Frequency-Comb Regeneration for Self-Homodyne Superchannels
Journal article, 2016

We propose and demonstrate frequency-comb regeneration using injection locking and a parametric mixer. We theoretically evaluate the effect of the dispersive walk-off between the two unmodulated carriers from which the comb is regenerated. We calculate the maximum number of carriers which can be regenerated as a function of the laser linewidth and transmission distance when considering dispersion-unmanaged links. Experimentally, we demonstrate a 70 line comb generation without major linewidth degradation from two carriers with 15 dB optical signal-to-noise ratio (OSNR). The low OSNR operation is achieved by the use of optical injection locking. We also evaluate the degradation in the comb regeneration when the carriers are temporally decorrelated in order to emulate the effect of dispersive walk-off. When the temporal delay is 1.5 ns, the comb regeneration does not suffer from major degradation but when the delay is 10 ns, only 30 carriers can be regenerated without linewidth degradation, which agrees with our theoretical analysis.

Walk-off Engineering main heading: Optical frequency conversion

Optical injection locking

Transmission distances

optical fibre communication

Signal to noise ratio Frequency combs

optical frequency combs


homodyne detection


Optical signal to noise ratio

Laser line-width


Abel Lorences Riesgo

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Tobias Eriksson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Attila Fülöp

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Peter Andrekson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Journal of Lightwave Technology

0733-8724 (ISSN)

Vol. 34 8 1800-1806

Phase-sensitive optical parametric amplifiers (PSOPA)

European Commission (FP7), 2012-03-01 -- 2017-02-28.

Areas of Advance

Information and Communication Technology

Subject Categories

Communication Systems



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