Seminar Mng thng tin.

Mng thng tin quang th h mi Tiu lun: Tng quan v chuyn mch quang Hc vin:Nguyn Thanh BnhBi Tin tNguyBn Mnh cBi Nguyn Bo1Ni dungGii thiuNhng ng dng ca b chuyn mch quangCc cu trc ca b chuyn mch quangB chuyn mch quang kch thc lnCc cng ngh chuyn mch quang (OPS, MPLS, OBS21. Gii thiu Mng thng tin quang:

* Dng nh sng truyn tn hiu: bng thng rng, truyn c xa, suy hao thp, tuy nhin cha c b nh quang,

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Optical Switch4Mc lch s:1958: Pht minh tia LaserGia nhng nm 1960: Truyn c sng quang1970: Sn xut si quang suy hao thpNhng nm 70-80: ng dng si quang trong mng in thoiGia nhng nm 80: ng dng trong mng LAN/MANNm 1988: Tuyn cp quang xuyn i Ty Dng u tinCui nm nhng nm 80: Pht trin b khuch i quangNhng nm 90: Bng n cc h thng DWDMHin nay: Pht trin mng quang thng minh

2. ng dng ca b chuyn mch quangu im ca chuyn mch quang:Tc chuyn mch: nhanh gp hng trm ln tc chuyn mch in tKch thc rt nh gnGim in nng tiu th so vi chuyn mch in tGim cc vn v giao thc mngCi thin bng thngGi thnh thp

52. Conts.u cho quang (OXCs)Cho php chuyn mch tn hiu t 1 cng u vo n mt hay nhiu cng u ra u cho quang li l chuyn mch in t (O/E/O): tc chuyn mch chm, kh nng m rng km, gi thnh caou cho quang li l chuyn mch quang (O/O/O): tc chuyn mch nhanh, kh nng m rng d dng, kch thc nh, gi thnh thp. Tuy nhin: chc nng qun l mng cha th thc hin hon ton, trn min quang u cho lai: li chuyn mch l quang nhng tch hp cc thit b in t thc hin chc nng qun l, kim sot li

62. Conts.b. Chuyn mch bo v (Protection Switching)Cc thit b chuyn mch t cngB sung dung lng cho mng khi c liXc nh ngun gc li v thng bo cho nt khcc. B Add/Drop knh quang (Optical Add/Drop Multiplexing)Chn/tch bc sng n t lung quangChuyn mch tn hiu u vo theo mt s bc sng c la chn

72. Conts.d. Qu trnh gim st tn hiu quangTn hiu quang c trch thm, phn chia thnh cc bc sng ring l v gim st cc thng s B chuyn mch quang cho ng dng gim st: phi c t s dp tt cao, tn hao chn thp v ng u vi tt c bc snge. D liu cho mngng dng chuyn mch quang cu hnh li mng trong thi gian ngn

83. Cc cu trc ca b chuyn mch quangThng s nh gi mt b chuyn mch quang:Tn hao chnNhiu xuyn mT s dp ttTn hao c lp phn cc tin cyTiu th nng lngKh nng m rngKch thc, gi thnh, ...

93. Conts.Chuyn mch Quang-CSn phm thng mi u tin ca b chuyn mch quangCu to: lng knh, gng, cc b ghp nh hng

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Cu hnh b chuyn mch Quang c n sc c bn3. Conts.u im: Tn hao chn, nhiu phn cc c lp, nhiu xuyn m thpGi thnh thpNhc im: Tc chuyn mch vi mili giyKh nng m rng km

113. Conts.b. Chuyn mch C-Vi in t (MEMS)MEMS 1 chiu:

Chc nng ghp/tch knh bc sng quang c thc hin nh phn t tn sc

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3. Conts.b. Chuyn mch C-Vi in t (MEMS)MEMS 2 chiu:

Chuyn mch thc hin bi cc gng siu nh c iu khin hai chiu

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3. Conts.b. Chuyn mch C-Vi in t (MEMS)MEMS 3 chiu:

Gng di ng dnh ring cho mi cng u vo v u ra: Thut ton iu khin rt phc tp

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3. Conts.c. Chuyn mch Quang-inB ghp lm t vt liu Lithium Niobate (LiNbO3)

in p c a vo cc bn cc thay i h thng khc x ca b mt vt liu, iu khin ng i tia sng n cng ra mong mun Thi gian chuyn mch nhanh (nano giy), tn hao chn ln

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3. Conts.d. Chuyn mch quang nhit Thay i h s khc x do hiu ng nhit. C hai loi: Chuyn mch giao thoa

Tng nhnh c t nng, lm thay i pha ca chm sng. Thnh phn giao thoa cng hng hoc trit tiu tng ng u ra cc i hay cc tiu

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3. Conts.Chuyn mch quang s

Sai lch pha ca hai chm tia ti hai nhnh s xc nh cng u ra c chnNhit t nng mi nhnh s thay i h s khc x v tia sng c truyn ti mt ng ny nhiu hn ng kia

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3. Conts.e. Cc b chuyn mch tinh th lng Cc tinh th c tnh nh hng nh in p a vo

Tn hiu c iu khin trng thi phn cc bng mt khc x kp. in p a vo iu khin b iu bin khng gian. B chia phn cc s iu khin chm tia n cc u ra khc nhau

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3. Conts.f. Chuyn mch l trng

Ti lp y hai ng dn to gc 120 , giao im c 1 h lm cha silica. Khi h thng c t nng, h s khc x h lm thay i lm chuyn hng tia sng theo ng mong mun.

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3. Conts.g. Chuyn mch quang mDa vo hiu ng m thanh thay i tnh cht v mt vt liu

Cu trc ny tng ng vi mt cch t di chuyn c th khp pha vi mt bc sng c la chn. Mt tn hiu khp pha c lt t mode TM sang mode TE v ngc li. Do , b chia chm tia phn cc b tr ti u ra s chuyn tn hiu khp pha n u ra thp hn. Tn hiu khng c khp pha s chuyn n u ra cao hn.

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3. Conts.h. Chuyn mch quang bn dn (SOAs)Chuyn mch ON/OFF bng in p phn hiTnh cht khuc i trng thi ON v hp th trng thi OFF

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3. Conts.Bng so snh tham s cc b chuyn mch quang:

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4. Cc b chuyn mch kch thc lnCc phng thc xy dng nn cc b chuyn mch quang kch thc ln:u choChuyn mch u cho nxn to thnh t n2 b chuyn mch 2x2

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4. Const.b. Cu trc BenesMt b chuyn mch Benes nxn s dng (n/2)(2log2n-1) b chuyn mch 2x2

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4. Const.c. Cu trc SpankeBenes (Cu trc Planar n-trng thi)B chuyn mch nxn c ghp t n(n-1)/2 b chuyn mch 2x2 thnh phn

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4. Const.d. Cu trc SpankeMt b chuyn mch nxn c to thnh bi vic kt hp n b chuyn mch 1xn vi n b chuyn mch nx1

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5. Cc cng ngh chuyn mch quanga. Chuyn mch gi quang

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5. Cc cng ngh chuyn mch quangb. Chuyn mch nhn a giao thc MPLS

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5. Cc cng ngh chuyn mch quangc. Chuyn mch quang chm

2930Thank you and Questions?