Simultaneous penalty free dual wavelength conversion using four wave mixing in a Semiconductor Optical Amplifier

Raz, O.; Gallep, Cristiano M.; Dorren, H.J.S.

doi:10.1109/leos.2009.5343186

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…However if we use similar bit rate signals (10+10Gb/s) with ASK modulation, the relative input powers of the close and far channels can be re-aligned to improve OSNR and lower the BER penalty of the 2 nd converted channel. With no need for strict timing control of local CW source, an optional asynchronous operation as well as being modulation format agnostic [3] we believe this scheme for AOWC will find many suitable applications in all optical packet routers.…”

Section: Discussionmentioning

confidence: 99%

“…Obviously such a solution will not support conversion of more than one channel simultaneously. Recently we demonstrate how by employing a single strong probe and a single SOA, penalty free conversion based on four-wave mixing (FWM) can be achieved for simultaneous two data channels employing different modulation techniques (PSK and ASK) with no noticeable performance variation between them [3], as well as for higher data rates up to 40+10Gb/s (ASK) with some penalty [4]. These demonstrations, however, relied on the accurate alignment of polarization of probe and pumps since the FWM process requires pump and probe signals to have the same polarization inside the active optical cavity.…”

Section: Introductionmentioning

confidence: 99%

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Polarization Independent Dual Wavelength Converter Based on FWM in a Single Semiconductor Optical Amplifier

Gallep

Raz

Dorren

2010

Optical Fiber Communication Conference

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Abstract:We present a FWM-based dual channel wavelength converter in an SOA with very small variations in conversion efficiency and a minor polarization related power penalty of 0.9dB between best and worst case of polarization states. ©2009 Optical Society of America IntroductionAll optical wavelength converters (AOWCs) are likely to become key building blocks in future dynamic highcapacity optical networks [1]. Due to their integration potential and power efficiency, semiconductor optical amplifiers (SOAs) have attracted considerable interest as wavelength converters. Error-free wavelength conversion based on cross-gain and cross-phase modulation (XGM, XPM) in a single SOA has been demonstrated at up to 320 Gbps [2]. However, the use of XGM and XPM schemes imply that the same SOA cannot be used to convert signals of different modulation formats or speeds, as required additional manipulation of the signal are needed. Obviously such a solution will not support conversion of more than one channel simultaneously. Recently we demonstrate how by employing a single strong probe and a single SOA, penalty free conversion based on four-wave mixing (FWM) can be achieved for simultaneous two data channels employing different modulation techniques (PSK and ASK) with no noticeable performance variation between them [3], as well as for higher data rates up to 40+10Gb/s (ASK) with some penalty [4]. These demonstrations, however, relied on the accurate alignment of polarization of probe and pumps since the FWM process requires pump and probe signals to have the same polarization inside the active optical cavity.Some schemes proposed in the last decade, aimed to overcome the intrinsic polarization dependence of FWM parametric conversion method [5][6][7][8]. In most of these demonstrations only CW channels [5][6][7] were used. The use of dual orthogonal probes together with an input channel (pump) located at a longer wavelengths to produce a nondegenerated FWM as the converted product, was suggest in [5] but with very low efficiency of -30dB. A modified approach, using the input carrier as well as an output channel located between the two CW probes was also presented [6]. Another CW demonstration used a bi-directional propagation approach in a single-SOA inside a loop enclosing a polarization beam splitter (PBS), but again very low FWM efficiency was obtained [7]. The first experiments showing polarization insensitive FWM, including data over the channels, were shown by Lacey et al.[8], using two SOAs, each one performing FWM in a single optical polarization process, enabling 4 x 2.5Gbps conversion. Some OTDM demultiplexing schemes based on FWM in SOA also employed related techniques to minimize the polarization dependence, such as depolarization between pump and probes [9], co-polarized dualpump (CW+clock) [10] and the already mentioned bi-directional approach, with the signal carrier laying in between the orthogonal CW probes [11].In this paper we report on an optical polarization insensitive AOWC using two orthogonal CW prob...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polarization Independent Dual Wavelength Converter Based on FWM in a Single Semiconductor Optical Amplifier

Gallep

Raz

Dorren

2010

Optical Fiber Communication Conference

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“…Multiple conversions using a single strong continuouswave (CW) pump and multiple modulated carriers was suggested but only demonstrated for a single modulation format, at low bit rates and with considerable penalty [10]. Recently, we reported on initial results of penalty free simultaneous conversion of two 10-Gb/s data signals, one modulated in phase and the other in amplitude [11].…”

Section: Introductionmentioning

confidence: 99%

Four-Wave-Mixing-Based Dual-Wavelength Conversion in a Semiconductor Optical Amplifier

Gallep

Dorren

Raz

2010

IEEE Photon. Technol. Lett.

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Abstract-The simultaneous wavelength conversion of two different formats or bit-rate optical signals, with low input power, is demonstrated in a highly nonlinear semiconductor optical amplifier with a single strong continuous-wave pump. For two amplitude-modulated signals of different bit rates, moderate penalties are obtained, and for the case of mixed amplitude and phase modulation at 10 Gb/s, practically penalty-free operation is achieved. In all cases, small difference ( 1.1 dB) between single-and dualchannel operation is obtained, allowing asynchronous operation.

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Simultaneous penalty free dual wavelength conversion using four wave mixing in a Semiconductor Optical Amplifier

Abstract: Abstract-We demonstrate simultaneous wavelength conversion of two 10Gb/s signals of different modulation format (PSK&ASK) using a single common pump and a highly non-linear Semiconductor Optical Amplifier (SOA). The converted signals had no measurable power penalty.

Cited by 2 publications

References 7 publications

Polarization Independent Dual Wavelength Converter Based on FWM in a Single Semiconductor Optical Amplifier

Polarization Independent Dual Wavelength Converter Based on FWM in a Single Semiconductor Optical Amplifier

Four-Wave-Mixing-Based Dual-Wavelength Conversion in a Semiconductor Optical Amplifier

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