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InGaAsP Y-branch grating demultiplexer

InGaAsP Y-branch grating demultiplexer

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© The Institution of Electrical Engineers
Published

We report on the fabrication of a passive Y-branch wavelength-division demultiplexer with InGaAsP/InP rib waveguides. The wavelength-selective elements are Bragg reflection gratings on top of the two output ribs of the branch. A channel spacing of 13.5 nm in the 1.5μm region and a crosstalk attenuation of more than 18 dB for TE-polarised light were achieved.

Inspec keywords: gallium arsenide; frequency division multiplexing; optical waveguide components; indium compounds; optical communication equipment; III-V semiconductors

Other keywords: 1.5 micron; wavelength-selective elements; Bragg reflection gratings; WDM; channel spacing; 13.5 nm; two output ribs; fabrication; InGaAsP-InP; TE-polarised light; optical filters; Y-branch grating demultiplexer; crosstalk attenuation; passive Y-branch wavelength-division demultiplexer

Subjects: Optical waveguides; Optical communication; Optical coatings and filters

References

    1. 1)
      • A. Yariv . Coupled-wave theory for guided wave optics. IEEE J. Quantum Electron. , 919 - 933
    2. 2)
      • G. Winzer . Wavelength multiplexing components—a review of single-mode devices and their applications. IEEE J. Lightwave Technol. , 369 - 378
    3. 3)
      • R.V. Schmidt , D.C. Flanders , C.V. Shank , R.D. Stanley . Narrow-band grating filters for thin-film optical waveguides. Appl. Phys. Lett. , 651 - 652
    4. 4)
      • R.C. Alferness , C.H. Joyner , M.D. Divino , L.L. Buhl . InGaAsP/InP waveguide grating filters for λ = 1.5 μm. Appl. Phys. Lett. , 1278 - 1280
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