Extended modulation bandwidth of DBR and external cavity lasers by utilizing a cavity resonance for equalization

Morthier, Geert; Schatz, Richard; Kjebon, O.

doi:10.1109/3.892568

Cited by 86 publications

(50 citation statements)

References 9 publications

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“…kc is the external feedback coefficient (per unit time) and  the roundtrip time in the external cavity [7]. Numerical results using this analytical formula are shown in Figure A.1 for 4 different values of kc and for a delay  of 20 ps.…”

Section: Appendix Influence Of External Feedback On Intensity Modulatmentioning

confidence: 97%

“…As has been shown several years ago [7], a DFB laser connected to an external cavity exhibits a second resonance peak in its modulation response, a photon-photon resonance or external cavity resonance at a resonance angular frequency given by the inverse of the roundtrip time in the external cavity. For this photon-photon resonance (or PPR in short) to be able to extend the modulation bandwidth, both the strength, the phase and the roundtrip time need have the right values and such external cavities can be well designed in the silicon waveguides.…”

Section: Advantages Of Using Inp Membranes On Silicon-on-insulatomentioning

confidence: 98%

See 1 more Smart Citation

43 Gb/s NRZ-OOK Direct Modulation of a Heterogeneously Integrated InP/Si DFB Laser

Abbasi

Keyvaninia

Verbist

et al. 2017

J. Lightwave Technol.

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Abstract-We discuss how InP membrane laser diodes, heterogeneously integrated on SOI can be designed for high speed operation and how one can take advantage of the heterogeneous integration. This is illustrated with several static and dynamic characteristics of fabricated 1550nm lasers. We show non-return to zero on-off keying at 43 Gb/s and report link experiments over 2 km of nonzero dispersion shifted fiber with the directly modulated laser diodes.

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Section: Appendix Influence Of External Feedback On Intensity Modulatmentioning

confidence: 97%

Section: Advantages Of Using Inp Membranes On Silicon-on-insulatomentioning

confidence: 98%

43 Gb/s NRZ-OOK Direct Modulation of a Heterogeneously Integrated InP/Si DFB Laser

Abbasi

Keyvaninia

Verbist

et al. 2017

J. Lightwave Technol.

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show abstract

“…Then, we need to obtain and hence for only. From the boundary conditions (24), vectors are obtained as (29) where is the matrix (30) Having obtained and , we may calculate from (25). The Green's functions to be used when obtaining in (22) are then found using .…”

Section: Small-signal Analysismentioning

confidence: 99%

General Method for Calculating the Response and Noise Spectra of Active Fabry–Perot Semiconductor Waveguides With External Optical Injection

Blaaberg

Mørk

2009

IEEE J. Quantum Electron.

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Abstract-We present a theoretical method for calculating small-signal modulation responses and noise spectra of active Fabry-Perot semiconductor waveguides with external light injection. Small-signal responses due to either a modulation of the pump current or due to an optical amplitude or phase modulation of the input field can be calculated. Both responses and noise spectra are given through semianalytical expressions taking into account the longitudinal extent and finite end-facet reflectivities of the active device. Different examples of responses and spectra are presented for semiconductor optical amplifiers and an injection-locked laser. We also demonstrate the applicability of the method to analyze slow and fast light effects in semiconductor waveguides. Finite reflectivities of the facets are found to influence the phase changes of the injected microwave-modulated light.

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“…The result is the same as refs. [8] and [14]. In our device light is confined from top and bottom mirrors, so the light travels zigzag in a lateral direction.…”

Section: Structure and Modelingmentioning

confidence: 99%

“…We have been working on the optical external feedback to enhance the modulation bandwidth of VCSELs [7]. While the optical feedback scheme has been successfully demonstrated for increasing the speed of DFB/DBR in-plane lasers [8,9], there have been difficulties in VCSELs resulting from their stability of longitudinal modes in making external cavities. Also, a monolithic integration approach for optical feedback has been difficult.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth enhancement of single-mode VCSEL with lateral optical feedback of slow light

Dalir

Koyama

2011

IEICE Electron. Express

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Abstract:In this paper a novel method to increase the modulation bandwidth of vertical-cavity surface-emitting lasers (VCSEL) is proposed. The modeling predicts that the modulation bandwidth can be enhanced by 60% with lateral optical feedback. Even if the relaxation oscillation frequency is below 15 GHz without optical feedback, the modulation bandwidth can reach at 40 GHz beyond the limit of a relaxation oscillation frequency. Small and large-signal-modulation analysis is carried out. The result shows a potential of high-speed modulation beyond 40 Gbps for use in low-power consumption optical interconnects.

show abstract

Extended modulation bandwidth of DBR and external cavity lasers by utilizing a cavity resonance for equalization

Cited by 86 publications

References 9 publications

43 Gb/s NRZ-OOK Direct Modulation of a Heterogeneously Integrated InP/Si DFB Laser

43 Gb/s NRZ-OOK Direct Modulation of a Heterogeneously Integrated InP/Si DFB Laser

General Method for Calculating the Response and Noise Spectra of Active Fabry–Perot Semiconductor Waveguides With External Optical Injection

Bandwidth enhancement of single-mode VCSEL with lateral optical feedback of slow light

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