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Updated: Jul 6, 2026
Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
Fabrication of a multichannel wavelength-division multiplexing-passive optical net demultiplexer with
E Pawlowski1, M Ferstl, H Hellmich
1Heinrich-Hertz-Institut fürNachrichtentechnik Berlin GmbH, Einsteinufer 37, 10587 Berlin, Germany. pawlowski@hhi.de
Abstract:
A novel, to our knowledge, integrated wavelength-division multiplexing-passive optical net demultiplexer that uses an arrayed-waveguide grating and diffractive optical elements is presented. The demultiplexer is used to distribute 1.3-microm wavelength signals and to multiplex an eight-channel wavelength-division multiplexer spectrum at a 1.55-microm wavelength. The device shows high functionality and good optical performance. The measured cross talk was less than -21 dB, and the 3-dB bandwidth was determined to be 97 GHz, which is close to the theoretical value of 93 GHz. Average losses of 4.5 and 8 dB were measured for the 1.3- and the 1.55-microm signals, respectively.
