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Single mode optical fiber based devi...

Kulkarni, Ojas P.

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Single mode optical fiber based devices and systems for mid-infrared light generation, communication and metrology.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Single mode optical fiber based devices and systems for mid-infrared light generation, communication and metrology./
作者:	Kulkarni, Ojas P.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2011,
面頁冊數:	102 p.
附註:	Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7430.
Contained By:	Dissertation Abstracts International72-12B.
標題:	Optics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3476569
ISBN:	9781124911519

Single mode optical fiber based devices and systems for mid-infrared light generation, communication and metrology.
Kulkarni, Ojas P.

Single mode optical fiber based devices and systems for mid-infrared light generation, communication and metrology. - Ann Arbor : ProQuest Dissertations & Theses, 2011 - 102 p.

Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7430.

Thesis (Ph.D.)--University of Michigan, 2011.

Fiber-optic systems and devices for broadband mid-infrared light generation, communication and optical metrology are developed in this thesis.

ISBN: 9781124911519Subjects--Topical Terms:

517925
Optics.

Single mode optical fiber based devices and systems for mid-infrared light generation, communication and metrology.
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245 1 0 $a Single mode optical fiber based devices and systems for mid-infrared light generation, communication and metrology.
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300 $a 102 p.
500 $a Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7430.
500 $a Adviser: Mohammed N. Islam.
502 $a Thesis (Ph.D.)--University of Michigan, 2011.
520 $a Fiber-optic systems and devices for broadband mid-infrared light generation, communication and optical metrology are developed in this thesis.
520 $a Using the nonlinear properties of low mid-infrared loss ZrF4-BaF 2-LaF3-AlF3-NaF (ZBLAN) fiber, a mid-infrared supercontinuum (SC) laser based on a thulium-doped fiber amplifier (TDFA) with spectrum extending from &sim;1.9-4.5 microm is demonstrated. A higher efficiency, power-scalable, all-fiber integrated mid-infrared light source is realized capable of generating &sim;0.7 W time-average power in wavelengths beyond 3.8 microm.
520 $a The novelty of the laser lies in its two-step spectral shifting architecture. First, amplified laser diode pulses at 1.55 microm are used to generate a SC extending beyond 2 microm in standard SMF using modulation-instability initiated pulse break-up. A TDFA stage is then used to amplify the &sim;2 microm components in the standard SMF continuum. By subsequently coupling the amplified &sim;2 microm pulses in to a ZBLAN fiber, an SC with up to &sim;2.6 W average power, and &sim;9% optical conversion efficiency from the power-amp pump to mid-IR output is demonstrated. The two-step methodology leads to extension in the long wavelength edge of the SC from 4.2 microm to &sim;4.5 microm, compared to previously demonstrated systems and &sim;2.5 times higher optical efficiency in generating wavelengths beyond 3.8 microm. Numerical simulations are also presented based on solving the generalized non-linear Schrodinger equation to verify and extend experimental results.
520 $a A broadband surface-normal optical modulator for communication applications with operation demonstrated over 1200--2400 nm is also presented. The modulator uses free-carrier effect in GaAs and mode selectivity of SMF to generate up to &sim;43% modulation depth with a maximum operating speed of &sim;270 MHz. The broad wavelength range of operation of the modulator can potentially enable higher throughput wavelength-division multiplexed optical network architectures based on broadband light sources.
520 $a Finally, an optical probe for detection of porosity defects in automotive parts is presented. The probe relies on the spatial coherence properties of SMF output to detect defects as small as &sim;50 microm lateral dimensions in bores down to 5 mm diameter. The probe uses a novel two-directional scattering-based non-contact approach to detect and classify defects on surfaces, where human inspection is labor-intensive.
590 $a School code: 0127.
650 4 $a Optics. $3 517925
650 4 $a Electrical engineering. $3 649834
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710 2 $a University of Michigan. $3 777416
773 0 $t Dissertation Abstracts International $g 72-12B.
790 $a 0127
791 $a Ph.D.
792 $a 2011
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3476569