Lineshape Analysis of the Beat Signal Between Optical Carrier and Delayed Sidebands
| Data(s) |
2010
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| Resumo |
This paper presents the lineshape analysis of the beat signal between the optical carrier and the shifted and delayed side-bands produced by sinusoidal amplitude modulation. It is shown that the beat signal has a typical lineshape with a very narrow delta-peak superposed on a quasi-Lorentzian profile. Theoretical explanation for the appearance of this peak has been given based on optical spectral structure constructed by a large number of optical wave trains. It is predicted that the delta-peak is originated from the beat between the wave trains in the carrier and those in the delayed sidebands when their average coherence length is longer than the delay line. Experiments carried out using different delay lines clearly show that the delta-peak is always located at the modulation frequency and decreases with the increasing delay line. Our analysis explicitly indicates that the linewidth is related to the observation time. It is also suggested that the disappearance of the delta-peak can be used as the criterion of coherence elimination. Submitted by 阎军 (yanj@red.semi.ac.cn) on 2010-04-13T15:40:05Z No. of bitstreams: 1 Lineshape Analysis of the Beat Signal Between Optical Carrier and Delayed Sidebands.pdf: 1047423 bytes, checksum: 479dc9caeb501bcd502a4655d318496e (MD5) Approved for entry into archive by 阎军(yanj@red.semi.ac.cn) on 2010-04-13T16:04:28Z (GMT) No. of bitstreams: 1 Lineshape Analysis of the Beat Signal Between Optical Carrier and Delayed Sidebands.pdf: 1047423 bytes, checksum: 479dc9caeb501bcd502a4655d318496e (MD5) Made available in DSpace on 2010-04-13T16:04:28Z (GMT). No. of bitstreams: 1 Lineshape Analysis of the Beat Signal Between Optical Carrier and Delayed Sidebands.pdf: 1047423 bytes, checksum: 479dc9caeb501bcd502a4655d318496e (MD5) Previous issue date: 2010 National Natural Science Foundation of China 60536010 60606019 60777029 60820106004; National Basic Research Program of China 2006CB604902 2006CB302806 2006dfa11880 2009AA03Z409 其它 National Natural Science Foundation of China 60536010 60606019 60777029 60820106004; National Basic Research Program of China 2006CB604902 2006CB302806 2006dfa11880 2009AA03Z409 |
| Identificador | |
| Idioma(s) |
英语 |
| Fonte |
Zhu NH (Zhu Ning Hua), Man JW (Man Jiang Wei), Zhang HG (Zhang Hong Guang), Ke JH (Ke Jian Hong), Han W (Han Wei), Chen W (Chen Wei), Liu Y (Liu Yu), Wang X (Wang Xin), Yuan HQ (Yuan Hai Qing), Xie L (Xie Liang) .Lineshape Analysis of the Beat Signal Between Optical Carrier and Delayed Sidebands.IEEE JOURNAL OF QUANTUM ELECTRONICS,2010,46(3):347-353 |
| Palavras-Chave | #光电子学 #Coherence #heterodyne technique #intensity modulation #optical spectrum #lineshape #linewidth #SELF-HETERODYNE INTERFEROMETER #LASER LINEWIDTH MEASUREMENT #SURFACE-EMITTING LASER #SEMICONDUCTOR-LASER #MODULATION #DIODES |
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期刊论文 |
