RZ-DPSK Transmission Using a 42.7-Gb/s Integrated Balanced Optical Front End With Record Sensitivity

Sinsky, J.H.; Adamiecki, A.; Gnauck, A.H.; Burrus, C.A.; Leuthold, Juerg; Wohlgemuth, O.; Chandrasekhar, S.; Umbach, A.

doi:10.1109/jlt.2003.822212

Cited by 43 publications

(16 citation statements)

References 10 publications

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“…61, the best PSK demonstration reported uncoded sensitivity about 2.5 dB from theory at 4 Mbps [157]. In the Gbit/s regime the best PSK performance degraded to ∼6 dB from theory at ∼6 Gbps and ∼9 dB from theory at ∼8 Gbps [158], providing little benefit over optically preamplified DPSK, which is a WDM-scalable approach with numerous demonstrations of comparable or better performance in terms of sensitivity and data rate [24,25,41,[128][129][130]133,159]. The nearly 4× sensitivity benefit PSK has over OOK is in part due to binary PSK being an antipodal format, in which a "0" is represented by signal field of -1 (π phase) and a "1" is represented by a 1 (phase of 0), so that 2-PSK has twice the signal-distance of OOK.…”

Section: Phase-shift-keying (Psk)mentioning

confidence: 99%

“…However in practice, at high rates above a Gbit/s (see Fig. 61), reported coherent-PSK [158,[164][165][166] suffers ∼5 dB greater implementation penalties than preamplified RXs [13,15,[128][129][130]133,135,159], eliminating much of the theoretical benefit. While improved PSK designs may achieve the anticipated sensitivities, based on existing demonstrations, preamplified RX designs have exhibited superior sensitivity and datarate, as well as WDM scalability [135,138,139,149,167].…”

Section: -Ary Orthogonal Modulationmentioning

confidence: 99%

“…Pulse carving using a MZM is a subject that has been discussed extensively in the literature [10,13,14,25,41,132,138,140,141,159,[333][334][335][336] as a means of generating high-fidelity waveforms that are well suited for long-haul high-rate fiber and free-space optical links. Sinusoidal-drive techniques have also been used for ultra-high-speed serial-parallel conversion in optical time-division multiplexed (OTDM) systems [337] and photonic analog-to-digital converters [338].…”

Section: Pulsed Waveform Generationmentioning

confidence: 99%

“…This can be implemented by directly subtracting the photocurrent output from discrete [128] or integrated balanced photodetectors [25,408,437], or using subsequent differential electronics to generate the difference signal [25,130,159], all of which are commercially available with bandwidths exceeding 40 GHz. Balanced detection provides an implementation benefit over single detector RXs since the resulting photocurrent deviation between "0" and "1" symbols is twice that of single-detector receivers, making it easier to directly overcome the noise threshold in the subsequent decision circuitry without additional RF amplifiers.…”

Section: Differential Phase Shift Keying (Dpsk)mentioning

confidence: 99%

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Laser communication transmitter and receiver design

Caplan

2007

J Optic Comm Rep

118

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Free-space laser communication systems have the potential to provide flexible, high-speed connectivity suitable for long-haul intersatellite and deep-space links. For these applications, power-efficient transmitter and receiver designs are essential for cost-effective implementation. State-of-the-art designs can leverage many of the recent advances in optical communication technologies that have led to global wideband fiber-optic networks with multiple Tbit/s capacities. While spectral efficiency has long been a key design parameter in the telecommunications industry, the many THz of excess channel bandwidth in the optical regime can be used to improve receiver sensitivities where photon efficiency is a design driver. Furthermore, the combination of excess bandwidth and average-power-limited optical transmitters has led to a new paradigm in transmitter and receiver design that can extend optimized performance of a single receiver to accommodate multiple data rates. This paper discusses state-of-the-art optical transmitter and receiver designs that are particularly well suited for average-power-limited photon-starved links where channel bandwidth is readily available. For comparison, relatively simple direct-detection systems used in short terrestrial or fiber optic links are discussed, but emphasis is placed on mature high-performance photon-efficient systems and commercially available technologies suitable for operation in space. The fundamental characteristics of optical sources, modulators, amplifiers, detectors, and associated noise sources are reviewed along with some of the unique properties that distinguish laser communication systems and components from their RF counterparts. Also addressed is the interplay between modulation format, transmitter waveform, and receiver design, as well as practical tradeoffs and implementation considerations that arise from using various technologies.

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Section: Phase-shift-keying (Psk)mentioning

confidence: 99%

Section: -Ary Orthogonal Modulationmentioning

confidence: 99%

Section: Pulsed Waveform Generationmentioning

confidence: 99%

Section: Differential Phase Shift Keying (Dpsk)mentioning

confidence: 99%

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Laser communication transmitter and receiver design

Caplan

2007

J Optic Comm Rep

118

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“…Entre las principales razones destaca su mayor robustez frente a los efectos no-lineales en transmisión [SIN04].…”

Section: Filtro Fotónico De Microondas Incoherente Con Coeficientes Cunclassified

Sistema de fabricación de altas prestaciones de redes de difracción de bragg en fibra y aplicaciones al campo de los sensores ópticos y a los sistemas de comunicaciones ópticas.

Olcina¹

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Advanced Lightwave Systems

Agrawal¹

2010

Fiber‐Optic Communication Systems

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Lightwave systems discussed so far are based on a simple digital modulation scheme in which an electrical binary bit stream modulates the intensity of an optical carrier inside an optical transmitter (on-off keying or OOK). The resulting optical signal, after its transmission through the fiber link, falls directly on an optical receiver that converts it to the original digital signal in the electrical domain. Such a scheme is referred to as intensity modulation with direct detection (IM/DD). Many alternative schemes, well known in the context of radio and microwave communication systems [l]-[3], transmit information by modulating both the amplitude and the phase of a carrier wave. Although the use of such modulation formats for optical systems was considered in the 1980s [4]-[9], it was only after the year 2000 that phase modulation of optical carriers attracted renewed attention, motivated mainly by its potential for improving the spectral efficiency of WDM systems [10]- [16]. Depending on the receiver design, such systems can be classified into two categories. In coherent lightwave systems [14], transmitted signal is detected using homodyne or heterodyne detection requiring a local oscillator. In the so-called self-coherent systems [16], the received signal is first processed optically to transfer phase information into intensity modulations and then sent to a direct-detection receiver.The motivation behind using phase encoding is two-fold. First, the sensitivity of optical receivers can be improved with a suitable design compared with that of direct detection. Second, phase-based modulation techniques allow a more efficient use of fiber bandwidth by increasing the spectral efficiency of WDM systems. This chapter pays attention to both aspects. Section 10.1 introduces new modulation formats and the transmitter and receiver designs used to implement them. Section 10.2 focuses on demodulation techniques employed at the receiver end. The bit-error rate (BER) is considered in Section 10.3 for various modulation formats and demodulation schemes. Section 10.4 focuses on the degradation of receiver sensitivity through mechanisms such as phase noise, intensity noise, polarization mismatch, and fiber dispersion. Nonlinear phase noise is discussed in Section 10.5 together with the techniques used for its compensation. Section 10.6 reviews the recent progress realized with emphasis on improvements in the spectral efficiency. The topic of ultimate channel capacity is the focus of Section 10.7.

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RZ-DPSK Transmission Using a 42.7-Gb/s Integrated Balanced Optical Front End With Record Sensitivity

Cited by 43 publications

References 10 publications

Laser communication transmitter and receiver design

Laser communication transmitter and receiver design

Sistema de fabricación de altas prestaciones de redes de difracción de bragg en fibra y aplicaciones al campo de los sensores ópticos y a los sistemas de comunicaciones ópticas.

Advanced Lightwave Systems

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