Nonlinearly broadened phase-modulated continuous-wave laser frequency combs characterized using DPSK decoding

Huang, Chen‐Bin; Park, Sang Gyu; Leaird, Daniel E.; Weiner, Andrew M.

doi:10.1364/oe.16.002520

Cited by 69 publications

(42 citation statements)

References 27 publications

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“…19 Wu et al used two IM followed by one PM to achieve flat spectrum, and they successfully achieved 38 lines with power fluctuation 1 dB. 20 Chen et al implemented a configuration almost the same as the one mentioned in Ref.…”

Section: System Evaluationmentioning

confidence: 99%

Multiwavelength based on nonlinear optics of intensity and phase modulators

Eltaif

2017

Opt. Eng

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Abstract. This paper presents a simple method for generating multiwavelength using a nonlinear effect of cascaded intensity and phase modulators. Both of the modulators are driven by sinusoidal waveform. The multiwavelength lasing can be achieved by setting the ideal value of the amplitude of the sinusoidal waveform, and the flatness of the generated wavelengths can be improved by setting an optimum value of the direct current (DC) bias of intensity modulator. Moreover, single-mode fiber along with Raman scattering effect is needed to amplify and suppress the side bands; hence, a customized number of wavelengths can be achieved. Results show that more flatness wavelengths could be achieved when the DC bias to amplitude ratio is within the range (α ¼ 0.1 to 0.14). Moreover, α to phase modulator's voltage ratio should be 0.1. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: System Evaluationmentioning

confidence: 99%

Multiwavelength based on nonlinear optics of intensity and phase modulators

Eltaif

2017

Opt. Eng

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“…Instead of using a mode-locked laser that requires complicated stabilization schemes and often results in low-frequency spacing, a stable frequency comb source can be obtained by externally modulating a CW laser. A common approach is to inject a narrowlinewidth CW laser into an electro-optical phase/intensity modulator, which is then applied with a strong radiofrequency sinusoidal modulation signal for side-band generation [39,40]. The resulting frequency comb spacing is equal to the modulation (radio)frequency.…”

Section: Optical Millimeter-wave Sourcesmentioning

confidence: 99%

Millimeter-wave photonic wireless links for very high data rate communication

2011

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T he most useful wireless communication band is located in the frequency range of 0.3-3.5 GHz for reasons of compact antenna size, low propagation loss and good penetration through buildings [1]. However, wireless carrier frequencies are being pushed higher due to emerging high-bandwidth applications, which include next-generation smart cell phones [1] and wireless linking for three-dimensional super high-definition television [2]. As a result, the millimeter-wave (MMW) bands at 60 (V-band), 120 (D-band) and even higher than 300 GHz are beginning to attract attention due to their 'unlicensed' usage [2][3][4][5][6][7][8].Several key front-end components have been developed employing the already mature silicon-based complementary metal-oxide-semiconductor (CMOS) integrated-circuit (IC) technology for wireless communication in the V (50-75 GHz) and W (75-110 GHz) bands or even higher operating frequencies for wireless communication [9]. Recently, a 60 GHz CMOS transceiver module [10] and system comprised of antennas, 60 GHz power amplifiers, local oscillators and baseband ICs has been commercially developed by SiBEAM (USA). In addition, advanced InP-based high electron mobility transistors (InP-HEMTs) and heterojunction bipolar transistors have been used to develop some high-speed ICs and key components that operate at 125 GHz [11,12] or greater than 300 GHz [13,14] for >1 Gbit s -1 wireless communication systems.However, MMW signals suffer substantial propagation loss in free space [8]. This problem and their inherent straight-line path of propagation affect connections and synchronization between the different parts of the whole communication system [15]. A promising solution to overcome this problem is the radio-over-fiber (RoF) technique [3,4,16,17], in which the MMW local-oscillator signal and data are both distributed through a low-loss optical fiber and only radiated over the last mile to the end user. Figure 1 shows a schematic representation of this approach, illustrating the motivation and working principles of two MMW-over-fiber communication systems. Figure 1(a) shows the additional electrical-to-optical (E-O) and optical-to-electrical (O-E) conversion processes used in the central office and base station, respectively. The optical MMW signal is distributed remotely through a low-loss fiber from the central office to several base stations, effectively eliminating the huge propagation loss of the MMW signal that occurs in an electrical transmission line or free space.

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“…In this work we demonstrate the use of optical combs [20], [21] in concert with high-resolution optical filtering [22] for measurement of photodiode harmonic distortion [23]. The use of parallel optical phase modulators to generate two optical combs from the same erbium fiber laser removes both the effects of laser frequency drift and the need for modulator bias control.…”

Section: Introductionmentioning

confidence: 99%

Optical Comb Sources and High-Resolution Optical Filtering for Measurement of Photodiode Harmonic Distortion

McKinney

Leaird

Hastings

et al. 2010

J. Lightwave Technol.

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Abstract-In this work we preset a new technique for measurement of harmonic distortion in microwave photodiodes. Our technique combines optical combs and high-resolution optical filtering to provide a pure optical two-tone excitation of the photodiode. Our technique removes the challenges presented by laser frequency drift and modulator bias control by utilizing a single laser and phase-modulation to synthesize the optical combs. We demonstrate our technique through measurement of the harmonic distortion generated in a commercial InGaAs photodiode and compare our results with those obtained via phase-locked laser measurements. We show that this technique provides essentially equivalent measurement fidelity to phase-locked laser techniques while offering decreased system complexity. We additionally provide a general discussion of the limits of nonlinearity measurements performed using optical heterodyne techniques.

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Nonlinearly broadened phase-modulated continuous-wave laser frequency combs characterized using DPSK decoding

Cited by 69 publications

References 27 publications

Multiwavelength based on nonlinear optics of intensity and phase modulators

Multiwavelength based on nonlinear optics of intensity and phase modulators

Millimeter-wave photonic wireless links for very high data rate communication

Optical Comb Sources and High-Resolution Optical Filtering for Measurement of Photodiode Harmonic Distortion

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