Passband flattening and broadening techniques for high spectral efficiency wavelength demultiplexers

Passband flattening and broadening techniques for high spectral efficiency wavelength demultiplexers

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Cancellation of the wavelength dependent image shift in demultiplexers, resulting in significant bandwidth increase, is described. Additional passband flattening using a Fabry-Perot filter is proposed. Spectral efficiencies greater than 90% can be achieved with a very low crosstalk.


    1. 1)
      • M.R. Amersfoort , C.R. de Boer , F.P.G.M. van Ham , M.K. Smit , P. Demeester , J.J.G.M. van der Tol , A. Kuntze . Phased-array wavelength demultiplexer with a flattened wavelength response. Electron. Lett. , 4 , 300 - 301
    2. 2)
      • C. Dragone . Waveguide grating router with maximally flat passbandproduced by spatial filtering. Electron. Lett. , 15 , 1312 - 1314
    3. 3)
      • A. Rigny , A. Bruno , H. Sik . Multigrating method for flattened spectralresponse wavelength multi/demultiplexers. Electron. Lett. , 20 , 1701 - 1702
    4. 4)
      • Thompson, G.H.B.: `An original low-loss and pass-band flattened SiO', Proc. OFC'98, Tech. Dig., 1998, San Jose, p. 77.
    5. 5)
      • D. Faklis , G.M. Morris . Spectral properties of multiorder diffractivelenses. Appl. Opt. , 14 , 2462 - 2468
    6. 6)
      • Miyamoto, Y.: `1.04 Tbit/s DWDM transmission experiment based onalternate polarisation 80 Gbit/s OTDM signals', Proc. ECOC'98, 1998, 3, p. 55–57.

Related content

This is a required field
Please enter a valid email address