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Realization of pure AM/FM modulation...

Tian, Chao.

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Realization of pure AM/FM modulation via combined optical and electrical injection of carriers in DFB laser.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Realization of pure AM/FM modulation via combined optical and electrical injection of carriers in DFB laser./
作者:	Tian, Chao.
面頁冊數:	203 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.
Contained By:	Dissertation Abstracts International76-12B(E).
標題:	Optics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3715968
ISBN:	9781321943108

Realization of pure AM/FM modulation via combined optical and electrical injection of carriers in DFB laser.
Tian, Chao.

Realization of pure AM/FM modulation via combined optical and electrical injection of carriers in DFB laser. - 203 p.

Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.

Thesis (Ph.D.)--Stevens Institute of Technology, 2015.

A novel approach is proposed to generate emission at arbitrary frequency (v) and intensity (I) from a distributed feedback (DFB) laser operating at telecommunication wavelengths. It allows continuous and coherently sweeping over certain range given in a I -- v map via an arbitrary trace defined by user, as well as allows setting the laser output to any point inside the defined range with customized power and optical frequency.

ISBN: 9781321943108Subjects--Topical Terms:

517925
Optics.

Realization of pure AM/FM modulation via combined optical and electrical injection of carriers in DFB laser.
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245 1 0 $a Realization of pure AM/FM modulation via combined optical and electrical injection of carriers in DFB laser.
300 $a 203 p.
500 $a Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.
500 $a Adviser: Rainer Martini.
502 $a Thesis (Ph.D.)--Stevens Institute of Technology, 2015.
520 $a A novel approach is proposed to generate emission at arbitrary frequency (v) and intensity (I) from a distributed feedback (DFB) laser operating at telecommunication wavelengths. It allows continuous and coherently sweeping over certain range given in a I -- v map via an arbitrary trace defined by user, as well as allows setting the laser output to any point inside the defined range with customized power and optical frequency.
520 $a The proposed idea is realized through decoupling of amplitude modulation (AM) and frequency modulation (FM), by applying two different modulation approaches simultaneously: direct current modulation and non-resonant optical injection. As will be demonstrated, these modulation scheme exhibit different ratios between their resulted FM and AM signal, and hence proper combination with appropriate selection of their phase relation will allow for pure FM and pure AM.
520 $a A first application is the example of mode switching (1.42nm), which can be induced by non-resonant optical modulation, yet not by direct current modulation. Combination of both led to the generation of pure and discrete FM---in agreement with simulations based on coupled wave equations and transfer matrix method.
520 $a To be able to isolate FM and AM, a novel detection technique based on Polarization Maintaining fiber is proposed, simulated and realized, capable of detecting MHz range frequency chirp, as well as completely isolating AM signal and FM signal. With the help of the new detection device the chirp associated with the optical non resonant modulation could be further analyzed and found to be greater in magnitude but opposite in sign compared to the one associated with the direct current modulation.
520 $a Using combined optical and electrical modulation, a pure FM signal could be generated with FM/AM ratio above 19dB, and pure AM signal with an AM/FM ratio above 16.7dB. The residual frequency deviation is measured to be less than 13 MHz.
590 $a School code: 0733.
650 4 $a Optics. $3 517925
650 4 $a Communication. $3 524709
690 $a 0752
690 $a 0459
710 2 $a Stevens Institute of Technology. $b Engineering Optics. $3 3186097
773 0 $t Dissertation Abstracts International $g 76-12B(E).
790 $a 0733
791 $a Ph.D.
792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3715968