Long Period Grating Sensors

8/4/2019 Long Period Grating Sensors

1/31

Fdyl{dsjfp *Gav'E|`v, ;?11& [lpm{y

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SY\IV MB @MDN _L[FMI N[AYFDN SLDSFYFRFYV *YLG_L[AY\[L ADI

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2/31

Cmdyldys5'

1$ Achdm~`linlgldy

;$ Fdy{mi|cyfmd

3$ Yjlm{v

3$1 Gmil Bfl`is fd ad Mpyfca` Bfkl{

3$; @mdn _l{fmi Bfkl{ N{ayfdn*@_BN&

3$3 Cm|p`fdn fd @_BN

3$9 Sldsfyfrfyv mb @_BN

9$ Lzpl{fgldy

9$1 Ylgpl{ay|{l adi sy{afd sldsfyfrfyv bm{ @_BNs mb ifbbl{ldy pl{fmi

9$; Ifsc{fgfdayfmd mb ylgpl{ay|{l adi sy{afd

9$3 Ifsc|ssfmd


3/31

1$Achdm~`linlgldy

F ~m|ì `fhl ym achdm~`linl adi lzyldi gv jla{yv n{ayfy|il ym _{mb$ E$_$Gl|dfl{ adi I{$

Lggad|l` Ga{fd bm{ yjlf{ cmdyfd|m|s s|ppm{y, bllikach adi lzpl{fldcl sja{fdn i|{fdn

yjfs p{melcy$ Cmggldys b{mg kmyj mb yjlg mrl{ gv ~m{h ~l{l {la``v jl`pb|` fd

s|cclssb|` cmgp`lyfmd mb gv fdyl{dsjfp$ ^fyjm|y yjlf{ jl`p fy ~as dmy pmssfk`l ym

cmgp`lyl yjfs p{melcy s|cclssb|``v$ F ~m|ì a`sm `fhl ym yjadh bm{ myjl{ s|ppm{ys apa{y

b{mg p{melcy ~m{h$ F `mrli ~m{hfdn ~fyj yjlg adi ~m|ì `mrl ym ~m{h ~fyj yjlg fd

b|y|{l$

F {la``v `mrli gv bf{sy syav fd L|{mpl$ A`yjm|nj yjl{l ~as a p{mk`lg mb àdn|anl k|y

yjlsl ;$< gmdyjs a{l |dbm{nlyyak`l iavs mb gv `fbl$ F ~f`` a`~avs {lglgkl{ yjfs

kla|yfb|` cfyv mb Safdy Lyflddl adi fys c|`y|{l$

F ~m|ì a`sm `fhl ym yjadh \dfrl{sfyv Elad Gmddly bm{ bfdadcfa` s|ppm{y adi Fdifad

Fdsyfy|yl mb Ylcjdm`mnv, Il`jf bm{ p{mrfifdn gl yjfs n{lay mppm{y|dfyv$


4/31

;$ Fdy{mi|cyfmd

Yjl p{fgl mkelcy mb yjfs fdyl{dsjfp fs ym ilrl`mp a sldsm{ kasli md `mdn pl{fmi

bfkl{ n{ayfdn *@_BN& ym ifsc{fgfdayl kly~lld ylgpl{ay|{l adi sy{afd$ A @_N jl`ps

ym gaycj yjl pjasl mb cm{l gmils ym c`aiifdn gmils adi yj|s pm~l{ b{mg cm{l

gmil fs y{adsbm{gli ym c`aiifdn gmils$ Yjlsl gmils ayyld|ayl {apfi`v fd yjl

bfkl{ adi jldcl `fnjy ay yjl pjasl gaycjli ~arl`ldnyj fs `msy b{mg yjl bfkl{$

Yj|s, yjfs cm|p`fdn {ls|`ys fd bm{gayfmd mb ayyld|ayfmd kadis *ca``li gyj gmil&

fd yjl mpyfca` splcy{|g mb @_N$ Yjlsl ayyld|ayfmd kadis *{lsmdadcl ~arl`ldnyj

m{ plahs& a{l sldsfyfrl ym slrl{a` bacym{s fdc`|ifdn sy{afd adi ylgpl{ay|{l$ Sm

~jld yjlsl bacym{s cjadnl, yjl{l fs a ~arl`ldnyj sjfby fd yjl ayyld|ayfmd kadis

~jfcj fs gmil ilpldildy$ Sm kv |sfdn y~m *m{ gm{l& plahs adi glas|{fdn yjl

~arl`ldnyj sjfby, ~l cad ilyl{gfdl yjl app`fli sy{afd adi ylgpl{ay|{l$

Fd yjfs fdyl{dsjfp ~l fdyldi ym fgp{mrl yjl ilyl{gfdayfmd mb ylgpl{ay|{l adisy{afd kv |sfdn gm{l yjad y~m plahs$


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3$ Yjlm{v

3$1 Sylp Fdilz mpyfca` bfkl{

Fd a sylp Fdilz bfkl{, yjl cm{l adi càiifdn jarl |dfbm{g {lb{acyfrl fdifcls ~fyj cm{l jarfdn

jfnjl{ {lb{acyfrl fdilz$ Yjl {lb{acyfrl fdilz ilc{lasls sja{p`v ay yjl cm{l'càiifdn fdyl{bacl$

Bfn$1$Ifan{ag mb a c{mss slcyfmd mb a b fkl{ nlmgly{v cmdsfil{li jl{l, sjm~fdn yjl cv`fdi{fca` cmm{ifdayl svsylg,

yjl {lb{acyfrl fdilzls, adi yjl {aiff mb yjl cm{l*& adi mb yjl càiifdn*&$Lzagp`ls mb syadia{i cm{l adi càiifdn ifaglyl{s ;-; a{l :-1;


6/31

{aifa` cmm{ifdayl svsylg *{,,u& ~f`` kl klsy bm{ yjl mpyfca` bfkl{ nlmgly{v nfrld akmrl$ Dm~ bm{ilpldifdn md`v md yjl {aifa` cmm{ifdayls*{&, ~l gav ~{fyl

*;&

fs yjl adn|`a{ b{lq|ldcv adifs p{mpanayfmd cmdsyady$ S|ksyfy|yfdn fd lq|ayfmd *1&, ~lmkyafds $ - ? 1 *3&Fd cv`fdi{fca` cmm{ifdayls, akmrl lq|ayfmd klcmgls,

, ' *9&Yjl sm`|yfmd mb yjfs lq|ayfmd ~f`` nfrl p{mpanayfmd cmdsyady *lfnld ra`|l& mb gmils *lfnldb|dcyfmds& p{mpanayfdn fd yjl bfkl{ as nfrld fd lq|ayfmd *;&$

Yjl y{adsrl{sl ilpldildcl mb gmia` bfl`i fs yjld nfrld kv

$ - $ -

*&

A`sm dm{ga`fuli p{mpanayfmd cmdsyady, k fs ilbfdli as,

*:&_{mpanayfmd cmdsyady *m{ & a{l yjld bm|di kv sm`rfdn bm``m~fdn lfnldra`|l lq|ayfmd,


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,',' ,',' *6&Adi

,',' ,',' *1?&Bm{ a nfrld ra`|l mb R adi bfzli `, yjl{l ~f`` kl bfdfyl d|gkl{ mb sm`|yfmds bm{ kadi yjl gyj sm`|yfmd

*g71,;,3,& fs {lbl{{li ym as yjl gmil *`fdla{`v pmà{fsli&$3$3 @mdn _l{fmi Bfkl{ N{ayfdn

A bfkl{ n{ayfdn fs a ifl`lcy{fc sy{|cy|{l fd ~jfcj {lb{acyfrl fdilz ra{fls pl{fmifca``v a`mdn yjlbfkl{$ Fd cmdy{asy ym a Bfkl{ K{ann N{ayfdn *BKN&, yjl pl{fmi mb ad @_BN fs mb yjl m{il{ mb a

b{acyfmd mb gf``fglyl{ *1?? mb gfc{mglyl{s&$ @ldnyj mb ad @_BN fs bl~ cldyfglyl{s$ Fy cm|p`ls

`fnjy b{mg a n|fili gmil ym bm{~a{i p{mpanayfdn càiifdn gmils ~jfcj fs yjld `msy i|l ym

aksm{pyfmd adi scayyl{fdn$ Yjfs cm|p`fdn fs rl{v g|cj ~arl`ldnyj ilpldildy ~jfcj {ls|`ys fd

splcy{a``v sl`lcyfrl `mss$ Fd cmgpa{fsmd ym BKNs, @_Ns a{l lasv ym bak{fcayl adi jarl klyyl{

~arl`ldnyj y|dakf`fyv$

Bfn$;$ Cm|p`fdn mb b|diagldya` n|fili gmils ym càiifdn gmils fd a @_BN

Yjl gmsy ~fil`v |sli glyjmi bm{ fdy{mi|cfdn fdilz gmi|àyfmd fd Nl'impli sf`fca

bfkl{s fs \R àsl{ f{{aifayfmd ~fyj ~arl`ldnyjs yvpfca``v kly~lld 163 adi ;22 dg X3W$ Yjl

pjmymsldsfyfrfyv mb bfkl{ fs fdc{lasli kv jvi{mnld `maifdn$ Yjl lzpms|{l mb bfkl{ ym \R `fnjy fsimdl yj{m|nj ad agp`fy|il gash$

3$9 @_BN Cm|p`fdn

Cmdsfil{ a sfdn`l'gmil bfkl{ ~fyj yjl p{mpanayfmd cmdsyady mb yjl b|diagldya` gmil, ,ildmyli kv adi a`sm ass|gl yjay p{mpanayfmd cmdsyady mb yjl càiifdn gmils a{l nfrld kv


8/31

, ~jl{l yjl s|pl{sc{fpy ildmyls yjl m{il{ mb gmil X9W$ Yjl {làyfrl pmsfyfmd mb yjlp{mpanayfmd cmdsyadys a{l sjm~d fd yjl bfn|{l *3&$ fs pl{fmi mb n{ayfdn$

Bfn$3$ _jasl gaycjfdn cmdsfil{ayfmds bm{ yjl `mdn pl{fmi bfkl{ n{ayfdn

Yjl sy{ldnyj mb cm|p`fdn kly~lld yjl cm{l gmil adi yjl càiifdn gmils fs ilyl{gfdli kv

cm|p`fdn cmlbbfcfldy *h &$ Yjfs cmlbbfcfldy fs ul{m bm{ a`` càiifdn gmils myjl{ yjad 1sy m{il{gmil$ Sm ~l dlli ym cmdsfil{ md`v bf{sy m{il{ càiifdn gmils$

As pl{fmi mb @_BN fs cmgpa{ayfrl`v à{nl{ *m{ ;- fs sga``&, sm fy cad cm|p`l a bm{~a{i

p{mpanayfdn gmil ym md`v bm{~a{i p{mpanayfdn càiifdn gmil$ Yjl pjasl gaycjfdn cmdifyfmdkly~lld n|fili gmil adi yjl bm{~a{i p{mpanayfdn càiifdn gmils fs nfrld kv

8 *11&As a{l ~arl`ldnyj ilpldildy, sm ~jld `fnjy passls yj{m|nj @_BN, ~l mkyafd plahsfd yjl y{adsgfssfmd splcy{|g cm{{lspmdifdn ym yjl ~arl`ldnyj ~jfcj sayfsbfls yjl pjasl

gaycjfdn cmdifyfmd$ Yjl y{adsgfssfmd splcy{|g bm{ ad @_BN *SGB';: bfkl{& ~fyj pl{fmi mb ;6?

g fs nfrld fd yjl bfn|{l *9&$ d {lp{lsldys yjl m{il{ càiifdn gmil$


9/31

Bfn$9$ Y{adsgfssfmd splcy{|g bm{ a @_BN mb pl{fmi ;6? g *SGB';:&

3$< @_BN Sldsfyfrfyv

\d`fhl BKNs fd ~jfcj cm|dyl{'if{lcyfmda` cm|p`fdn mcc|{s fd yjl cm{l, cm'if{lcyfmda` cm|p`fdn fd

@_BNs fs kly~lld a cm{l adi a c`aiifdn gmil, yjfs {ls|`ys fd yjay @_BNs a{l dmy md`v sldsfyfrl ym

ylgpl{ay|{l Y adi azfa` sy{afd, k|y a`sm ym kldifdn ca|sfdn a c|{ray|{l C, ym jvi{msyayfc

p{lss|{l p, ym agkfldy {lb{acyfrl fdilz adi ym ym{sfmd cjadnls$ X


10/31

*& &( *19&

fs yjl lbblcyfrl {lb{acyfrl fdilz mb p{mpanayfdn cm{l gmil adi

fs yjl lbblcyfrl

{lb{acyfrl fdilz mb fyj c`aiifdn gmil$ @ fs yjl `ldnyj mb @_BN$

9$ Lzpl{fgldy

Yjl @_BNs ~l{l bak{fcayli |sfdn SGB';: bfkl{ kv \R @asl{ f{{aifayfmd *_jasl gash ylcjdfq|l&$

^l bak{fcayli @_BNs mb ifbbl{ldy pl{fmis$

Yjl kasfc fila bm{ ifsc{fgfdayfdn kly~lld sy{afd adi ylgpl{ay|{l |sfdn a @_BN fs yjay yjl

sldsfyfrfyv mb y{adsgfssfmd plahs i|l ym cm|p`fdn kly~lld bfkl{ cm{l gmil adi c`aiifdn gmils

fs gmil ilpldildy$ Fb ~l app`v sy{afd adi ylgpl{ay|{l sfg|`yadlm|s`v ym ad @_BN, yjl

~arl`ldnyj sjfby ~f`` kl nfrld as *1


11/31

|sfdn kmyj ~fyj ; gmils adi gm{l yjad y~m gmils$ Yjl akmrl mrl{ilyl{gfdli svsylgs a{l

sm`rli app{mzfgayl`v |sfdn yjl lasy sq|a{l sm`|yfmds$

F$ _l{fmi 7 ;6? g

Bfn$


12/31

Bfn$2$ ^arl`ldnyj sjfby bm{ ifbbl{ldy gmils ~fyj ylgpl{ay|{l

Yjl ylgpl{ay|{l sldsfyfrfyv cmlbbfcfldys bm{ plahs A, K adi C a{l >3$:3, < adi 96$?: *pg-H&

{lsplcyfrl`v$

Bfn$>$ ^arl`ldnyj sjfby bm{ ifbbl{ldy gmils ~fyj sy{afd


13/31

Yjl sy{afd sldsfyfrfyv cmlbbfcfldy bm{ plahs A, K adi C a{l ?$1


14/31

Bfn$:$ Y{adsgfssfmd splcy{|g mb ad @_BN mb pl{fmi ;>? g sjm~fdn ifbbl{ldy plahs

Bfn$6$ ^arl`ldnyj sjfby bm{ ifbbl{ldy gmils ~fyj ylgpl{ay|{l


15/31

Yjl ylgpl{ay|{l sldsfyfrfyv cmlbbfcfldys bm{ plahs A, K adi C a{l 2;$69, 3>$29, '?$;>:1 adi '?$12 *pg-&

{lsplcyfrl`v$

Yjl sldsfyfrfyv gay{fz fs

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16/31

Lzpl{fgldya` Ca`c|àyli*|sfdn A, K

adi C&

L{{m{ Ca`c|àyli*|sfdn

A adi K&

L{{m{

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FFF$ _l{fmi7;?? g


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Bfn$11$ Y{adsgfssfmd splcy{|g mb ad @_BN mb pl{fmi ;?? g sjm~fdn ifbbl{ldy plahs

Bfn$1;$ ^arl`ldnyj sjfby bm{ ifbbl{ldy gmils ~fyj ylgpl{ay|{l


18/31

Yjl ylgpl{ay|{l sldsfyfrfyv cmlbbfcfldys bm{ plahs A, K adi C a{l >2$;2, 92$69 adi 36$;2

*pg-H& {lsplcyfrl`v$

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Yjl sy{afd sldsfyfrfyv cmlbbfcfldys bm{ plahs A, K adi C a{l ?$::29, ?$?1< adi '?$??:;

{lsplcyfrl`v$


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19/31

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20/31

Bfn$1


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Bfn$12$ ^arl`ldnyj sjfby bm{ ifbbl{ldy gmils ~fyj sy{afd

Yjl sy{afd sldsfyfrfyv cmlbbfcfldy bm{ plahs A, K, C adi I a{l 1$>9;1, '?$;


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Lzpl{fgldya` Ca`c|`ayli L{{m{

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{lsplcyfrl`v$


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Long Period Grating Sensors

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