c \\times \\frac{2\\pi}{\\lambda})^2} \\]<\/p>\n

\ub85c \uacc4\uc0b0\ub418\uc5b4\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

GVD\uc758 \uc801\uc6a9<\/h2>\n

GVD\ub294 \ud2b9\ud788 \uad11\ud1b5\uc2e0\uacfc \ub808\uc774\uc800 \uae30\uc220\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uad11\uc12c\uc720\ub97c \ud1b5\ud574 \uc2e0\ud638\ub97c \uc804\uc1a1\ud560 \ub54c, \uac01\uae30 \ub2e4\ub978 \uc8fc\ud30c\uc218\uc758 \ube5b\uc774 \ub2e4\ub978 \uc18d\ub3c4\ub85c \uc804\ud30c\ub418\uba74 \ud384\uc2a4\uac00 \ub113\uc5b4\uc9c0\ub294 \ud604\uc0c1(\ud384\uc2a4 \ube0c\ub85c\ub4dc\ub2dd)\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \ud604\uc0c1\uc740 \uc2e0\ud638\uc758 \ud488\uc9c8\uc744 \uc800\ud558\uc2dc\ud0ac \uc218 \uc788\uc5b4, GVD\ub97c \uc815\ubc00\ud558\uac8c \uc81c\uc5b4\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n

\ub808\uc774\uc800 \uae30\uc220\uc5d0\uc11c\ub294, \uace0\ucd9c\ub825 \ud384\uc2a4 \ub808\uc774\uc800\ub97c \ub9cc\ub4e4\uae30 \uc704\ud574 \ud328\ud0b7\uc758 \uc77c\uc815\ud55c \uad70\uc18d\ub3c4\ub97c \uc720\uc9c0\ud558\ub294 \uac83\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \ud384\uc2a4\uac00 \uad11\ud559\uc801 \ub9e4\uccb4\ub97c \ud1b5\uacfc\ud560 \ub54c GVD\ub85c \uc778\ud574 \ud384\uc2a4\uc758 \ubaa8\uc591\uacfc \uc9c0\uc18d \uc2dc\uac04\uc774 \ubcc0\ud560 \uc218 \uc788\ub294\ub370, \uc774\ub294 \ub808\uc774\uc800\uc758 \uc131\ub2a5\uc5d0 \uc9c1\uc811\uc801\uc778 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/p>\n

\uacb0\ub860<\/h2>\n

\uad70\uc18d\ub3c4 \ubd84\uc0b0\uc740 \ud604\ub300 \ubb3c\ub9ac\ud559 \ubc0f \uacf5\ud559\uc5d0\uc11c \uc911\uc694\ud55c \uac1c\ub150\uc73c\ub85c, \uad11\ud1b5\uc2e0 \ubc0f \ub808\uc774\uc800 \uae30\uc220\uc758 \ud6a8\uc728\uc131\uc744 \ub192\uc774\ub294 \ub370 \ud575\uc2ec\uc801\uc778 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc774\ub860\uc801\uc778 \uacc4\uc0b0\ubfd0\ub9cc \uc544\ub2c8\ub77c, \ub2e4\uc591\ud55c \uc2e4\uc6a9\uc801 \uc801\uc6a9\uc744 \ud1b5\ud574 GVD\ub97c \uc81c\uc5b4\ud558\uace0 \ucd5c\uc801\ud654\ud558\ub294 \uae30\uc220\uc740 \uacc4\uc18d\ud574\uc11c \ubc1c\uc804\ud558\uace0 \uc788\uc73c\uba70, \uc774\ub294 \uacfc\ud559\uae30\uc220\uc758 \ubc1c\uc804\uc5d0 \ud06c\uac8c \uae30\uc5ec\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

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