Format Conversion of Optical Multilevel Signals Using FWM-Based Optical Phase Erasure

Lu, Guo-Wei; Tipsuwannakul, Ekawit; Miyazaki, Tetsuya; Lundström, Carl; Karlsson, Magnus; Andrekson, Peter A.

doi:10.1109/jlt.2011.2160977

Cited by 47 publications

(26 citation statements)

References 18 publications

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“…Lu et al [45,46] propose and demonstrate format conversion among optical M-PSK signals, using this technique. They have experimentally demonstrated conversion of DQPSK to DPSK data at 10 and 160 Gbaud, and conversion of RZ-8DPSK to RZ-DQPSK data at 40 Gbaud.…”

Section: Passive Device Techniques Hnlfmentioning

confidence: 99%

Advanced optical modulation and format conversion

2014

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Section: Passive Device Techniques Hnlfmentioning

confidence: 99%

Advanced optical modulation and format conversion

2014

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“…In our approach, we propose to generate the second and third phase harmonics in a FWM process where the M-PSK signal and a continuous wave (CW) beam are used as the pump and the FWM-seed signal, respectively. The generated second phase harmonic, which corresponds to an optically format down-converted M/2-PSK signal [7], is subsequently partially regenerated before being coherently recombined with the third phase harmonic signal in another FWM process, where the M/2-PSK signal is used as the pump, to obtain back the now fully phaseregenerated original M-PSK signal. A key point of the scheme is that regeneration of an M/2-PSK rather than an M-PSK signal is required.…”

Section: Introductionmentioning

confidence: 99%

Phase regeneration of an M-PSK signal using partial regeneration of its M/2-PSK second phase harmonic

Jones

Parmigiani

Petropoulos

et al. 2015

Optics Communications

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Abstract:We propose and numerically investigate a phase regeneration technique that allows an M-PSK signal to be phase regenerated by an M/2-PSK (or even M/4-PSK) phase regenerator (applicable for M = 2 k , with k an integer). This scheme comprises three main parts; firstly, phase harmonic generation is used to create the second and third phase harmonics, secondly, the second phase harmonic (a down-converted M/2-PSK signal) is partially phase-regenerated, and thirdly and finally, the partially regenerated second phase harmonic and the third phase harmonic are mixed together to re-synthesise a phase regenerated replica of the original signal.

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“…An important component in such a transparent network is the optical modulation format converter. Format conversion can be performed using a number of techniques mainly exploiting nonlinear effects 1,2 . However, the linear approach of passively multiplexing single-carrier signals relying on a conventional delay line interferometer (DLI) to coherently superpose information-carrying symbols in time [3][4][5] , provides a simpler solution.…”

Section: Introductionmentioning

confidence: 99%