{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T07:40:01Z","timestamp":1698046801812},"reference-count":14,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T00:00:00Z","timestamp":1221177600000},"content-version":"vor","delay-in-days":6770,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Trans Emerging Tel Tech"],"published-print":{"date-parts":[[1990,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The near\u2010field and the modified far\u2010field techniques to measure the mode power distribution in a multimode optical fiber with graded\u2010index profile are analyzed for their sensitivity to measurement errors by computer simulation and are directly compared by measurements on a biconically fused coupler. It is found that the near\u2010field technique is quite insensitive against various measurement errors except of an incorrect determination of the core\u2010cladding boundary. In contrast to this the modified far\u2010field method needs high\u2010precision measurement equipment and measurement results appear unreliable. Therefore, the near\u2010field or the ordinary far\u2010field technique are recommended for mode transition matrix measurements.<\/jats:p>","DOI":"10.1002\/ett.4460010206","type":"journal-article","created":{"date-parts":[[2008,9,12]],"date-time":"2008-09-12T12:54:15Z","timestamp":1221224055000},"page":"111-117","source":"Crossref","is-referenced-by-count":0,"title":["Comparison of near\u2010field and far\u2010field methods for fiber\u2010optic DMA measurements"],"prefix":"10.1002","volume":"1","author":[{"given":"Manfred","family":"Behles","sequence":"first","affiliation":[]},{"given":"Udo","family":"Unrau","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2008,9,12]]},"reference":[{"key":"e_1_2_1_2_2","unstructured":"G. T.Holmes:Estimation of concatenated system response based on measured transfer functions for low and high order modes. Proc. 7th Europ. Conf. on Opt. Commun. Copenhagen1981 paper3.4."},{"key":"e_1_2_1_3_2","unstructured":"U. B.Unrau:Mode transition matrix techniques for multimode fiber\u2010optic components. Tech. Digest \u2014 Symposium on Optical Fiber Measurements Boulder CO (U.S.A.). Sept.1988 p.97\u2013102(NBS Special Publication 748)."},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1049\/el:19800481"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1364\/AO.20.000457"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/JQE.1979.1069912"},{"key":"e_1_2_1_7_2","unstructured":"D.Rittich:Determination of the mode spectrum in multimode optical fibers. Dr.\u2010Ing. thesis Wuppertal University (FRG) Faculty of Electr. Engg.1985(In German)."},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1109\/JLT.1985.1074215"},{"key":"e_1_2_1_9_2","volume-title":"Optical communications","author":"Unger H.\u2010G.","year":"1984"},{"key":"e_1_2_1_10_2","doi-asserted-by":"publisher","DOI":"10.1364\/OL.7.000572"},{"key":"e_1_2_1_11_2","first-page":"644","article-title":"Mode transition matrices as a means for the design of local\u2010area networks with optical fibers (In German","volume":"10","author":"Unrau U.","year":"1984","journal-title":"Mikrowellen magazin (Germany)"},{"key":"e_1_2_1_12_2","doi-asserted-by":"publisher","DOI":"10.1049\/el:19770019"},{"key":"e_1_2_1_13_2","first-page":"229","article-title":"A measurement set\u2010up for differential mode anolysis of fiber\u2010 optic components","volume":"8","author":"Agarwal A. K.","year":"1986","journal-title":"ntzArchiv, (Germany)"},{"key":"e_1_2_1_14_2","doi-asserted-by":"publisher","DOI":"10.1049\/el:19810270"},{"key":"e_1_2_1_15_2","unstructured":"A. R.Mickelson:Private communication 1988."}],"container-title":["European Transactions on Telecommunications"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fett.4460010206","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ett.4460010206","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,22]],"date-time":"2023-10-22T09:22:41Z","timestamp":1697966561000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/ett.4460010206"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1990,3]]},"references-count":14,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1990,3]]}},"alternative-id":["10.1002\/ett.4460010206"],"URL":"https:\/\/doi.org\/10.1002\/ett.4460010206","archive":["Portico"],"relation":{},"ISSN":["1124-318X","1541-8251"],"issn-type":[{"value":"1124-318X","type":"print"},{"value":"1541-8251","type":"electronic"}],"subject":[],"published":{"date-parts":[[1990,3]]}}}