Semiconductor Ring Laser With On-Chip Filtered Optical Feedback for Discrete Wavelength Tuning

Ermakov, Ilya; Beri, Stefano; Ashour, Mohamed; Danckaert, Jan; Docter, B.; Bolk, Jeroen; Leijtens, X.J.M.; Verschaffelt, Guy

doi:10.1109/jqe.2011.2169945

Cited by 41 publications

(28 citation statements)

References 12 publications

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“…λ 2 corresponds to the passband of gate 2. These observations are in good agreement with results in [18,36]. Similar switching behavior is observed in the CW direction, so the wavelength switching in this device happens in both directions whereas the switching in [17] is only in one direction.…”

Section: Experimental Studysupporting

confidence: 89%

Wavelength tuning speed in semiconductor ring lasers using on-chip filtered optical feedback

Verschaffelt

Khoder

Nguimdo

et al. 2014

Silicon Photonics and Photonic Integrated Circuits IV

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Semiconductor ring lasers are promising sources in photonic integrated circuits because they do not require cleaved facets or mirrors to form a laser cavity. In this work, we characterize the wavelength switching speed of a tunable semiconductor ring lasers using filtered optical feedback. The filtered optical feedback is realized by employing two arrayed waveguide gratings to split/recombine light into different wavelength channels. Semiconductor optical amplifiers are placed in the feedback loop in order to control the feedback of each wavelength channel independently. The wavelength switching is achieved by changing the currents injected in the semiconductor optical amplifier gates. Experimentally, we observe a wavelength transition time of 5 ns. However, we also noticed a non-negligible delay in the switching process. [ Khoder et al, IEEE Photon. Technol. Lett. 26, 520-523, 2014]. We numerically reproduce the experimental results using rate equations taking into account the effect of spontaneous emission. The simulations further elaborate on the effect of the noise strength on the wavelength transition time and the delay time.

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Section: Experimental Studysupporting

confidence: 89%

Wavelength tuning speed in semiconductor ring lasers using on-chip filtered optical feedback

Verschaffelt

Khoder

Nguimdo

et al. 2014

Silicon Photonics and Photonic Integrated Circuits IV

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“…These lasers have been fabricated using the Joint European Platform for InP-based integrated components and circuits (JePPiX) [31]. More details of the device design, fabrication and operating regimes can be found in [32]. In order to avoid optical feedback from the chip facets, the output waveguides are tilted by 7 o with respect to the chip facets.…”

Section: Methodsmentioning

confidence: 99%

Fast random bits generation based on a single chaotic semiconductor ring laser

Nguimdo¹,

Verschaffelt²,

Danckaert³

et al. 2012

Opt. Express

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“…Different multiwavelength semiconductor lasers emitting around 1550 nm have already been demonstrated: In [12], multiple lasers were combined to achieve a 16-channel laser source with spectral separations of 0.8 nm. In [13], a four-channel Fabry-Perot laser spectrally deparated by 3.2 nm and in [14], a four-channel ring laser with 1.336 nm spectral separation has been demonstrated, both based on integrated external feedback as the control mechanism. Although these lasers are already integrated and can emit on multiple wavelengths, they are based on arrayedwaveguide-gratings as the wavelength selective element which poses challenges in the design processes as they have a large foot print and lack in ease of use due to multiple gain sections and control currents.…”

Section: Introductionmentioning

confidence: 99%

Compact Dual-Wavelength Lasers on InP Generic Foundry Platform

Pawlus

Breuer

Virte

2019

2019 Conference on Lasers and Electro-Optics Europe &Amp; European Quantum Electronics Conference (CLEO/Europe-EQEC)

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We propose and implement four simple and compact dual-wavelength laser concepts integrated in a Photonic Integrated Circuit (PIC) based on a InP generic foundry platform. In a first step, we arrange two detuned Distributed-Bragg-Reflectors (DBR) in either a sequential or in a parallel order, acting as narrowband wavelength selective cavity mirrors. In a second step, we close the cavities by using either a third DBR or by using a Multimode-Interference-Reflector (MIR). We present LIcharacteristics and optical spectra emitting around 1550 nm with wavelength separations of 1 nm or 10 nm and evaluate their particular potential for simultaneous dual-wavelength emission. In addition, we find either one or multiple equal power points as well as complete switches when the gain current is being tuned. We discuss the characteristics and limitations of each concept including arranging the detuned DBRs in a sequential or parallel order.

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Semiconductor Ring Laser With On-Chip Filtered Optical Feedback for Discrete Wavelength Tuning

Cited by 41 publications

References 12 publications

Wavelength tuning speed in semiconductor ring lasers using on-chip filtered optical feedback

Wavelength tuning speed in semiconductor ring lasers using on-chip filtered optical feedback

Fast random bits generation based on a single chaotic semiconductor ring laser

Compact Dual-Wavelength Lasers on InP Generic Foundry Platform

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