Papers by Ramón Maldonado-basilio
IEEE Transactions on Terahertz Science and Technology, 2012
... E. Degirmenci, Student Member, IEEE, F. Surre, Member, IEEE, S. Philippe, Member, IEEE, R. Ma... more ... E. Degirmenci, Student Member, IEEE, F. Surre, Member, IEEE, S. Philippe, Member, IEEE, R. Maldonado-Basilio, Member, IEEE, and P. Landais, Senior Member, IEEE ... For these dispersion curves, the pe-riodicity is broken on x-axis by removing one and two rows of rods of the ...
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CLEO: 2014, 2014
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2010 12th International Conference on Transparent Optical Networks, ICTON 2010, 2010
A bulk semiconductor optical amplifier (SOA) utilizing a multi-contact biasing method is characte... more A bulk semiconductor optical amplifier (SOA) utilizing a multi-contact biasing method is characterized as a function of the bias current supplied to each section Firstly, amplified spontaneous emission spectra and characteristic light-current profiles are analyzed. Single-pass gain and noise figure of the SOA are then assessed by injecting a continuous wave input beam. Finally, the amplification of a 10 Gb/s
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International Conference on Transparent Optical Networks, 2011
In this paper, a detection scheme based on four wave mixing in a semiconductor optical amplifier ... more In this paper, a detection scheme based on four wave mixing in a semiconductor optical amplifier (SOA) is used to measure the frequency and bandwidth of the optical terahertz beat-tone signal generated by a passively mode locked semiconductor laser. Two signals from external cavity lasers are injected into an SOA, which acts as a local oscillator at their detuning frequency. The device under test is a passively mode locked laser with a beattone frequency in the terahertz spectrum. Its optical signal is injected in the SOA, which also acts as a frequency mixer. The frequency and linewidth of the terahertz signal are then measured by retrieving the intermediate frequency detected by a low bandwidth photodiode and an electrical spectrum analyser.
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A photonic circuit design for implementing frequency 8-tupling and 24-tupling is proposed. The fr... more A photonic circuit design for implementing frequency 8-tupling and 24-tupling is proposed. The front- and back-end
of the circuit comprises 4 × 4 MMI couplers enclosing an array of four pairs of phase modulators and 2 × 2 MMI
couplers. The proposed design for frequency multiplication requires no optical or electrical filters, the operation
is not limited to carefully adjusted modulation indexes, and the drift originated from static DC bias is mitigated by
making use of the intrinsic phase relations of multi-mode interference couplers. A transfer matrix approach is used
to represent the main building blocks of the design and hence to describe the operation of the frequency 8-tupling
and 24-tupling. The concept is theoretically developed and demonstrated by simulations. Ideal and imperfect power
imbalances in the multi-mode interference couplers, as well as ideal and imperfect phases of the electric drives to
the phase modulators, are analyzed.
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Optics Letters, 2011
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Optics Letters, 2011
Linewidth narrowing of the radio frequency beat-tones and the optical-modes is experimentally inv... more Linewidth narrowing of the radio frequency beat-tones and the optical-modes is experimentally investigated in a ∼40 GHz quantum-dash mode-locked laser diode subject to optical injection of 10 GHz pulses. In comparison to the 75 kHz linewidth exhibited by the beat-tones in passive mode-locking conditions, a remarkable reduction to less than 8 Hz is achieved when the laser is under optical injection. From this beat-tone signal, an integrated root-mean-square timing jitter of 64 fs is calculated. In addition, a quadratic profile of the optical linewidth with the wavelength is observed in active locking, reaching a minimum of 1.7 MHz for the longitudinal modes around 1530 nm and progressively increasing to 37.4 MHz for modes at 1525 nm.
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Optics Letters, 2011
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Optics Express, 2008
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Applied Physics Letters, 2010
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annals of telecommunications - annales des télécommunications, 2013
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annals of telecommunications - annales des télécommunications, 2013
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Papers by Ramón Maldonado-basilio
of the circuit comprises 4 × 4 MMI couplers enclosing an array of four pairs of phase modulators and 2 × 2 MMI
couplers. The proposed design for frequency multiplication requires no optical or electrical filters, the operation
is not limited to carefully adjusted modulation indexes, and the drift originated from static DC bias is mitigated by
making use of the intrinsic phase relations of multi-mode interference couplers. A transfer matrix approach is used
to represent the main building blocks of the design and hence to describe the operation of the frequency 8-tupling
and 24-tupling. The concept is theoretically developed and demonstrated by simulations. Ideal and imperfect power
imbalances in the multi-mode interference couplers, as well as ideal and imperfect phases of the electric drives to
the phase modulators, are analyzed.
of the circuit comprises 4 × 4 MMI couplers enclosing an array of four pairs of phase modulators and 2 × 2 MMI
couplers. The proposed design for frequency multiplication requires no optical or electrical filters, the operation
is not limited to carefully adjusted modulation indexes, and the drift originated from static DC bias is mitigated by
making use of the intrinsic phase relations of multi-mode interference couplers. A transfer matrix approach is used
to represent the main building blocks of the design and hence to describe the operation of the frequency 8-tupling
and 24-tupling. The concept is theoretically developed and demonstrated by simulations. Ideal and imperfect power
imbalances in the multi-mode interference couplers, as well as ideal and imperfect phases of the electric drives to
the phase modulators, are analyzed.