Experimental and theoretical studies of a high repetition rate fiber laser, mode-locked by external optical modulation

Zoiros, Kyriakos E.; Stathopoulos, T.; Vlachos, K.; Hatziefremidis, Antonios; Houbavlis, T.; Papakyriakopoulos, T.; Avramopoulos, H.

doi:10.1016/s0030-4018(00)00708-2

Cited by 31 publications

(5 citation statements)

References 49 publications

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“…4). The RZ pulse format can also be generated by directly applying the mode-locked ring laser source at the input of the MZI (Zoiros et al 2000), but it results in considerably chirped pulses.…”

Section: Scheme To Generate Return-to-zero (Rz) Pulse Formatmentioning

confidence: 99%

Implementation of 2-bit multiplier based on electro-optic effect in Mach–Zehnder interferometers

et al. 2015

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This paper demonstrates the structure and working principle of an optical 2-bit multiplier using lithium niobate (LiNbO 3 ) based Mach-Zehnder interferometer (MZI). The powerful ability of MZI structures to switch the optical signal from one output port to the other output port has been used in the implementation of the proposed 2-bit multiplier. The paper constitutes the mathematical description of the 2-bit multiplier and thereafter compilation using MATLAB. The study is carried out by simulating the proposed device with Beam propagation method (BPM).

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Section: Scheme To Generate Return-to-zero (Rz) Pulse Formatmentioning

confidence: 99%

Implementation of 2-bit multiplier based on electro-optic effect in Mach–Zehnder interferometers

et al. 2015

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“…An experimental and theoretical method of a high repetition rate laser source operating on a novel mode-locking technique is presented in (Zoiros et al 2000). For the proposed structure, the return-to-zero (RZ) pulse can be generated by using a continuous-wave optical source (such as DFB laser) followed by a two stage external modulator.…”

Section: Scheme To Generate Return-to-zero (Rz) Pulse Formatmentioning

confidence: 99%

Design of universal shift register based on electro-optic effect of LiNbO3 in Mach–Zehnder interferometer for high speed communication

2015

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An optical universal shift register has been demonstrated based on the electrooptic effect of lithium niobate (LiNbO 3 ) in Mach-Zehnder interferometer (MZI), which can be used as a building block for optical computing and optical signal processing systems. The proposed device comprises of two serially connected optical D flip-flops and two multiplexers. Each optical D flip-flop consists out of three MZIs sharing a single clock pulse. The two cascaded multiplexers are controlled by the electric pulses in order to perform the bidirectional shifting and parallel loading operation of optical pulses. The pulse shifting behavior is analyzed using Beam propagation method and verified with the help of MATLAB simulations and function table.

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“…In either case, the width of the mode-locked pulse increases. The most important parameters that are crucial in the formation of the mode-locked pulse for any repetition frequency are mainly the cavity loss, the pulsewidth, average power of the external pulsetrain, and the small signal gain of the SOA [41]. The SOA carrier lifetime is not crucial in the sense that gain recovery is independent of the pulse energy and pulsewidth.…”

Section: Experimental Setup Of the Semiconductor Fibermentioning

confidence: 99%

Ultrafast Semiconductor-Based Fiber Laser Sources

Vlachos¹,

Bintjas

Pleros

et al. 2004

IEEE J. Select. Topics Quantum Electron.

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Abstract-In this paper, a novel ring laser platform is presented that uses a single active element, a semiconductor optical amplifier (SOA), to provide both gain and gain modulation in the optical cavity. Gain modulation is achieved by an externally introduced optical pulsed signal. This signal periodically saturates the amplifier gain and forces the ring laser to mode lock. Using this laser platform, we demonstrate picosecond pulsetrain generation at repetition rates up to 40 GHz, either in single or multiwavelength operation mode. In particular, using rational harmonic mode locking, 2.5-ps pulses were obtained up to a 40-GHz repetition rate, while output pulses and output power were constant over a 20-nm tuning range. In addition, a multiwavelength optical signal was obtained using the same laser platform with the addition of a Fabry-Pérot filter for comb generation. Multiwavelength oscillation is possible due to the broad gain spectrum of the SOA used and its inhomogeneous line broadening. To this end, 48 oscillating wavelengths were obtained at the laser output, with 50-GHz line spacing. Combining both modes of operation, it was possible to mode lock the oscillating multiwavelength signal and to obtain at the output ten wavelength channels, simultaneously mode locked at a 30-GHz repetition rate. The mode-locked channels are temporarily synchronized and exhibit almost identical spectral and time characteristics.

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Experimental and theoretical studies of a high repetition rate fiber laser, mode-locked by external optical modulation

Cited by 31 publications

References 49 publications

Implementation of 2-bit multiplier based on electro-optic effect in Mach–Zehnder interferometers

Implementation of 2-bit multiplier based on electro-optic effect in Mach–Zehnder interferometers

Design of universal shift register based on electro-optic effect of LiNbO3 in Mach–Zehnder interferometer for high speed communication

Ultrafast Semiconductor-Based Fiber Laser Sources

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