High-fidelity, broadband stimulated-Brillouin-scattering-based slow light using fast noise modulation

Zhu, Yunhui; Lee, Myungjun; Neifeld, Mark A.; Gauthier, Daniel J.

doi:10.1364/oe.19.000687

Cited by 16 publications

(16 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The noise contribution from amplitude jitter (σ 2 aj ), which is due to the pattern dependence of the SBS slow-light effect, has a steeper slope than the other noise sources and becomes the dominant noise source for P p > 350 mW. In light of the fact that the slow-light delay increases linearly with P p , our results show that it is essential to minimize the pattern dependence in high-delay systems, which is enabled using a flattop gain profile, for example [20,26].…”

Section: System Noise Analysismentioning

confidence: 78%

“…It is also possible to simultaneously tailor the shape of the broadened resonance to minimize pulse distortion [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. It has been shown that a flattop SBS gain profile minimizes distortion and increases the slow-light delay [19][20][21]26]. In our experiments described below, we generate a nearly ideal flattop SBS gain profile with a spectral width (full-width at half-maximum) ΔΩ G =2π ¼ 5 GHz by broadening the spectrum of the pump laser (see Fig.…”

Section: A Stimulated Brillouin Scatteringmentioning

confidence: 99%

“…In our experiments described below, we generate a nearly ideal flattop SBS gain profile with a spectral width (full-width at half-maximum) ΔΩ G =2π ¼ 5 GHz by broadening the spectrum of the pump laser (see Fig. 1) using a tailored noisy injection current described in detail in [26].…”

Section: A Stimulated Brillouin Scatteringmentioning

confidence: 99%

“…As a result, achieving slow-light in a wide variety of material systems using different physical mechanisms have been under intensive study, including the popular realization of slow-light using stimulated Brillouin scattering (SBS) [8][9][10], which is the focus of this paper. Substantial progress has been made toward improving the maximum achievable fractional delay (i.e., equivalent to the delay-bandwidth product) of SBS slow-light while simultaneously minimizing signal distortion by tailoring the resonance profile [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26]. Nonetheless, due to the inevitable higher-order material dispersion and spectral filtering effects, the pulse shape always suffers at least some distortion that limits the slow-light device performance for many applications.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

et al. 2011

Self Cite

View full text Add to dashboard Cite

We use an information-theoretic method developed by Neifeld and Lee [J. Opt. Soc. Am. A 25, C31 (2008)] to analyze the performance of a slow-light system. Slow-light is realized in this system via stimulated Brillouin scattering in a 2 km-long, room-temperature, highly nonlinear fiber pumped by a laser whose spectrum is tailored and broadened to 5 GHz. We compute the information throughput (IT), which quantifies the fraction of information transferred from the source to the receiver and the information delay (ID), which quantifies the delay of a data stream at which the information transfer is largest, for a range of experimental parameters. We also measure the eye-opening (EO) and signal-to-noise ratio (SNR) of the transmitted data stream and find that they scale in a similar fashion to the information-theoretic method. Our experimental findings are compared to a model of the slow-light system that accounts for all pertinent noise sources in the system as well as data-pulse distortion due to the filtering effect of the SBS process. The agreement between our observations and the predictions of our model is very good. Furthermore, we compare measurements of the IT for an optimal flattop gain profile and for a Gaussianshaped gain profile. For a given pump-beam power, we find that the optimal profile gives a 36% larger ID and somewhat higher IT compared to the Gaussian profile. Specifically, the optimal (Gaussian) profile produces a fractional slow-light ID of 0.94 (0.69) and an IT of 0.86 (0.86) at a pump-beam power of 450 mW and a data rate of 2:5 Gbps. Thus, the optimal profile better utilizes the available pump-beam power, which is often a valuable resource in a system design.

show abstract

Section: System Noise Analysismentioning

confidence: 78%

Section: A Stimulated Brillouin Scatteringmentioning

confidence: 99%

Section: A Stimulated Brillouin Scatteringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

et al. 2011

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hence, the delay time with error-free operation (BER<10 −9 ) is only 83.0 ps. With a 20-dBm Brillouin pump, the BER decreases and then increases with received optical power, which may be mainly attributed to the serious Brillouin ASE noises at higher pump power [18,19] . The eye diagrams of signals with the different pump powers and their corresponding delay times are shown in Fig.…”

mentioning

confidence: 99%

Broadband Brillouin slow light with multiple-longitudinal-mode, tunable pump

Wang¹,

Song²,

Zhang³

2012

中国光学快报

View full text Add to dashboard Cite

We propose and demonstrate broadband Brillouin slow light using a multiple-longitudinal-mode tunable fiber laser as Brillouin pump. A tunable broadband Brillouin pump with a tuning range from 1 520 to 1 555 nm is generated using a fiber ring laser with a semiconductor optical amplifier (SOA) as its gain medium. The pump spectrum consists of a large number of longitudinal modes separated by 6 MHz. The 3-dB bandwidth is about 11.5 GHz, and its fluctuation is less than 100 MHz within the tuning range. An 8-Gb/s data signal can be delayed by up to 83.0 ps (bit error rate < 10 −9 ) at 17-dBm pump power. OCIS codes: 140.3280, 140.3510, 290.5900. doi: 10.3788/COL201210.081401.Slow light based on stimulated Brillouin scattering (SBS) in optical fibers has attracted much interest because of its potential application in future optical communication systems. Brillouin slow light was first demonstrated in fiber [1,2] , the studies have been focusing on the delay of high-speed signals with low distortion. The Brillouin gain bandwidth has to be increased to accommodate the high-speed signal. Numerous approaches have been proposed for generating a broadband Brillouin pump by indirectly modulating a laser source with an optical modulator [3−11] , directly modulating a laser diode [12−19] , and directly slicing the polarized amplified spontaneous emission (ASE) source [20] . Broadband SBS slow light with bandwidths up to tens of gigahertz has been demonstrated by directly modulating laser diodes [12−19] , and the super-Gaussian pump waveform has been used to improve the eye opening and reduce pulse distortion [16−19] . The multiple SBS gain lines generated via the indirect modulation approach have also attracted great interest [3−11] , because they not only broaden the Brillouin gain bandwidth but also achieve large fractional delays with low signal distortion. Moreover, the influence of such modified gain profiles with multiple Brillouin lines on system performance has been studied in detail [9] . However, flat gain lines with both large bandwidth and close spacing are difficult to generate by indirectly modulating the laser source using an electrooptic modulator (EOM) because of its low modulation efficiency and need for complicated driver signals [5,6] . To the best of our knowledge, the maximum gain bandwidth with this approach is only 570 MHz with 30-MHz line spacing [6] , which is insufficient to slow down highspeed signals greater than the gigabit per second range. A simple, cost-effective broadband Brillouin pump with tunable wavelength must be designed to match future optical communication systems.In this letter, we propose and demonstrate broadband Brillouin slow light using a multiple longitudinal mode (MLM) fiber laser as Brillouin pump. The tunable broadband Brillouin pump consists of a MLM fiber ring laser with a semiconductor optical amplifier (SOA) gain medium. An optical channel tunable filter (OCTF) within the ring laser cavity determines the wavelength and the spectral shape of the pump, and a tunable pum...

show abstract

Stimulated Brillouin Scattering

Agrawal¹

2013

Nonlinear Fiber Optics

View full text Add to dashboard Cite

High-fidelity, broadband stimulated-Brillouin-scattering-based slow light using fast noise modulation

Cited by 16 publications

References 21 publications

Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

Information-theoretic analysis of a stimulated-Brillouin-scattering-based slow-light system

Broadband Brillouin slow light with multiple-longitudinal-mode, tunable pump

Stimulated Brillouin Scattering

Contact Info

Product

Resources

About