Laser-phase-fluctuation-insensitive offset-frequency-spaced two-tone optical coherent detection scheme with digital-signal-processing technique for radio-over-fiber …
T Kuri, T Sakamoto, T Kawanishi - Broadband Access …, 2015 - spiedigitallibrary.org
We have proposed a laser-phase-fluctuation-insensitive optical coherent detection scheme
assisted by a digital signal processing (DSP) technique for radio-over-fiber (RoF) systems. In
this system, a “two-tone” local light is used for an individual optical coherent detection of
both the carrier and the modulated components of RoF signal, where a frequency separation
of two-tone local light is the same as that of RoF signal. To distinguish the carrier and the
modulated components in the process of optical coherent detection, they have to be …
assisted by a digital signal processing (DSP) technique for radio-over-fiber (RoF) systems. In
this system, a “two-tone” local light is used for an individual optical coherent detection of
both the carrier and the modulated components of RoF signal, where a frequency separation
of two-tone local light is the same as that of RoF signal. To distinguish the carrier and the
modulated components in the process of optical coherent detection, they have to be …
Laser-phase-fluctuation-insensitive offset-frequency-spaced two-tone optical coherent detection scheme and its transmission for radio-over-fiber systems
T Kuri, T Sakamoto, T Kawanishi - Optics Express, 2015 - opg.optica.org
We propose a new optical coherent detection scheme with a “two-tone” local light, which is
also in principle insensitive to the laser phase fluctuation and is assisted by the digital signal
processing technique for radio-over-fiber (RoF) systems. The main feature of our proposal is
that the frequency separation of the two-tone local light is different from that of the RoF
signal, which is called “offset-frequency-spaced” in this paper. First, we explain the principle
of our new proposal and experimentally demonstrate the data recovery. Then, the influence …
also in principle insensitive to the laser phase fluctuation and is assisted by the digital signal
processing technique for radio-over-fiber (RoF) systems. The main feature of our proposal is
that the frequency separation of the two-tone local light is different from that of the RoF
signal, which is called “offset-frequency-spaced” in this paper. First, we explain the principle
of our new proposal and experimentally demonstrate the data recovery. Then, the influence …
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