Nonreciprocal coupled waveguides for integrated optical isolators and circulators for TM-modes

Bahlmann, N.; Lohmeyer, M.; Zhuromskyy, O.; Dötsch, H.; Hertel, P.

doi:10.1016/s0030-4018(99)00027-9

Cited by 52 publications

(39 citation statements)

References 22 publications

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“…It is al so accepted tha t the wi despread use of bi smuth and alum ini um do pi ng , reduces attenua ti on to even mo re acceptabl e l evels. Al l of these com ments serve to hi ghl i ght evidence tha t m agneto opti c devi ces are very pro mi sing candi dates for swi tchi ng and ro uti ng [5,6,18,19].…”

Section: Introductionmentioning

confidence: 97%

“…They ha ve to dep end hea vi l y up on wavegui de design, or som e other i deas, l i ke p ost-fabri cati on pro cessi ng , to overco m e weaknesses created by fa bri cati on to l erances [5]. The gl obal trends, howev er, show tha t i nteg ra ted [6] m agneto opti c devi ces are p oi sed to b ecome pi vota l to m any appl icati ons.…”

Section: Introductionmentioning

confidence: 99%

“…Ma gneto opti c m ateri al s are easil y created [6,16] but to overco me dom ai n e˜ects, they requi re the appl i cati on of an externa l m agneti c Ùeld [17] and i t i s Ùlms of m ateri al , l ike yttri um i ron garnet ( YIG ) tha t ha ve general l y a ttra cted attenti o n [5,6]. As can b e seen i n (1 ), g È E i s perp endi cular to E so an externa l m agneti c Ùeld creates o˜-di agona l elements i n the p erm i tti vi ty tenso r tha t are pro p orti onal to the i nduced magneti sati on.…”

Section: Introductionmentioning

confidence: 99%

“…The real l y i m porta nt appl i cati ons for m agneto opti c devi ces i ncl ude pi vo tal acti vi ty i n l aser contro l [7] thro ugh i sol ato rs and a l ot of e˜o rt has gone i nto pro ducti on and design [5], com pa ti bl e wi th l ow-lo ss no nreci pro cal circui ts. Bo th i sol ato rs and circul ato rs are requi red as pa rt of opti cal com munica ti on system s, wi th ci rcul ato rs, i n pa rti cular, f acil i tati ng ro uti ng capa bi l i ti es and two -way comm unica ti ons.…”

Section: Introductionmentioning

confidence: 99%

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Magnetooptics in Layered Nonlinear Structures

Boardman

Xie

2003

Acta Phys. Pol. A

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T h e m agnet oopt ics of an asymmet ric layere d w aveg uide structure is discussed to investigate the possibi lity of creating new devices that combine b oth nonrecipro city and nonlineari ty . A fter addressing some fundamental magneto optic prop erties and the kind of materials needed, a straightf orw ard envelop e theory is given that exploi ts the V oigt e˜ect instead of the more ob vious F araday e˜ect. I t is emphasised that this choice leads to desirable design features. It is prop osed that the intro duction of an applie d magnetic Ùeld to a w aveguide structure can be achieved through the use of thin current-carrying strips. It is emphasised that the strips can b e arranged to any degree of complexity and that a high degree of control over spatial soliton dynamics can be achieved. Spatial soliton light b eams are selected b ecause they can be generated, w ithin a w aveguide, in a stable form. T he attractive features of using the typ e of magneto optic w aveguide investigated here are highli gh ted w ith examples and it is concluded that the formats prop osed can be used for the fully integrated isolator capacity that mo dern laser systems demand. PACS numb ers: 42.65.T g, 42. 65. Wi, 42. 25. Fx, 78.20. Ls

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Magnetooptics in Layered Nonlinear Structures

Boardman

Xie

2003

Acta Phys. Pol. A

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“…Driven by industrial demands, much effort has been dedicated to the miniaturization and integration of these optical components in photonic circuits [1][2][3][4][5][6][7][8][9][10]. Along these lines, various prototypes with varying degrees of isolation efficiency (the ratio of backreflected light reaching the source to forward transmitted light) and forward transmission efficiency have been proposed and implemented.…”

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confidence: 99%

Enhancing optical isolator performance in nonreciprocal waveguide arrays

2014

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We investigate the operation of optical isolators based on magneto-optics waveguide arrays beyond the coupled mode analysis. Semi-vectorial beam propagation simulations demonstrate that evanescent tail coupling and the effects of radiation are responsible for degrading the device's performance. Our analysis suggests that these effects can be mitigated when the array size is scaled up. In addition, we propose the use of radiation blockers in order to offset some of these effects, and we show that they provide a dramatic improvement in performance. Finally, we also study the robustness of the system with respect to fabrication tolerances using the coupled mode theory. We show that small, random variations in the system's parameters tend to average out as the number of optical guiding channels increases.

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