7/28/2019 Nhm 10 CHUYN MCH QUANG
1/40
CHUYN MCH QUANGGVHD : ThS.V NGC CHM
NHM 10: Phm Vn t
Nghim Xun HngNguyn Tin Thong
Phan Hong Linh
BI THUYT TRNH
TI
6/12/20131
7/28/2019 Nhm 10 CHUYN MCH QUANG
2/40
I Gii thiu
chuyn
mchquang
II Kin trc
chuyn
mchquangMEMS
III Kt lun
Ni Dung
6/12/20132
7/28/2019 Nhm 10 CHUYN MCH QUANG
3/40
Gii thiu
6/12/20133
7/28/2019 Nhm 10 CHUYN MCH QUANG
4/40
S pht trin nhanh chng ca cc dch v mng bng
rng l ng lc thc y s pht trin ca mngquang th h k tip da trn nn tng cc cng nghghp knh phn chia bc sng (xWDM).
Trong tin trnh quang ha mng truyn thng, cc
ni cho quang OXC (Optical Cross-connects) vichc nng chuyn mch tuyn quang l cng nghquan trng ct li cho php tng cng kh nng png ca mng vi cc bin ng lu lng v ti u
cu hnh mng.
Gii thiu
6/12/20134
7/28/2019 Nhm 10 CHUYN MCH QUANG
5/40
Trn thc t, hu ht cc OXC hin nay ang sdng li chuyn mch in v cc chuyn iquang-in/in-quang (OE/EO) giao din vov ra ca trng chuyn mch.
Khi nhu cu tc d liu tng cao, do cc hnch v tc x l trong min in, cc OXCny tr ln cng knh, phc tp, hn ch vdung lng, tiu th ngun ln v gi thnh t
.
Gii thiu
6/12/20135
7/28/2019 Nhm 10 CHUYN MCH QUANG
6/40
=> V vy, nhm p ng kh nng nng cp tc d liu v trin khai cc giao thc mi trong
tng lai, cc OXC ton quang s dn thay th chocc OXC vi li chuyn mch in. Cc OXC ton quang ng dng chuyn mch
trong min quang vi kh nng nh
tuyn/chuyn mch tn hiu d liu quang mkhng cn n cc chuyn i OE/EO, do ,cho php chuyn mch c lp vi tc dliu v giao thc d liu vi tin cy cao, t
tiu tn ngun.
Gii thiu
6/12/20136
7/28/2019 Nhm 10 CHUYN MCH QUANG
7/40
Trong s cc cng ngh chuyn mch quangang c quan tm nghin cu v pht trin
ng dng nhm hin thc ha cc OXC tonquang, cng ngh chuyn mch quang MEMS,ni ln l cng ngh hng uv kh dng nhtv phng din thng mi thi im hin ti.
Cng ngh chuyn mch quang MEMS chophp thc hin chuyn mchc lp vi bcsng vi s lng cng vo/ra t c ln hn
nhiu so vi cc cng ngh khc.
Gii thiu
6/12/20137
7/28/2019 Nhm 10 CHUYN MCH QUANG
8/40
MEMS vit tt ca t Micro-ElectroMechanical
Systems c ngha l h thng vi c in. Chngc kch thc micro.
Thit b MEMS l mt mch tch hp cc cutrc vi c kh,cc b cm bin vi cc phn t
in t v s dng lc truyn ng tnh in, ttrng hoc nhit dch chuyn v iu khincc phn t thnh phn theo yu cu.
Kin trc chuyn mch MEMS
1. Gii thiu
6/12/20138
7/28/2019 Nhm 10 CHUYN MCH QUANG
9/40
Kin trc chuyn mch MEMS
1. Gii thiu
6/12/20139
7/28/2019 Nhm 10 CHUYN MCH QUANG
10/40
V nguyn l, cc h thng chuyn mchquang MEMS c th phn thnh hai loi khcnhau theo c ch iu khin sng nh sng lchuyn mch quang s dng c ch phn x
hoc khc x v chuyn mch quang s dng cch nhiu x hoc giao thoa.
Kin trc chuyn mch MEMS
1. Gii thiu
6/12/201310
7/28/2019 Nhm 10 CHUYN MCH QUANG
11/40
Trong loi th nht, cc thit b thc hin chc nng
chuyn mch bng cch iu khin mt hochng truyn dn ca lung nh sng thng qua cccu trc phn x hoc khc x.
i vi loi th hai, chc nng chuyn mch hay
iu khin hng c thc hin nh vo cc hiung nhiu x hoc giao thoa trong s dng ccchuyn ng c hciu chnh pha ca nhsng.
Kin trc chuyn mch MEMS
1. Gii thiu
6/12/201311
7/28/2019 Nhm 10 CHUYN MCH QUANG
12/40
Trong h thng chuyn mch quang MEMSiu chnh hng i ca lung nh sng(c th
bao gm mt bc sng hay mt nhm cc bcsng) theo hng yu cu bng c ch phn x
thng qua cc phn t chuyn mch l ccgng kch thcrtnh (vi gng).
Kin trc chuyn mch MEMS
1. Gii thiu
6/12/201312
7/28/2019 Nhm 10 CHUYN MCH QUANG
13/40
Cch thc t chc phi ghp cc vi gng trongtrng chuyn mch l yu t quyt nhncc c tnh ca mi trng chuyn mchquang MEMS.
Kin trc chuyn mch MEMS
1. Gii thiu
6/12/201313
7/28/2019 Nhm 10 CHUYN MCH QUANG
14/40
Cu trc h thng CM quang MEMS bao gm
cc phn t chuyn mch quang l cc vi gngv cc thu knh/cch tc kh nngiuchnh hng i ca lung sng t u vo nu ra yu cu ca trng chuyn mch.
c tnh ca cc vi gng ph thuc vo chtliu ch to gng: silic a tinh th (polysilicon)hoc silic n tinh th.
Kin trc chuyn mch MEMS
2. Cu to
6/12/201314
7/28/2019 Nhm 10 CHUYN MCH QUANG
15/40
Vi gng c th c iu khin theo c ch shoc tng t nh minh ha trong hnhv:
Kin trc chuyn mch MEMS
2. Cu to
6/12/201315
7/28/2019 Nhm 10 CHUYN MCH QUANG
16/40
Trong cc h thng chuyn mch quang MEMS s
dng c ch iu khin s, cc phn t vi gng c c nh hngv v tr vi gng ch mttrong hai trng thi: bt (ON-chn vo ng i calung sng) hoc tt (OFF-khng tc ng n
lung sng) => d dng iu khin. Mi u vochuyn mch yu cu mt dy N vi gng nghing450so vi hng nh sng vo trng chuyn mchtng ng vi N u ra chuyn mch.
Kin trc chuyn mch MEMS
2. Cu to
6/12/201316
7/28/2019 Nhm 10 CHUYN MCH QUANG
17/40
i vi cc h thng s dng c ch iu khin
tng t, cc phn t vi gng c khnngiu chnhc gc nghingso vihng nh sng ti v cc vi gng ny c
t c nhtrn ng di chuyn ca lungsng.
Kin trc chuyn mch MEMS
2. Cu to
6/12/201317
7/28/2019 Nhm 10 CHUYN MCH QUANG
18/40
i vi cc h thng s dng c ch iu khin
tng t, cc phn t vi gng c khnngiu chnhc gc nghingso vihng nh sng ti v cc vi gng ny ct c nhtrn ng di chuyn ca lungsng.
Kin trc chuyn mch MEMS
2. Cu to
6/12/201318
7/28/2019 Nhm 10 CHUYN MCH QUANG
19/40
Kin trc chuyn mch MEMS
3.
Ph
n
Loi Chuyn mch quang MEMS mt chiu
Chuyn mch quang MEMS hai chiu
Chuyn mch quang MEMS ba chiu
6/12/201319
7/28/2019 Nhm 10 CHUYN MCH QUANG
20/40
Chuyn mch quang MEMS 1chiu
Kin trc cbn ca mttrng
chuynmch quangMEMS mtchiuc
minh hatronghnh bn:
6/12/201320
7/28/2019 Nhm 10 CHUYN MCH QUANG
21/40
Hot ng: Lung nh sng cn chuyn mch ri
mng si quang u vo c chun trc bng hthng thu knhhng n phn t tn sc. Tnhiu DWDM u vo n phn t tn sc (cch t)s c phn tch thnh cc bc sng thnh phn.Mi bc sng sau c truyn n mt vi
gng MEMS tng ng c iu chnhhng phn x ph hp nhm n c si quangu ra theo yu cu v c kt hp vi cc bcsng khc thng qua phn t tn sc.
Chuyn mch quang MEMS 1chiu
6/12/201321
7/28/2019 Nhm 10 CHUYN MCH QUANG
22/40
NX: Kch thc ca trng chuyn mch tl tuyn tnh vi s lng knh bc sngquang. iu ny gip gim kch thc thitb, gi thnh v cng sut tiu th so vi cc
cng ngh chuyn mch ng dng MEMSkhc.
Chuyn mch quang MEMS 1chiu
6/12/201322
7/28/2019 Nhm 10 CHUYN MCH QUANG
23/40
6/12/201323
7/28/2019 Nhm 10 CHUYN MCH QUANG
24/40
Mt mng hai chiu ca cc vi gngchuyn mch sp xp theo cu hnh ngangdc c dng nh hng nh sngt cc si quang u vo n cc si quang
u ra tng ng ca trng chuyn mch:
Chuyn mch quang MEMS 2 chiu
6/12/201324
7/28/2019 Nhm 10 CHUYN MCH QUANG
25/40
Chuyn mch quang MEMS 2 chiu
6/12/201325
7/28/2019 Nhm 10 CHUYN MCH QUANG
26/40
u im cakin trc chuyn mchquang MEMS hai chiu l vi gngchc hai trng thi (ng hoc m), iu nyngha l trng thi ca vi gng c iu
khin dng logic s nn vic iu khin l rtd dng.
Chuyn mch quang MEMS 2 chiu
6/12/201326
7/28/2019 Nhm 10 CHUYN MCH QUANG
27/40
Hot ng:Trong trng chuyn
mch quang MEMS hai chiu, lung sng chuynmch c chun trcv truyn song song vi mtphng nn ca mng vi gng. Khi kch hot mtgng nm trn hng tng ng vi u vo calung sng, n chuyn ng ct vo ng i ca nhsng v nh hng nh sng n u ra tng ngvi ct cha vi gng, khi vi gng to mt gc450so vi hng n ca lung sng.B add & drop thm hoc bt knh quang.
Chuyn mch quang MEMS 2 chiu
6/12/201327
7/28/2019 Nhm 10 CHUYN MCH QUANG
28/40
Chuyn mch quang MEMS 2 chiu
6/12/201328
Chuyn ng ca gng v nh matrix 16x16 256 vi gng
7/28/2019 Nhm 10 CHUYN MCH QUANG
29/40
Chuyn mch quang MEMS 2 chiu
6/12/201329
7/28/2019 Nhm 10 CHUYN MCH QUANG
30/40
Chuyn mch quang MEMS 2 chiu
6/12/201330
Trng CM 16x16 vi 32 si quang
7/28/2019 Nhm 10 CHUYN MCH QUANG
31/40
Nhc im: Qung ng dch chuyn ca lungsng qua trng chuyn mch bin thin ph thucvo v tr cng vo/ra => suy hao qua trng chuynmch. S lng vi gng tng ln di dng bnhphngca s lng cng vo/ra, kch thc cachuyn mch quang MEMS 2D b gii hn vo
khong 32x32 hoc 1024 vi gng. Cc yu t chnhto ra s gii hn ny l kch thc ca chp vkhong cch tuyn nh sng phi truyn qua khnggian t do trong trng chuyn mch v s binthin suy hao t cngvo n cng ra.
6/12/201331
Chuyn mch quang MEMS 2 chiu
7/28/2019 Nhm 10 CHUYN MCH QUANG
32/40
6/12/201332
7/28/2019 Nhm 10 CHUYN MCH QUANG
33/40
Kin trc chuyn mch quang MEMS ba chiu
c xy dng bng cch s dng 2 mng vigng.
Trong kin trc ny, nghingca vi gngMEMS c th iu khin c theo khng gian
t do ba chiunh cu trc khung c kh vihai trc quay vung gc. Cu hnh c bn camt chuyn mch quang MEMS ba chiu vcu trc ca vi gng:
6/12/201333
Chuyn mch quang MEMS 3 chiu
7/28/2019 Nhm 10 CHUYN MCH QUANG
34/40
6/12/201334
Chuyn mch quang MEMS 3 chiu
7/28/2019 Nhm 10 CHUYN MCH QUANG
35/40
6/12/201335
Chuyn mch quang MEMS 3 chiu
Cng ging nh trong kin trc chuyn mch
quangMEMS hai chiu, chuyn mch quangMEMS ba chiu thc hin chuyn mch ton blung sng ti (c th l mt bc sng hocmt nhm cc bc sng) t si quang u vo
n si quang u ra theo yu cu => V vy, chai kin trc ny u yu cu cc b tch/ghpknh bc sngquang c lp vi trngchuyn mch.
7/28/2019 Nhm 10 CHUYN MCH QUANG
36/40
6/12/201336
Chuyn mch quang MEMS 3 chiu
Hot ngthit lp kt ni chuyn mch qua
trng chuyn mch quang ba chiu c thchin bng cch iu khin nghing hai vi gngtng ng mt cch c lp nh hng nhsng t u vo ti u ra c yu cu.
7/28/2019 Nhm 10 CHUYN MCH QUANG
37/40
6/12/201337
Chuyn mch quang MEMS 3 chiu
u im: Kin trc chuyn mch ny ph hp ch to cc trng chuyn mch c ln
vi s lng cng vo/ra ln n hng ngn.c bit l kin trc chuyn mch ny mbo suy hao xen thp v ng nht, t phthuc bc sng di cc iu kin hot ng
khc nhau. suy gim ca t l tn hiu trnnhiu SNR i vi tn hiu quang qua trngchuyn mch, tham s ch yu b gy ra doxuyn m, suy hao ph thuc phn cc v tn
sc/tn sc phn cc, l nh nht.
7/28/2019 Nhm 10 CHUYN MCH QUANG
38/40
6/12/201338
Chuyn mch quang MEMS 3 chiu
Nhc im:NSX cn phi thit k thit b vi slng vi gng ln hn so vi s lng thc t yucu trong khi vic kt hp s lng ln cc vigng, kim tra v nh chun cho cc phn tchuyn mch cn rt nhiu thi gian honthnh. Mt khc, chuyn mch quang MEMS bachiu cn yu cu h thng iu khin vng kn
phc tpvi chnh xc cao iu khin cc vigng v mi gng li i hi h thng iu khinring rnn gii php ny c xu hng tr nn t, yu cu kch thc thit b ln hn v tiu th
nhiu ngun hn.
7/28/2019 Nhm 10 CHUYN MCH QUANG
39/40
6/12/201339
So snh CN chuyn mch quang
7/28/2019 Nhm 10 CHUYN MCH QUANG
40/40
Hin nay, cng ngh quang MEMS angnhn c squan tm c bit v chophp hin thc hacc hthng chuyn mch ton quang.
Cng ngh chuyn mch quang MEMSc kh nng chophp ch to trng chuyn mch c ln c lp vibc sng, tiu th in nng t, tin cy cao, suyhao xen thp v d dng nng cpvi chi ph hp l.
Bn cnh cc chuyn mch quang, cng ngh MEMSquang cn ang c tp trung nghin cu v pht trinng dng cho nhiu thit b quang khc nh b suy gimquang bin i c, laser kh chnh hay cc b lc
6/ /
Kt Lun
Top Related