Document (#13407)

Title
Photonik
Source
Spektrum der Wissenschaft. 1996, H.7, S.102-113
Year
1996
Abstract
Das wachsende Verkehrsaufkommen auf der vielzitierten Datenautobahn verlangt nach Techniken, immer größere Datenraten zu bewältigen. Licht transportiert digitalisierte Informationen in vielerlei Hinsicht besser als ein Elektronenstrom, denn Photonen werden ungleich weniger gedämpft und stören sich gegenseitig nicht. Doch bedarf es aus demselben Grunde elektronischer Bauteile, um die Datenströme zu steuern und zu verteilen. Gegenwärtige Entwicklungen zielen darauf, die optische Übertragung für immer kürzere Distanzen zu nutzen und die Symbiose beider Techniken auch auf der Ebene digitalisierter Schaltungen zu realisieren
Content
DIEHL, R.: Photonik: die Zukunft der Informationstechnik; GROTE, N.: Materialien und Technologien für Glasfasernetze; LANGER, K.-D.: Photonik für die weltweite Vernetzung; LÖSCH, K.: Datentransport über geringe Entfernungen

Similar documents (content)

  1. Cerf, V.G.: Netztechnik (1995) 0.07
    0.07483124 = sum of:
      0.07483124 = product of:
        0.6235937 = sum of:
          0.22325519 = weight(abstract_txt:bewältigen in 877) [ClassicSimilarity], result of:
            0.22325519 = score(doc=877,freq=1.0), product of:
              0.17670526 = queryWeight, product of:
                1.0681946 = boost
                8.085969 = idf(docFreq=36, maxDocs=44218)
                0.020458182 = queryNorm
              1.2634326 = fieldWeight in 877, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.085969 = idf(docFreq=36, maxDocs=44218)
                0.15625 = fieldNorm(doc=877)
          0.29406732 = weight(abstract_txt:digitalisierter in 877) [ClassicSimilarity], result of:
            0.29406732 = score(doc=877,freq=1.0), product of:
              0.21233077 = queryWeight, product of:
                1.1709331 = boost
                8.863674 = idf(docFreq=16, maxDocs=44218)
                0.020458182 = queryNorm
              1.3849491 = fieldWeight in 877, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.863674 = idf(docFreq=16, maxDocs=44218)
                0.15625 = fieldNorm(doc=877)
          0.10627117 = weight(abstract_txt:immer in 877) [ClassicSimilarity], result of:
            0.10627117 = score(doc=877,freq=1.0), product of:
              0.13572778 = queryWeight, product of:
                1.3239604 = boost
                5.0110264 = idf(docFreq=800, maxDocs=44218)
                0.020458182 = queryNorm
              0.7829729 = fieldWeight in 877, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0110264 = idf(docFreq=800, maxDocs=44218)
                0.15625 = fieldNorm(doc=877)
        0.12 = coord(3/25)
    
  2. MacNeilage, P.F.; Rogers, L.J.; Vallortingara, G.: Warum unser Gehirn zwei Seiten hat (2010) 0.06
    0.05855706 = sum of:
      0.05855706 = product of:
        0.7319633 = sum of:
          0.32158387 = weight(abstract_txt:verteilen in 3206) [ClassicSimilarity], result of:
            0.32158387 = score(doc=3206,freq=1.0), product of:
              0.22537787 = queryWeight, product of:
                1.206372 = boost
                9.131938 = idf(docFreq=12, maxDocs=44218)
                0.020458182 = queryNorm
              1.4268653 = fieldWeight in 3206, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.131938 = idf(docFreq=12, maxDocs=44218)
                0.15625 = fieldNorm(doc=3206)
          0.4103794 = weight(abstract_txt:ungleich in 3206) [ClassicSimilarity], result of:
            0.4103794 = score(doc=3206,freq=1.0), product of:
              0.26515844 = queryWeight, product of:
                1.308514 = boost
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.020458182 = queryNorm
              1.5476762 = fieldWeight in 3206, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                9.905128 = idf(docFreq=5, maxDocs=44218)
                0.15625 = fieldNorm(doc=3206)
        0.08 = coord(2/25)
    
  3. Kleinsteuber, H.J.: ¬Die Verheißung der Kabeldemokratie : von der amerikanischen Datenautobahn und dem deutschen digitalen Fernsehen (1994) 0.05
    0.04543948 = sum of:
      0.04543948 = product of:
        0.5679935 = sum of:
          0.4060373 = weight(title_txt:datenautobahn in 8519) [ClassicSimilarity], result of:
            0.4060373 = score(doc=8519,freq=1.0), product of:
              0.19246233 = queryWeight, product of:
                1.1148039 = boost
                8.43879 = idf(docFreq=25, maxDocs=44218)
                0.020458182 = queryNorm
              2.1096976 = fieldWeight in 8519, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.43879 = idf(docFreq=25, maxDocs=44218)
                0.25 = fieldNorm(doc=8519)
          0.16195622 = weight(abstract_txt:techniken in 8519) [ClassicSimilarity], result of:
            0.16195622 = score(doc=8519,freq=1.0), product of:
              0.25267136 = queryWeight, product of:
                1.8064196 = boost
                6.8370748 = idf(docFreq=128, maxDocs=44218)
                0.020458182 = queryNorm
              0.6409758 = fieldWeight in 8519, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                6.8370748 = idf(docFreq=128, maxDocs=44218)
                0.09375 = fieldNorm(doc=8519)
        0.08 = coord(2/25)
    
  4. Lepsky, K.: Automatische Indexierung des Reallexikons zur Deutschen Kunstgeschichte (2006) 0.04
    0.0417492 = sum of:
      0.0417492 = product of:
        0.2609325 = sum of:
          0.050196715 = weight(abstract_txt:größere in 6080) [ClassicSimilarity], result of:
            0.050196715 = score(doc=6080,freq=1.0), product of:
              0.16464123 = queryWeight, product of:
                1.0310861 = boost
                7.805067 = idf(docFreq=48, maxDocs=44218)
                0.020458182 = queryNorm
              0.30488545 = fieldWeight in 6080, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                7.805067 = idf(docFreq=48, maxDocs=44218)
                0.0390625 = fieldNorm(doc=6080)
          0.06728618 = weight(abstract_txt:digitalisierte in 6080) [ClassicSimilarity], result of:
            0.06728618 = score(doc=6080,freq=1.0), product of:
              0.20015773 = queryWeight, product of:
                1.1368726 = boost
                8.6058445 = idf(docFreq=21, maxDocs=44218)
                0.020458182 = queryNorm
              0.3361658 = fieldWeight in 6080, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.6058445 = idf(docFreq=21, maxDocs=44218)
                0.0390625 = fieldNorm(doc=6080)
          0.026567793 = weight(abstract_txt:immer in 6080) [ClassicSimilarity], result of:
            0.026567793 = score(doc=6080,freq=1.0), product of:
              0.13572778 = queryWeight, product of:
                1.3239604 = boost
                5.0110264 = idf(docFreq=800, maxDocs=44218)
                0.020458182 = queryNorm
              0.19574322 = fieldWeight in 6080, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                5.0110264 = idf(docFreq=800, maxDocs=44218)
                0.0390625 = fieldNorm(doc=6080)
          0.116881825 = weight(abstract_txt:techniken in 6080) [ClassicSimilarity], result of:
            0.116881825 = score(doc=6080,freq=3.0), product of:
              0.25267136 = queryWeight, product of:
                1.8064196 = boost
                6.8370748 = idf(docFreq=128, maxDocs=44218)
                0.020458182 = queryNorm
              0.46258438 = fieldWeight in 6080, product of:
                1.7320508 = tf(freq=3.0), with freq of:
                  3.0 = termFreq=3.0
                6.8370748 = idf(docFreq=128, maxDocs=44218)
                0.0390625 = fieldNorm(doc=6080)
        0.16 = coord(4/25)
    
  5. Gellert, H.: Kundenfreundliche Datenautobahn (1995) 0.04
    0.040603727 = sum of:
      0.040603727 = product of:
        1.0150932 = sum of:
          1.0150932 = weight(title_txt:datenautobahn in 889) [ClassicSimilarity], result of:
            1.0150932 = score(doc=889,freq=1.0), product of:
              0.19246233 = queryWeight, product of:
                1.1148039 = boost
                8.43879 = idf(docFreq=25, maxDocs=44218)
                0.020458182 = queryNorm
              5.274244 = fieldWeight in 889, product of:
                1.0 = tf(freq=1.0), with freq of:
                  1.0 = termFreq=1.0
                8.43879 = idf(docFreq=25, maxDocs=44218)
                0.625 = fieldNorm(doc=889)
        0.04 = coord(1/25)