Modeling and design of arrayed waveguide gratings

Muñoz, Pascual; Pastor, D.; Capmany, J.

doi:10.1109/50.996587

Cited by 114 publications

(98 citation statements)

References 17 publications

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“…Because of its low insertion loss, high stability and high wavelength resolution, AWG is the most promising device for filters and multi/demultiplexers in Wavelength-Division Multiplexing (WDM) systems (Pascual et al, 2002). The manufacture quality of AWG directly affects its performance and integration level.…”

Section: Finishing Of Awg Mouldmentioning

confidence: 99%

Abrasive Jet Polishing and its Applications in Surface Finishing

Li¹

2010

American Journal of Nanotechnology

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Problem statement: Single Point Diamond Turning (SPDT) is highly deterministic and versatile in producing various forms of precise optics. A typical example is the production of large offaxis aspheric mirrors and various infrared mirrors and mandrels. However, the fine periodical turning marks left in the surface critically limit its performance and they are difficult to be avoided for traditional polishing methods. Approach: This study introduced abrasive jet polishing to remove the periodical turning marks. Firstly the principle of abrasive jet polishing technique was described. Then combined with theoretical study, Computational Fluid Dynamics (CFD) simulation and process experiments, the mechanism of the material removal in abrasive jet polishing was analyzed. It was concluded that the wall shear stress of micro-abrasives is the main cause of material removal in this process. Based on this, abrasive jet polishing experiment was carried out on plane copper sample and the surface of Arrayed Waveguide Grating (AWG) which were machined after SPDT. Results: After polishing the periodical ripples on copper sample left by SPDT were removed completely and the Ra value of the sample decreases from 11nm to 3nm. In addition, the burrs and pits on the surface of AWG Mould after SPDT are removed successfully with this technique, which solves an intractable problem in manufacture area. Conclusion: In this experiment it was found that abrasive jet polishing technique has its inimitable advantages in removing the periodical turning marks and finishing the AWG mould and it will have a broad prospect of applications in modern precision manufacture area.

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Section: Finishing Of Awg Mouldmentioning

confidence: 99%

Abrasive Jet Polishing and its Applications in Surface Finishing

Li¹

2010

American Journal of Nanotechnology

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“…Integrated multiplexers and demultiplexers are commonly based on phased-array WDM technology. In these devices, wavelength dispersion is provided by an array of waveguides (WGs), with length calculated so that constructive interference is granted at each output WG for a different wavelength [1][2][3][4][5][6][7][8]. By applying a phase shift to the arms, a dynamic allocation of the channels can be accomplished, giving rise to new functionalities.…”

Section: Introductionmentioning

confidence: 99%

“…One layout uses free propagating regions (FPRs) [3][4][5][6][7] as power splitters and combiners [8], while multi-mode interference (MMI) couplers are employed in the other layout. A dynamic allocation of the different wavelengths channels can be accomplished by adjusting the applied acoustic power.…”

Section: Introductionmentioning

confidence: 99%

Acoustically driven arrayed waveguide grating

et al. 2015

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Abstract:We demonstrate compact tunable phased-array wavelengthdivision multiplexers driven by surface acoustic waves (SAWs) in the low GHz range. The devices comprise two couplers, which respectively split and combine the optical signal, linked by an array of single-mode waveguides (WGs). Two different layouts are presented, in which multi-mode interference couplers or free propagating regions were separately employed as couplers. The multiplexers operate on five equally distributed wavelength channels, with a spectral separation of 2 nm. A standing SAW modulates the refractive index of the arrayed WGs. Each wavelength component periodically switches paths between the output channel previously asigned by the design and the adjacent channels, at a fixed applied acoustic power. The devices were monolithically fabricated on (Al,Ga)As. A good agreement between theory and experiment is achieved.

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“…In these optical networks, a variety of optical components such as wavelength-division multi/demultiplexers (MUX/DEMUXs), erbium-doped fiber amplifiers (EDFAs), lasers, photodetectors [2][3][4], and modulators are indispensable for constructing optical networks [1]. Among others, arrayed waveguide grating (AWG)-type MUX/DEMUXs based on the optical planers circuits (PLCs) have played an important role as a key optical component for DWDM.…”

Section: Introductionmentioning

confidence: 99%