Abstract

We proposed an integrated wavelength-selective photodetector based on a grating-assisted contra-directional coupler and a graphene absorption layer for a coarse wavelength division multiplexing (CWDM) communication system. The center wavelength of the absorption spectrum of the proposed device can be tuned simply by changing the period of the grating, and the proposed device structure is suitable to forming a cascaded structure. Therefore, an array of the proposed device of different grating periods can be used for simultaneous wavelength demultiplexing and signal detection in a CWDM communication system. Our theoretical study showed that the designed device with a grating length of 500 μm could have an absorption of 95.1%, an insertion loss of 0.2 dB, and a 3 dB bandwidth of 7.5 nm, resulting in a −14 dB crosstalk to adjacent CWDM channels. We believe that the proposed device array can provide a compact and economic solution to receiver implementation in the CWDM system by combining functions of wavelength demultiplexing and signal detection.

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  13. A. Pospischil, M. Humer, M. M. Furchi, D. Bachmann, R. Guider, T. Fromherz, and T. MuellerCMOS-compatible graphene photodetector covering all optical communication bandsNat. Photon.2013711892896
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  19. M. Kim, C. Y. Jung, H. Heo, and S. KimOptical reflection modulation using surface plasmon resonance in a grapheneembedded hybrid plasmonic waveguide at optical communication wavelengthOpt. Lett.201540871874
  20. T. Q. Tran, S. Lee, and S. KimTunable wide-angle tunneling in graphene-assistied frustrated total internal reflectionSci. Rep.2016619975
  21. A. Farmani, M. Miri, and M. H. SheikhiTunable resonant Goos-Hänchen and Imbert-Fedorov shifts in total reflection of terahertz beams from graphene plasmonic metasurfacesJ. Opt. Soc. Am. B201734610971106
  22. M. Bruna and S. BoriniOptical constants of graphene layers in the visible rangeAppl. Phys. Lett.2009943031901
  23. S. S. Orlov, A. Yariv, and S. V. EssenCoupled-mode analysis of fiber-optic add-drop filters for dense wavelengthdivision multiplexingOpt. Lett.19972210688690
  24. S. Olivier, H. Benisty, C. Weisbuch, C. J. Smith, T. F. Krauss, and R. HoudréCoupled-mode theory and propagation losses in photonic crystal waveguidesOpt. Express2003111314901496
  25. A. Farmani, M. Miri, and M. H. SheikhiAnalytical modeling of highly tunable giant lateral shift in total reflection of light beams from a graphene containing structureOpt. Commun.20173916876
  26. G. W. HansonDyadic Green’s functions and guided surface waves for a surface conductivity model of grapheneJ. Appl. Phys.20081036064302
  27. H. S. Chu and C. H. GanActive plasmonic switching at mid-infrared wavelengths with graphene ribbon arraysAppl. Phys. Lett.2013102231107
  28. C. Casiraghi, A. Hartschuh, E. lidorikis, H. Qian, H. Harutyunyan, T. Gokus, K. S. Novoselov, and A. C. FerrariRayleigh imaging of graphene and graphene layersNano Lett.2007727112717

Other (28)

X. J. Leijtens, B. Kuhlow, and M. K. SmitH. VenghausWavelength Filters in Fibre OpticsSpringerNewYork, USA2006Arrayed waveguide gratings

T. NumaiSemiconductor wavelength tunable optical filtersJ. Nonlinear Opt. Phys.199324643659

T. Barwicz, M. A. Popovic, P. T. Rakich, M. R. Watts, H. A. Haus, E. P. Ippen, and H. I. SmithMicroring-resonatorbased add-drop filters in SiN: fabrication and analysisOpt. Express200412714371442

L. Dong, P. Hua, T. A. Birks, L. Reekie, and P. S. J. RussellNovel add/drop filters for wavelength-divisionmultiplexing optical fiber systems using a Bragg grating assisted mismatched couplerIEEE Photon. Technol. Lett.199681216561658

C. Riziotis and M. N. ZervasDesign considerations in optical add/drop multiplexers based on grating-assisted null couplersJ. Lightwave Technol.200119192104

J. P. WeberSpectral characteristics of coupled-waveguide Bragg-reflection tunable optical filterIEE Proc. Optoelectron.19931405275284

R. R. A. SymsImproved coupled-mode theory for codirectionally and contra-directionally coupled waveguide arraysJ. Opt. Soc. Am. A19918710621069

C. Bulmer and M. WilsonSingle mode grating coupling between thin-film and fiber optical waveguidesIEEE J. Quantum Electron.19781410741749

W. Shi, X. Wang, C. Lin, H. Yun, Y. Liu, T. Baehr-Jones, M. Hochberg, N. A. F. Jeager, and L. ChrostowskiSilicon photonic grating-assisted, contra-directional couplersOpt. Express201321336333650

T. ErdoganOptical add-drop multiplexer based on an asymmetric Bragg couplerOpt. Commun.19981571249264

H. SakataAnalysis of wavelength-selective photodetectors based on grating-assisted forward couplingJ. Lightwave Technol.1993114560566

E. Mao, D. R. Yankelevich, C. C. Lin, O. Solgaard, A. Knoesen, and J. S. HarrisNarrow-band light emission in semiconductor-fibre asymmetric waveguide couplerElectron. Lett.2000361613781379

A. Pospischil, M. Humer, M. M. Furchi, D. Bachmann, R. Guider, T. Fromherz, and T. MuellerCMOS-compatible graphene photodetector covering all optical communication bandsNat. Photon.2013711892896

X. Gan, R. J. Shiue, Y. Gao, I. Meric, T. F. Heinz, K. Shepard, J. Hone, S. Assefa, and D. EnglundChip-integrated ultrafast graphene photodetector with high responsivityNat. Photon.2013711883887

S. Schuler, D. Schall, D. Neumaier, L. Dobusch, O. Bethge, B. Schwarz, M. Krall, and T. MuellerControlled generation of ap-n junction in a waveguide integrated graphene photodetectorNano Lett.2016161171077112

R. J. Shiue, Y. Gao, Y. Wang, C. Peng, A. D. Robertson, D. K. Efetov, S. Assefa, F. H. L. Koppens, J. Hone, and D. EnglundHigh-responsivity graphene-boron nitride photodetector and autocorrelator in a silicon photonic integrated circuitNano Lett.2015151172887293

X. Yin, X. Ke, L. Chen, T. Zhang, J. Li, Z. Zhu, and X. LiUltra-broadband TE-pass polarizer using a cascade of multiple few-layer Graphene embedded silicon waveguidesJ. Lightwave Technol.2016341331813187

Z. H. Zhu, C. C. Guo, K. Liu, J. F. Zhang, W. M. Ye, X. D. Yuan, and S. Q. QinElectrically controlling the polarizing direction of a graphene polarizerJ. Appl. Phys.201411610104304

M. Kim, C. Y. Jung, H. Heo, and S. KimOptical reflection modulation using surface plasmon resonance in a grapheneembedded hybrid plasmonic waveguide at optical communication wavelengthOpt. Lett.201540871874

T. Q. Tran, S. Lee, and S. KimTunable wide-angle tunneling in graphene-assistied frustrated total internal reflectionSci. Rep.2016619975

A. Farmani, M. Miri, and M. H. SheikhiTunable resonant Goos-Hänchen and Imbert-Fedorov shifts in total reflection of terahertz beams from graphene plasmonic metasurfacesJ. Opt. Soc. Am. B201734610971106

M. Bruna and S. BoriniOptical constants of graphene layers in the visible rangeAppl. Phys. Lett.2009943031901

S. S. Orlov, A. Yariv, and S. V. EssenCoupled-mode analysis of fiber-optic add-drop filters for dense wavelengthdivision multiplexingOpt. Lett.19972210688690

S. Olivier, H. Benisty, C. Weisbuch, C. J. Smith, T. F. Krauss, and R. HoudréCoupled-mode theory and propagation losses in photonic crystal waveguidesOpt. Express2003111314901496

A. Farmani, M. Miri, and M. H. SheikhiAnalytical modeling of highly tunable giant lateral shift in total reflection of light beams from a graphene containing structureOpt. Commun.20173916876

G. W. HansonDyadic Green’s functions and guided surface waves for a surface conductivity model of grapheneJ. Appl. Phys.20081036064302

H. S. Chu and C. H. GanActive plasmonic switching at mid-infrared wavelengths with graphene ribbon arraysAppl. Phys. Lett.2013102231107

C. Casiraghi, A. Hartschuh, E. lidorikis, H. Qian, H. Harutyunyan, T. Gokus, K. S. Novoselov, and A. C. FerrariRayleigh imaging of graphene and graphene layersNano Lett.2007727112717

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