140 Carrier, 20GHz SCM Signal Transmission across 200km SMF by Two-step Sideband Suppression Scheme in Optical SSB Modulation

Fujiwara, Toshihito; Kikushima, Koji

doi:10.1109/ofc.2007.4348548

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…An SSR of 13 dB was achieved directly with a DD-MZM in [3]. Larger SSR values, up to 28 dB, have been reported but using additional and costly optical filters [12,13]. Fig.1 shows a spectrally efficient WDM/SSB transmitter without additional optical filters; where performance is limited due to the crosstalk associated with the imperfect suppression ratio.…”

Section: Introductionmentioning

confidence: 99%

Impact of Band Rejection in Multichannel Broadband Subcarrier Multiplexing

Gutiérrez

Perry

Smyth

et al. 2015

J. Opt. Commun. Netw.

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Abstract-This paper explores experimentally the impairments in performance that are generated when multiple single side band SCM signals are closely allocated in frequency to establish a spectrally efficient WDM link. The performance of cost effective single side band WDM/SCM implementations, without optical filters in the transmitter, presents a strong dependency on the imperfect sideband suppression ratio that can be directly achieved with the electro optical modulator. A direct detected broadband multichannel SCM link composed of a state of the art optical IQ modulator and five QPSK subcarriers per optical channel is presented, showing that a suppression ratio of 20 dB obtained directly with the modulator produced a penalty of 2 dB in overall performance, due to interference between adjacent optical channels.Index Terms-Optical IQ modulator, sideband suppression ratio (SSR), subcarrier multiplexing (SCM), wavelength division multiplexing (WDM).

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Section: Introductionmentioning

confidence: 99%

Impact of Band Rejection in Multichannel Broadband Subcarrier Multiplexing

Gutiérrez

Perry

Smyth

et al. 2015

J. Opt. Commun. Netw.

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“…In this paper we generate an OSSB signal by processing an ODSB modulated signal. However, the same processing could be applied to enhance the unwanted sideband suppression ratio of an OSSB signal generated my means of any other method [6,7,[15][16][17][18][19][20][21]. This would increment the complexity of the system, but would reduce the amount of SBS interaction required to achieve a significant sideband suppression ratio.…”

Section: Discussionmentioning

confidence: 99%

“…However, it has also been found that very high levels of suppression of the unwanted sideband are required in order to achieve sufficient optical phase-shift and amplitude measurement accuracy [4]. In the last years, a number of techniques have been developed for the generation of OSSB signals [15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Swept optical single sideband modulation for spectral measurement applications using stimulated Brillouin scattering

Sagues¹,

Loayssa²

2010

Opt. Express

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We propose a technique for the generation of broadband optical single sideband modulated signals. The technique is based on optically processing an optical double sideband signal using stimulated Brillouin scattering effect. An unwanted sideband suppression over 40 dB in a broadband range from 50 MHz to 20 GHz is experimentally demonstrated. In addition, we apply the generated optical single sideband signal for the spectral characterization of polarization dependent parameters of optical components. The experimental characterization of the polarization dependent loss and the differential group delay of a phase-shifted fiber Bragg grating is performed in order to demonstrate the feasibility of the technique.

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“…Firstly, SSB was originally developed as a method to overcome dispersive fading [32,38]. With that technique, SCM/SSB signals have been transmitted over hundreds of km with no penalty due to chromatic dispersion [39]. Secondly, several independent studies have concluded that the optimum subcarrier spacing for long transmission distance over SSMF is within the range of 2-10 Gbaud [40][41][42][43].…”

Section: Optical Linkmentioning

confidence: 99%

All-Analogue Real-Time Broadband Filter Bank Multicarrier Optical Communications System

Gutiérrez

Perry

Martin

et al. 2015

J. Lightwave Technol.

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Abstract-This paper studies the key aspects of an optical link which transmits a broadband microwave filter bank multicarrier (FBMC) signal. The work is presented in the context of creating an all-analogue real-time multi-gigabit orthogonal frequency division multiplexing (OFDM) electro-optical transceiver for short range and high capacity data center networks. Passive microwave filters are used to perform the pulse shaping of the bit streams, allowing an orthogonal transmission without the necessity of digital signal processing (DSP). Accordingly, a cyclic prefix that would cause a reduction in the net data rate is not required. An experiment consisting of three orthogonally spaced 2.7 Gbaud quadrature phase shift keyed (QPSK) subchannels demonstrates that the spectral efficiency of traditional DSP-less subcarrier multiplexed (SCM) links can be potentially doubled. A sensitivity of -29.5 dBm is achieved in a 1 kilometer link.

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140 Carrier, 20GHz SCM Signal Transmission across 200km SMF by Two-step Sideband Suppression Scheme in Optical SSB Modulation

Abstract: We propose a two-step sideband suppression scheme to realize enhanced optical SSB generation. 140 carrier, super wideband (8GHz to 20GHz) SCM transmission across 200km of SMF is demonstrated. The scheme achieves high sideband suppression ratios.

Cited by 5 publications

References 8 publications

Impact of Band Rejection in Multichannel Broadband Subcarrier Multiplexing

Impact of Band Rejection in Multichannel Broadband Subcarrier Multiplexing

Swept optical single sideband modulation for spectral measurement applications using stimulated Brillouin scattering

All-Analogue Real-Time Broadband Filter Bank Multicarrier Optical Communications System

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