Title :
Multi-channel crosstalk in a 25-GHz spaced DWDM millimeter-wave-band radio-over-fiber system
Author :
Yamaguchi, Takashi ; Takahashi, Yoshitomo ; Toda, Hiroyuki ; Kuri, Toshiaki ; Kitayama, Ken-ichi
Author_Institution :
Grad. Sch. of Eng., Doshisha Univ., Kyotanabe
fDate :
Sept. 9 2008-Oct. 3 2008
Abstract :
In this paper, we experimentally investigate the influence of multi-channel optical crosstalk in a 25-GHz spaced dense-wavelength division multiplexing (DWDM) millimeter-wave-band radio-over-fiber (RoF) downlink system. The eleven-channel crosstalk filtered with arrayed waveguide gratings (AWGs) was intentionally mixed with the desired channel of the RoF signal. We defined the suppression ratio of the crosstalk as the ratio of the mm-wave power of the desired channel and undesired channels which are estimated from optical spectrum of the detected RoF signal. The experimental results show that the power penalty due to the crosstalk of less than 1 dB is obtained when the suppression ratio is more than 25 dB.
Keywords :
arrayed waveguide gratings; crosstalk; radio-over-fibre; wavelength division multiplexing; dense-wavelength division multiplexing; frequency 25 GHz; millimeter-wave-band radio-over-fiber downlink system; multi-channel crosstalk; optical spectrum; spaced DWDM millimeter-wave-band radio-over-fiber system; Arrayed waveguide gratings; Downlink; High speed optical techniques; Optical attenuators; Optical crosstalk; Optical filters; Optical modulation; Optical waveguides; Signal generators; Wavelength division multiplexing;
Conference_Titel :
Microwave photonics, 2008. jointly held with the 2008 asia-pacific microwave photonics conference. mwp/apmp 2008. international topical meeting on
Conference_Location :
Gold Coast, Qld
Print_ISBN :
978-1-4244-2168-8
Electronic_ISBN :
978-1-4244-2169-5
DOI :
10.1109/MWP.2008.4666667
