Highly sensitive optical sampling system using timing-jitter-reducedgain-switched optical pulse

Ohta, H.; Nogiwa, S.; Oda, Naoki; Chiba, Hidetoshi

doi:10.1049/el:19971470

Cited by 20 publications

(10 citation statements)

References 4 publications

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“…Early sampling systems used directly modulated, gain-switched laser diodes (distributed feedback lasers, DFB) in order to generate short pulses at a MHz-repetition rate [17][18][19][20][21]. These pulse sources, however, produced a rather large timing jitter, which could be reduced by an additional stabilization circuitry using optical holding beams.…”

Section: Sampling Pulse Sourcementioning

confidence: 99%

Optical sampling techniques

Schmidt‐Langhorst

Weber

2005

J Optic Comm Rep

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The optical sampling technique is a novel method to perform time-resolved measurements of optical data signals at high bit rates with a bandwidth that cannot be reached by conventional photodetectors and oscilloscopes. The chapter reviews the techniques that are used in optical sampling systems to perform the ultrafast sampling of the signal under investigation. In addition to the various nonlinear materials and effects used for the optical sampling gates and pulse sources, the realized optical sampling systems also differ in the way, in which the system is synchronized to the data signal. Systems have been reported using synchronous, random and software synchronized configurations. Applications of optical sampling systems include high bit rate waveform and eye diagram measurements, measurements of constellation diagrams of phase modulated data signals, time-resolved measurements of the state-of-polarization as well as investigations of fiber transmission impairments

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Section: Sampling Pulse Sourcementioning

confidence: 99%

Optical sampling techniques

Schmidt‐Langhorst

Weber

2005

J Optic Comm Rep

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“…Wavelength‐tunable, ultrashort‐pulse optical sources are used for optical time‐division multiplexing (OTDM), hybrid OTDM and wavelength‐division multiplexing, soliton transmission, all‐optical sampling systems, and so forth. [1–13]. In ultrahigh‐speed optical communication networks, the optical source used at a transmitter should be capable of generating high‐repetition‐rate ultrashort‐optical pulses with low timing jitter and frequency chirp [1], preferably at the changeable repetition rates and tunable wavelengths [2, 6, 7], respectively.…”

Section: Introductionmentioning

confidence: 99%

“…In ultrahigh‐speed optical communication networks, the optical source used at a transmitter should be capable of generating high‐repetition‐rate ultrashort‐optical pulses with low timing jitter and frequency chirp [1], preferably at the changeable repetition rates and tunable wavelengths [2, 6, 7], respectively. Meanwhile, low‐jitter optical short‐pulse sources can find application in all‐optical sampling systems that use an optical sampling pulse source for measuring the waveforms of ultrahigh‐speed optical data [11–13]. Besides, these telecommunications‐oriented applications, ultrashort‐optical pulses can also be used for optical sensing, metrology, ultrafast spectroscopy, and other scientific measurements.…”

Section: Introductionmentioning

confidence: 99%

Design of low‐timing‐jitter, stable picosecond optical‐pulse source using an uncooled gain‐switched Fabry–Perot semiconductor laser with external continuous‐wave light injection

Liu

Zhang

2011

Micro & Optical Tech Letters

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This paper presents the design of a low-timing-jitter, stable picosecond optical-pulse source, which is based on a low-cost, uncooled Fabry-Perot (FP) semiconductor laser in the gain-switching operation. The wavelength of the designed laser can be tuned from 1538 to 1554 nm under the condition of external continuous-wave (CW) light injection. The relationship between injection light power and timing jitter or between injection light power and pulse width of this gain-switched laser is studied experimentally. Our results show that the optical pulses with widths about 28 and 19 ps at the repetition frequencies of 2.5 and 5 GHz, respectively, are produced by an uncooled gain-switched FP semiconductor laser with timing jitter 600 fs, when the injection power and wavelength of an external CW light are appropriately chosen. The use of a 500-m dispersion-compensation fiber can easily compress the optical pulses from 26 to 7.7 ps. Moreover, the stability of an uncooled gain-switched FP laser is experimentally investigated, and a stable optical-pulse train at 5 GHz can be feasibly produced over 7 h of continuously working.ABSTRACT: A slot array placed on the face of a cavity realized in substrate-integrated waveguide technology is presented. Guidelines to design similar antennas are provided. The design has been done with the help of commercial software. The result is a low-cost, directive array antenna with a single feeding microstrip-line.

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“…The optical-nonlinearity-based sampling methods can broadly be classified as mentioned above as being based on χ 2 or on χ 3 . After some early work on single-shot alloptical sampling around 1970 [1] and on equivalent-time all-optical sampling in the 1980s [2], the utilization of χ 2 has been explored fairly extensively since the mid 1990s in various configurations including sum-frequency generation (SFG) [3][4][5][6][7][8][9][10][11]. The χ 3 -in-optical-fiber-based optical sampling schemes originate from the fact that the index of refraction in fibers is intensity dependent (nonlinear refraction) which can be utilized in different ways as explained later.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear optical fiber based high resolution all‐optical waveform sampling

Andrekson

Westlund

2007

Laser & Photonics Reviews

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When there is a need to accurately characterize optical waveforms and, it is not surprising that some of the best, albeit only recently established, techniques to do this rely on all-optical phenomena. Some basic reasons why all-optical sampling holds great promise as a very useful tool well into the foreseeable future are that there are no ringing phenomena with associated waveform distortion as in electronic sampling due to impedance mismatch, and that the time resolution can be made extremely high ( 1 ps) while yet also offering high sensitivity for e.g. eye diagram (a superposition of all '1' and '0' in a data sequence that is widely used in telecommunications testing) and statistical analysis. In this paper, we review recent developments in optical fiber-based sampling of optical waveforms. In particular, we describe the state-of-the-art in terms of the various performance measures as well as their trade-offs.Sampled data pattern of a 640 Gb/s. RZ data signals using a fiber FWM-based optical sampling system.

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Highly sensitive optical sampling system using timing-jitter-reducedgain-switched optical pulse

Cited by 20 publications

References 4 publications

Optical sampling techniques

Optical sampling techniques

Design of low‐timing‐jitter, stable picosecond optical‐pulse source using an uncooled gain‐switched Fabry–Perot semiconductor laser with external continuous‐wave light injection

Nonlinear optical fiber based high resolution all‐optical waveform sampling

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