Extinction ratio (original) (raw)
نسبة التوهين (الضعف) للإشعاع (بالإنجليزية: Extinction ratio ER) هي النسبة الضعف في إشعاع ما في حالتين مختلفتين، على سبيل المثال عند طولين موجيين مختلفين.
| Property | Value |
|---|---|
| dbo:abstract | نسبة التوهين (الضعف) للإشعاع (بالإنجليزية: Extinction ratio ER) هي النسبة الضعف في إشعاع ما في حالتين مختلفتين، على سبيل المثال عند طولين موجيين مختلفين. (ar) Das Extinktionsverhältnis (engl. Extinction ratio ER, Formelzeichen re) ist der Quotient zweier Messwerte der Abschwächung (Extinktion) einer Lichtstrahlung bei zwei verschiedenen Zuständen, z. B. verschiedenen Wellenlängen. (de) In telecommunications, extinction ratio (re) is the ratio of two optical power levels of a digital signal generated by an optical source, e.g., a laser diode. The extinction ratio may be expressed as a fraction, in dB, or as a percentage. It may be given by where P1 is the optical power level generated when the light source is on, and P0 is the power level generated when the light source is off. The polarization extinction ratio (PER) is the ratio of optical powers of perpendicular polarizations, usually called TE (transverse electric) and TM (transverse magnetic). In telecommunications, the PER is used to characterize the degree of polarization in a polarization-maintaining device or fiber. For coherent transmitter and receiver, the PER is a key parameter, since X polarization and Y polarization are coded with different signals. (en) |
| dbo:thumbnail | wiki-commons:Special:FilePath/On-off_keying_eye_diagram.svg?width=300 |
| dbo:wikiPageID | 41130 (xsd:integer) |
| dbo:wikiPageLength | 1778 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1115378253 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Power_(physics) dbr:Decibel dbr:Percentage dbc:Telecommunication_theory dbc:Laser_science dbc:Engineering_ratios dbr:Laser_diode dbc:Data_transmission dbr:Digital_signal_(electronics) dbr:Telecommunication dbr:Ratio dbr:File:On-off_keying_eye_diagram.svg |
| dbp:wikiPageUsesTemplate | dbt:Short_description dbt:FS1037C dbt:Electronics-stub |
| dct:subject | dbc:Telecommunication_theory dbc:Laser_science dbc:Engineering_ratios dbc:Data_transmission |
| rdf:type | yago:WikicatLasers yago:Artifact100021939 yago:Device103183080 yago:Instrumentality103575240 yago:Laser103643253 yago:Object100002684 yago:OpticalDevice103851341 yago:PhysicalEntity100001930 yago:Whole100003553 |
| rdfs:comment | نسبة التوهين (الضعف) للإشعاع (بالإنجليزية: Extinction ratio ER) هي النسبة الضعف في إشعاع ما في حالتين مختلفتين، على سبيل المثال عند طولين موجيين مختلفين. (ar) Das Extinktionsverhältnis (engl. Extinction ratio ER, Formelzeichen re) ist der Quotient zweier Messwerte der Abschwächung (Extinktion) einer Lichtstrahlung bei zwei verschiedenen Zuständen, z. B. verschiedenen Wellenlängen. (de) In telecommunications, extinction ratio (re) is the ratio of two optical power levels of a digital signal generated by an optical source, e.g., a laser diode. The extinction ratio may be expressed as a fraction, in dB, or as a percentage. It may be given by where P1 is the optical power level generated when the light source is on, and P0 is the power level generated when the light source is off. (en) |
| rdfs:label | نسبة التوهين (ar) Extinktionsverhältnis (de) Extinction ratio (en) |
| owl:sameAs | freebase:Extinction ratio yago-res:Extinction ratio wikidata:Extinction ratio dbpedia-ar:Extinction ratio dbpedia-de:Extinction ratio https://global.dbpedia.org/id/PZk5 |
| prov:wasDerivedFrom | wikipedia-en:Extinction_ratio?oldid=1115378253&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/On-off_keying_eye_diagram.svg |
| foaf:isPrimaryTopicOf | wikipedia-en:Extinction_ratio |
| is dbo:wikiPageRedirects of | dbr:Polarization_extinction_ratio |
| is dbo:wikiPageWikiLink of | dbr:List_of_laser_articles dbr:Optical_modulation_amplitude dbr:Prism_(optics) dbr:Polarization_(waves) dbr:Eye_pattern dbr:Polarizer dbr:Polarization_extinction_ratio |
| is foaf:primaryTopic of | wikipedia-en:Extinction_ratio |
