Spectral encoding and decoding of 10 Gbit/s femtosecond pulses using high resolution arrayed-waveguide grating

Tsuda, Hitoshi; Takenouchi, Hirokazu; Ishii, T.; Okamoto, K.; Goh, Takashi; Satô, Kenji; Hirano, A.; Kurokawa, Takashi; Amano, C.

doi:10.1049/el:19990783

Cited by 84 publications

(28 citation statements)

References 5 publications

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“…The received data streams are split through a 1 × M splitter and finally decoded by the predefined code sequences. Optical CDMA as an alternative to other optical multiplexing schemes such as wave-length division multiplexing (WDM) and TDM, not only inherits the advantages of microwave CDMA such as efficient bandwidth usage, robust and secure communication over open channels, but also has many additional attractive features including higher granularity and scalability within optical networks, optical transparency to data format and rate, improved cross-talk performance and more flexible asynchronous access [3][4][5][6][7][8]. In addition, optical CDMA scheme avoids the optical-to-electrical and electrical-to-optical conversion processes and eliminates the bandwidth constrains set by conventional electronics technologies (<10 GHz).…”

Section: Open Accessmentioning

confidence: 99%

Polymeric Optical Code-Division Multiple-Access (CDMA) Encoder and Decoder Modules

Chen

2011

Polymers

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Abstract:We propose a low cost polymeric optical waveguides-based optical CDMA encoder and decoder modules. The structures of the optical CDMA encoder and decoder modules are presented. The performance of the optical CDMA encoder and decoder modules is simulated using 10-chip binary phase-shift keying (BPSK) coding schemes. The optical CDMA encoder and decoder modules can effectively transmit and recover optical CDMA data streams. The SNR of the received signal is analyzed and determined to be primarily from the cross correlation with other channels.

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Section: Open Accessmentioning

confidence: 99%

Polymeric Optical Code-Division Multiple-Access (CDMA) Encoder and Decoder Modules

Chen

2011

Polymers

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“…More recently, planar lightwave circuits (PLCs) have been used to overcome the limiting practical issues discussed above by monolithically integrating the required tunable taps, phase-shifters, and combiners onto a single substrate [3]. Another PLC technology, the arrayed waveguide grating (AWG), has also been investigated for OCDMA applications [4]. While this is indeed a more practical approach, PLCs are difficult and expensive to fabricate and are therefore a far from ideal technical solution.…”

Section: Fig 2 Schematic Examples Of Temporal Codes (Upper Traces) mentioning

confidence: 99%

A comparative study of the performance of seven- and 63-chip optical code-division multiple-access encoders and decoders based on superstructured fiber Bragg gratings

Teh

Petropoulos

Ibsen

et al. 2001

J. Lightwave Technol.

161

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Abstract-We report a range of elementary optical coding and decoding experiments employing superstructured fiber Bragg grating (SSFBG) components. First, we perform a comparative study of the relative merits of bipolar and unipolar coding : decoding schemes and show that the SSFBG approach allows high-quality unipolar and bipolar coding. A performance close to that theoretically predicted for seven-chip, 160-Gchip/s -sequence codes is obtained. Second, we report the fabrication and performance of 63-chip, 160-Gchip/s, bipolar Gold sequence grating pairs. These codes are at least eight times longer than those generated by any other scheme based on fiber grating technology so far reported. Last, we describe a range of transmission system experiments for both the seven-and 63-bit bipolar grating pairs. Error-free performance is obtained over transmission distances of 25 km of standard fiber. In addition, we have demonstrated error-free performance under multiuser operation (two simultaneous users). Our results highlight the precision and flexibility of our particular grating writing process and show that SSFBG technology represents a promising technology not just for optical code division multiple access (OCDMA) but also for an extended range of other pulse-shaping optical processing applications.Index Terms-All-optical process, code division multiple access (CDMA), communication systems, fiber Bragg gratings (FBGs), multiple-access communications, optical networks, optical signal processing.

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“…An AWG-based device has been used for encoding/decoding of a single 10-Gb/s data stream; however, the crucial interference rejection function was not demonstrated [18]. Fiber grating encoders have been used to demonstrate two simultaneous frequency-overlapped 1.25-Gb/s users using fast electronics for waveform discrimination [26].…”

Section: Introductionmentioning

confidence: 99%

Four-user, 2.5-Gb/s, spectrally coded OCDMA system demonstration using low-power nonlinear processing

Jiang

Seo

Yang

et al. 2005

J. Lightwave Technol.

106

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Abstract-This paper describes the demonstration of 2.5-Gb/s four-user optical-code-division-multiple-access (OCDMA) system operating at bit-error rate 10 11 utilizing programmable spectral phase encoding, an ultrasensitive ( 200 fJ/b) periodically poled lithium-niobate-waveguide nonlinear waveform discriminator and 10G Ethernet receiver. A comprehensive description of this ultra-short-pulse spectral phase-coded OCDMA system is presented. On the subsystem level, two key component technologies, namely, femtosecond encoding/decoding and low-power high-contrast nonlinear discrimination, have been developed and characterized. At the system level, data for the four-user OCDMA system operating at 2.5 Gb/s for binary as well as multilevel code families are described.Index Terms-Multiaccess interference (MAI), nonlinear optics, optical code-division multiple access (OCDMA), optical signal processing, pulse shaping.

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Spectral encoding and decoding of 10 Gbit/s femtosecond pulses using high resolution arrayed-waveguide grating

Cited by 84 publications

References 5 publications

Polymeric Optical Code-Division Multiple-Access (CDMA) Encoder and Decoder Modules

Polymeric Optical Code-Division Multiple-Access (CDMA) Encoder and Decoder Modules

A comparative study of the performance of seven- and 63-chip optical code-division multiple-access encoders and decoders based on superstructured fiber Bragg gratings

Four-user, 2.5-Gb/s, spectrally coded OCDMA system demonstration using low-power nonlinear processing

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