Novel photonic downconversion technique with optical frequency shift
for millimeter-wave-band radio-on-fiber systems
- Title :
Novel photonic downconversion technique with optical frequency shift
for millimeter-wave-band radio-on-fiber systems
- Authors :
Toshiaki Kuri and Ken-ichi Kitayama
- Journal :
IEEE Photonics Technology Letters, vol. 14, No. 8,
pp. 1163-1165, August 2002.
- Abstract :
We newly propose a photonic downconversion technique with optical frequency
shift to detect millimeter-wave-band (mm-wave-band) radio-on-fiber (ROF) signals.
In the proposed technique, the carrier and first-order sideband components of
mm-wave-band ROF signal are differentially shifted closer to each other in the
optical domain on the receiver side.
The closely aligned optical components are filtered out and photodeteced to
generate a desired intermediate-frequency signal in the microwave band.
We describe the theoretical basis for our proposal and the experimental transmission
of a 60-GHz band 155-Mb/s differential phase-shift keying ROF signal over
a 25-km-long standard single-mode fiber.
- Key words : Fiber dispersion, laser phase noise, millimeter-wave, radio-on-fiber.
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