Optical subcarrier processing for Nyquist SCM signals via coherent spectrum overlapping in four-wave mixing with coherent multi-tone pump

GW Lu, RS Luís, JMD Mendinueta, T Sakamoto… - Optics …, 2018 - opg.optica.org
As one of the promising multiplexing and multicarrier modulation technologies, Nyquist
subcarrier multiplexing (Nyquist SCM) has recently attracted research attention to realize …

Distributed aggregation and reception of a 400-Gb/s net rate superchannel in a single-photodiode 110-GHz Kramers-Kronig receiver

I Sackey, C Schmidt-Langhorst, R Emmerich… - Optical Fiber …, 2018 - opg.optica.org
We use a distributed superchannel aggregation scheme to demonstrate ultra-wideband
single-photodiode reception based on inherently polarization-aligned Kramers-Kronig …

Wavelength conversion using fiber cross-phase modulation driven by two pump waves

S Watanabe, T Kato, T Tanimura… - Optics express, 2019 - opg.optica.org
Wavelength conversion using all-optical phase modulation in a fiber driven by two pump
waves is investigated. The operation features are analyzed using an all-optical phase …

THz-range optical frequency shifter for dual polarization WDM signals using frequency conversion in fiber

T Kato, S Watanabe, T Tanimura… - Journal of Lightwave …, 2017 - ieeexplore.ieee.org
We propose an optical frequency shifter for dual-polarization signals using frequency
conversion in fiber. The proposed optical frequency shifter is achieved by transmitting input …

Coherent reception and 126 GHz bandwidth digital signal processing of CO-OFDM superchannel generated by fiber frequency conversion

T Tanimura, T Kato, R Okabe, S Oda, T Richter… - OFC …, 2014 - ieeexplore.ieee.org
We implement 126-GHz bandwidth coherent receiver and demonstrate multi-channel
reception with nonlinear compensation (NLC) of a precisely frequency-allocated four …

Distributed 1-Tb/s all-optical aggregation capacity in 125-GHz optical bandwidth by frequency conversion in fiber

T Richter, C Schmidt-Langhorst… - 2015 European …, 2015 - ieeexplore.ieee.org
We demonstrate the spatially distributed aggregation of four 31.1-GBd PDM-32QAM sub-
carriers into a 1-Tb/s net data rate superchannel occupying only 125-GHz optical bandwidth …

Coherent in-line substitution of OFDM subcarriers using fiber-frequency conversion and free-running lasers

T Richter, C Schmidt-Langhorst, R Elschner… - Optical Fiber …, 2014 - opg.optica.org
Coherent In-line Substitution of OFDM Subcarriers Using Fiber-Frequency Conversion and
Free-Running Lasers Page 1 Th5B.6.pdf OFC Postdeadline 2014 © OSA 2014 Coherent In-line …

Distributed ultradense optical frequency-division multiplexing using fiber nonlinearity

R Elschner, T Richter, T Kato, S Watanabe… - Journal of Lightwave …, 2013 - opg.optica.org
We extend our investigations on a recently proposed concept for distributed coherent optical
orthogonal frequency-division multiplexing (CO-OFDM) by fiber-frequency conversion for …

Coherent subcarrier processing node based on optical frequency conversion and free-running lasers

T Richter, C Schmidt-Langhorst… - Journal of Lightwave …, 2014 - ieeexplore.ieee.org
We demonstrate the use of frequency conversion in optical fiber to implement a coherent
add/drop architecture. Its application is experimentally investigated in an optical frequency …

Distributed aggregation of spectrally efficient single-and dual-polarization super-channels by optical frequency conversion in fiber

R Elschner, T Richter… - Journal of Lightwave …, 2015 - ieeexplore.ieee.org
Recently developed upgrade options for distributed ultra-dense frequency-division
multiplexing toward large aggregation capacity are discussed. The concept, originally …