útkülönbség

English translation: path length difference

10:37 Mar 19, 2010
Hungarian to English translations [PRO]
Science - Physics / Optics
Hungarian term or phrase: útkülönbség
Vékonyrétegek interferenciájával (thin film interference) kapcsolatos szöveget fordítok, és az "útkülönbség" angolítására lenne szükségem. Valahonnan rémlik a "phase shift", még köze is van a dologhoz, de nem vagyok benne biztos, hogy a két fogalom ugyanazt takarja. A segítséget előre is köszönöm!
trefi
Local time: 16:30
English translation:path length difference
Explanation:
Az úthossz "path length". Lehet a "difference in path length" fordulatot is alkalmazni. Figyeljünk azonban arra, hogy ténylegesen úthosszról, vagy optikai úthosszról van-e szó. Ez utóbbi ugyanis az úthossz szorozva a törésmutatóval (optical path length).

http://en.wikipedia.org/wiki/Interference_(wave_propagation)

http://en.wikipedia.org/wiki/Optical_path_length


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Note added at 8 mins (2010-03-19 10:46:01 GMT)
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"Abstract

Path length difference is the key parameter in two-beam interferometer, especially in low coherence interferometer. It determines the visibility of the interference fringes. In this study, we present a method to determine the path length difference between two arms of a fiber optic Mach–Zehnder interferometer by evaluating the peaks of power distribution of the interference spectrum with a wide band light source. The experimental results are in close agreement with the theoretical calculations."

Determination of path length difference by low coherence interference spectrum

Hui-Kang TengCorresponding Author Contact Information, a, Chia-Nan Changb and Kuo-Chen Langa

a Department of Electrical Engineering, Nan-Kai College, Nan-tou 542, Taiwan, ROC

b Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 100, Taiwan, ROC
Received 1 September 2003;
accepted 1 January 2004.
Available online 18 March 2004.
Selected response from:

egerhazi
Local time: 16:30
Grading comment
Még egyszer köszönöm.
4 KudoZ points were awarded for this answer



Summary of answers provided
3 +4path length difference
egerhazi
5diffential of optical path
Janos Fazakas
4optical path difference
Katalin Szilárd


  

Answers


4 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
(optikai) útkülönbség
optical path difference


Explanation:
http://www.britannica.com/EBchecked/topic/430459/optical-pat...

Aspects of the topic optical path difference are discussed in the following places at Britannica.
Assorted References

* light waves and lenses (in optics: Seidel sums)

...the y0 coordinate lying in the meridian plane containing the object point and the lens axis. The departure of the wave from the ideal sphere is generally called OPD, meaning optical path difference. It can be shown that OPD is related to x0 and y0 by five constants S1 through S5, and the quantity...

http://www.szgti.bmf.hu/opto/Opto_folia/P4b/Elmelet/CDFIZ.rt...

A leképezés minőségének tehát kifogástalannak, un. diffrakció limitáltnak kell lennie, amit úgy fejeznek ki, hogy az átlagos hullámfront torzulás OPDRMS (Optical Path Difference Root Mean Square) nem lehet a hullámhossz 0.07 század részénél nagyobb (Marechal kritérium), hiszen az OPU valójában egy miniatűr interferométer.

Katalin Szilárd
Hungary
Local time: 16:30
Native speaker of: Native in HungarianHungarian
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6 mins   confidence: Answerer confidence 5/5
diffential of optical path


Explanation:
lehet variálni a difference és differential között

Janos Fazakas
Local time: 16:30
Works in field
Native speaker of: Native in HungarianHungarian, Native in RomanianRomanian
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7 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): +4
path length difference


Explanation:
Az úthossz "path length". Lehet a "difference in path length" fordulatot is alkalmazni. Figyeljünk azonban arra, hogy ténylegesen úthosszról, vagy optikai úthosszról van-e szó. Ez utóbbi ugyanis az úthossz szorozva a törésmutatóval (optical path length).

http://en.wikipedia.org/wiki/Interference_(wave_propagation)

http://en.wikipedia.org/wiki/Optical_path_length


--------------------------------------------------
Note added at 8 mins (2010-03-19 10:46:01 GMT)
--------------------------------------------------

"Abstract

Path length difference is the key parameter in two-beam interferometer, especially in low coherence interferometer. It determines the visibility of the interference fringes. In this study, we present a method to determine the path length difference between two arms of a fiber optic Mach–Zehnder interferometer by evaluating the peaks of power distribution of the interference spectrum with a wide band light source. The experimental results are in close agreement with the theoretical calculations."

Determination of path length difference by low coherence interference spectrum

Hui-Kang TengCorresponding Author Contact Information, a, Chia-Nan Changb and Kuo-Chen Langa

a Department of Electrical Engineering, Nan-Kai College, Nan-tou 542, Taiwan, ROC

b Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 100, Taiwan, ROC
Received 1 September 2003;
accepted 1 January 2004.
Available online 18 March 2004.


egerhazi
Local time: 16:30
Specializes in field
Native speaker of: Native in HungarianHungarian
PRO pts in category: 4
Grading comment
Még egyszer köszönöm.
Notes to answerer
Asker: Köszönöm a választ (mindenki másnak is)! A phase shift-re is rájöttem azóta (:


Peer comments on this answer (and responses from the answerer)
agree  denny (X)
2 hrs
  -> köszi!

agree  Ildiko Santana: Pl. "Once we've determined the effective path-length difference between the two..." (A 'derengő' "phase shift" nem az út, hanem a szög változása: "whenever light reflects off a surface of higher index of refraction, a 180° phase shift is introduced"
4 hrs
  -> köszönöm

agree  Iosif JUHASZ
8 hrs
  -> köszönöm!

agree  Tradeuro Language Services
19 hrs
  -> köszönöm!
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