Transmission and transparent wavelength conversion of an optically labeled signal using ASK/DPSK orthogonal modulation

Chi, Nan; Zhang, Jianfeng; Holm-Nielsen, P.V.; Peucheret, Christophe; Jeppesen, P.

doi:10.1109/lpt.2003.809922

Cited by 62 publications

(3 citation statements)

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“…For these requirements, to accommodate optical packet-based data traffic in WDM networks, the optical burst switching and the optical packet-switching (OPS) have been considered in the last several years. [4][5][6][7][8][9][10][11][12] The OPS has been investigated as a 0091-3286/2011/$25.00 C 2011 SPIE technique that enables the optical transport network (e.g., synchronous digital hierarchy and WDM) to accommodate the burst nature of IP traffic, and provides increased throughput and more efficient bandwidth utilization. 7 In addition, compared with electronic packet switching, the switching in an OPS system can be performed in all optical domain without any optoelectronic conversions.…”

Section: Introductionmentioning

confidence: 99%

“…7 In addition, compared with electronic packet switching, the switching in an OPS system can be performed in all optical domain without any optoelectronic conversions. 9,13 In an OPS system, the optical label carries the routing information for the payload. Optical label processing is a crucial technique for realization of OPS networks.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, some implementations of optical labels were proposed and some of them have also been demonstrated, such as wavelength division modulation (e.g., wavelength diversity label), 13 time division modulation (e.g., bit serial label), 14 frequency division modulation (e.g., sub-carrier label), 15 optical code division modulation [e.g., optical orthogonal code (OOC) label], [16][17][18][19] and orthogonal modulation (e.g., amplitude shift keying, frequency shift keying, and differential phase-shift keying.) 5,9 Among these techniques of optical label schemes, as an alternative scheme, optical codes-based optical label technique is attracted widely, owing to its advantages, such as no required clock extraction, low latency, and all-optical processing. However, considering thousands of addresses (namely optical labels) in OPS networks, the limited number of OOCs for optical labels with the given code length and weight is not practical for use of optical labels that one OOC assigns only one address.…”

Section: Introductionmentioning

confidence: 99%

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Performance analysis of multiple optical orthogonal codes sequences–based optical labels for optical packet switching networks

Zhang

Wang

et al. 2011

Opt. Eng

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Multiple optical orthogonal codes sequences (MOOCS)-based optical labels for optical packet switching (MOOCS-OPS) were proposed and studied in our previous works. In order to evaluate the performances of the MOOCS-OPS networks resulting from interference of the MOOCSbased optical labels, we utilize a new study method that applies the independent case of multiple optical orthogonal codes to derive the probability function of the MOOCS-OPS networks for the first time. Additionally, the optical label processing time, the utilization efficiency, and the packet loss rate in the MOOCS-OPS networks are also considered. We discuss the performance and efficiency characteristics with a variety of parameters, and compare some characteristics of the system employed by a single optical orthogonal code or MOOCS-based optical labels. The performances of the system are also calculated, and our results verify that the method and the networks are effective. Moreover, it is found that performances of the MOOCS-OPS networks would, negatively, be worsened, compared with the single optical orthogonal code-based optical label for optical packet switching; however, the MOOCS-OPS networks can greatly enlarge the scalability of the optical packet switching networks. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance analysis of multiple optical orthogonal codes sequences–based optical labels for optical packet switching networks

Zhang

Wang

et al. 2011

Opt. Eng

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A high‐speed single‐channel inter‐satellite optical wireless communication link incorporating spectrum‐efficient orthogonal modulation scheme

Singh

Malhotra

Dhasarathan

2020

Micro & Optical Tech Letters

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The present work reports a novel single-channel highspeed inter-satellite optical wireless communication (IsOWC) transmission link by using a 3-D spectrum-efficient orthogonal modulation scheme incorporating hybrid non-return-to-zero-differential quadrature phase shift keying-polarization shift keying schemes. Three independent 40 Gbps information signals are parallel transported by modulating over distinct optical signal properties viz. amplitude, phase, and polarization of a single wavelength laser. The performance of the proposed system has been investigated by evaluating bit error rate (BER) performance of the IsOWC link vs link distance as performance metrics. Also, the link performance is numerically investigated in the presence of pointing errors. We numerically demonstrate a faithful 120 Gbps transmission at 26 000 km IsOWC link length. Further, the results report a reliable transmission up to 3.5 urad pointing error angle with acceptable BER performance of the link.

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Novel transmitter of dark RZ signal based on external modulator

Shao

Chen

Wen

2007

Optoelectron. Lett.

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A novel transmitter to generate a dark RZ signal with tunable duty cycle and extinction ratio is proposed, by modifying the process of precoding, modulating and coding. A dark RZ signal is generated simply by using one dual-arm Mach-Zehnder LiNbO 3 modulator. We demonstrate experimentally that this optical dark RZ signal can be directly measured by a conventional binary intensity modulation direct detection (IM-DD) receiver. When different values of duty cycles at 2.5 Gbit/s are adjusted, the experimental results show different BER curves and eye diagrams of the optical dark RZ signal. CLC number: TN832 Document code: A Article ID: 1673-1905(2007)02-0109-03 DOIIt is well known that a few advanced optical modulation formats have been proposed recently [1][2][3][4][5][6] . In order to reduce complication of modulating or coding in the transmitter and decoding in the receiver, Jianjun Yu [7] demonstrated a simple method to generate the MD-RZ by using only one dual-arm Mach-Zehnder LiNbO 3 modulator (LN-MOD). Moreover, half-bit delayed dark RZ payload with orthogonal modulation DPSK label has been proposed [8] , where the dark-RZ pulse was generated by using a nonlinear optical loop mirror (NOLM). The dark RZ signal generated by this method can be used in orthogonal labeling optical networks. But using an NOLM to generate dark RZ pulse needs high power consumption. In this paper, we report a simple and novel dark RZ signal transmitter implementation, which only requires one dual-arm Mach-Zehnder LiNbO 3 modulator. The principle for dark RZ signal generation is similar to a modified duo-binary signal generation in Ref. [7]. Through analyzing the process of modulating and coding theoretically, we propose and experimentally demonstrate a novel method to generate a dark RZ signal with tunable duty cycle and extinction ratio. This dark RZ signal is easily generated only by using a dual-arm LiNbO 3 M-Z modulator. We demonstrate experimentally that this optical dark RZ signal can be directly measured by a conventional binary intensity modulation direct detection (IM-DD) receiver. The experimental results show the BER performances and eye diagrams of the optical dark RZ signal with different duty cycles at 2.5 Gbit/s.Precoding is unavoidable to generate a dark RZ signal in the optical transmitter, because it can avoid error propagation for transmission [9] .Assuming that the NRZ pulse has a waveform shape of q(t), the transmitted signal of the NRZ pulse can be written aswhere T is the bit time period, and d k is the binary data "1" or "0". Here k is the word-length of the pseudorandom sequence bits. The signal after precoding can be expressed as 1 ( ) ( ), 0,1 k k

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Transmission and transparent wavelength conversion of an optically labeled signal using ASK/DPSK orthogonal modulation

Cited by 62 publications

References 7 publications

Performance analysis of multiple optical orthogonal codes sequences–based optical labels for optical packet switching networks

Performance analysis of multiple optical orthogonal codes sequences–based optical labels for optical packet switching networks

A high‐speed single‐channel inter‐satellite optical wireless communication link incorporating spectrum‐efficient orthogonal modulation scheme

Novel transmitter of dark RZ signal based on external modulator

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