AI SearchEfficient locationing of dispersion compensating fibers for optical fiber communication systems (Record no. 35561)
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| fixed length control field | 04028nas a2200385 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818095402.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 100419s2009 th uu|m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12074810 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.TC-09-14 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Pham Ngoc Luat |
| 245 10 - TITLE STATEMENT | |
| Title | Efficient locationing of dispersion compensating fibers for optical fiber communication systems |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2009 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 64 leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. TC-09-14 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications, School of Engineering and Technology |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 2009 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | This thesis investigates how to efficiently locate dispersion compensating fibers (DCFs) in wavelength division multiplexing (WDM) systems. Using standard single mode fibers (SSMFs) as the transmission medium, we first model a transmission link as a discrete-time filtered channel to quantify the amount of pulse spreading due to chromatic dispersion. Pulse spreading is measured in term of the intersyrnbol interference (ISI) length, where the length of zero corresponds to effectively no pulse spreading. Numerical results indicate that the use of a single DCF on a transmission link is sufficient to cancel out chromatic dispersion for a single-wavelength system at 1,550 nm, a WDM system with the transmission band 1,534.8-1,566 nm and a WDM system with multiple types of fibers connected in series. Based on the above transmission link model, we consider the problem of locating DCFs in WDM ring networks. Assuming that each DCF is designed to completely cancel out the dispersion on its link for the center wavelength of 1,550 nm, we cast the problem of minimizing the number of DCFs as an integer linear programming (ILP) problem subject to the constraints on the maximum allowable end-to-end dispersion for each transmission path. The maximum dispersion value is obtained from the previous ISI length computation. Optimal DCF locations are solved using the optimization tool in MATLAB. In the presence of amplified spontaneous emission (ASE) noise from erbium doped fiber amplifiers (EDFAs) and signal attenuation on transmission links, having fewer DCFs in the system not only reduces the equipment costs but also leads to lower bit error rates (BERs), as demonstrated from the BER analyses based on the obtained optimal DCF locations. Finally, we consider the problem of minimizing the total length (instead of the total number) of DCFs in the system. In this problem, each DCF need not fully cancel out the dispersion on its link as long as the end-to-end dispersion for each transmission path is within the maximum allowable dispersion limits. We cast the problem as a linear programming (LP) problem to be solved by MATLAB. Numerical results demonstrate further improvement on the BERs compared to minimizing the number of DCFs. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Optical fiber communication |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Poompat Saengudomlert, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Teerapat Sanguankotchakorn, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rajatheva, R.M.A.P, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Electricity of Vietnam (EVN), |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. TC-09-14 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B04060 ">http://203.159.5.9/ait-thesis/detail.php?q=B04060 </a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12074810 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240329 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 100419 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | u |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120811335 |
| CREATED | CREATED : 2014-04-21 |
| RECORD Id | RECORD # : i12790795 |
| LPATRON | LPATRON : 0 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160043369 |
| CREATED | CREATED : 2016-03-17 |
| RECORD Id | RECORD # : i12895222 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.TC-09-14 | 30050120811335 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.TC-09-14 | 30050160043369 | 18/08/2026 | 18/08/2026 | 40-Archives |