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Toward multi-terabit optical fiber c...

Hu, Shih-Tse.

Toward multi-terabit optical fiber communications.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Toward multi-terabit optical fiber communications.
Author:	Hu, Shih-Tse.
Description:	159 p.
Notes:	Adviser: Leonid G. Kazovsky.
Notes:	Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5928.
Contained By:	Dissertation Abstracts International65-11B.
Subject:	Engineering, Electronics and Electrical.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3153517
ISBN:	0496138324

Toward multi-terabit optical fiber communications.
Hu, Shih-Tse.

Toward multi-terabit optical fiber communications. - 159 p.

Adviser: Leonid G. Kazovsky.

Thesis (Ph.D.)--Stanford University, 2005.

Another direction to increase fiber capacity is to increase the spectral efficiency. We proposed and implemented a direct-detection scheme of 4-level polarization shift keying (PolSK) that carries 2 bits/symbol. The scheme can be expanded to 8-level and 2n-level PolSK systems as well. We also proposed analog polarization modulations that can reduce nonlinear crosstalks and increase the stimulated Brillouin scattering (SBS) threshold. Another application of polarization modulations is to achieve low polarization-dependent gain (PDG) in nonlinear amplifiers. We have demonstrated that employing polarization modulations on Raman pumps can effectively reduce the PDG with little signal impairments.

ISBN: 0496138324Subjects--Topical Terms:

226981
Engineering, Electronics and Electrical.

Toward multi-terabit optical fiber communications.
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245 1 0 $a Toward multi-terabit optical fiber communications.
300 $a 159 p.
500 $a Adviser: Leonid G. Kazovsky.
500 $a Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5928.
502 $a Thesis (Ph.D.)--Stanford University, 2005.
520 # $a Another direction to increase fiber capacity is to increase the spectral efficiency. We proposed and implemented a direct-detection scheme of 4-level polarization shift keying (PolSK) that carries 2 bits/symbol. The scheme can be expanded to 8-level and 2n-level PolSK systems as well. We also proposed analog polarization modulations that can reduce nonlinear crosstalks and increase the stimulated Brillouin scattering (SBS) threshold. Another application of polarization modulations is to achieve low polarization-dependent gain (PDG) in nonlinear amplifiers. We have demonstrated that employing polarization modulations on Raman pumps can effectively reduce the PDG with little signal impairments.
520 # $a It has been found that tellurite-based erbium-doped fiber amplifiers (Te-EDFAs) can exhibit &sim;80 nm of bandwidth. We have explored gain, noise figure, and nonlinearities of Te-EDFAs. We have also found that under similar operating conditions Te-EDFA shows superior transient behavior compared to silica-based EDFAs (Si-EDFAs).
520 # $a Raman amplifiers (RAs) and optical parametric amplifiers (OPAs) have shown potential as next-generation optical amplifiers. Photonic crystal fibers (PCFs) have received vast interest recently, due to the possibility of designing fibers with unprecedented nonlinearities and novel dispersion characteristics, thus making them the ideal candidate for being the nonlinear media of RAs and OPAs. We have developed and implemented an efficient full-vectorial algorithm to simulate the PCFs. With this algorithm, we have designed PCFs with high Raman coefficients, and tellurite-based PCFs that exhibit nonlinear coefficients &sim;200 W-1km-1 with the zero-dispersion wavelength (ZDW) at 1550nm. We predict 10&sim;15-m-long such fibers can have more than 150 nm OPA bandwidth with a modest pump power.
520 # $a The revolution of WDM technology has changed the world. Now a single mode fiber can carry more than 1 Tb/s over more than 10,000 km. Nonetheless, in a few years the emerging services of broadband access networks will drive the demand for capacity for long-haul networks. Therefore, new technologies have to be developed in order to satisfy future demands.
520 # $a There are two orthogonal directions that lead to higher capacity---either increase the bandwidth of optical amplifiers, or increase the spectral efficiency of modulation schemes so that more information can be packed in a given bandwidth. This dissertation will cover our efforts in both directions.
590 $a School code: 0212.
650 # 0 $a Engineering, Electronics and Electrical. $3 226981
690 $a 0544
710 0 # $a Stanford University. $3 212607
773 0 # $g 65-11B. $t Dissertation Abstracts International
790 $a 0212
790 1 0 $a Kazovsky, Leonid G., $e advisor
791 $a Ph.D.
792 $a 2005
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