The side-mode-suppression ratio of a tunable DBR laser

Woodward, S.L.; Habbab, I.M.I.; Koch, Thomas; Koren, U.

doi:10.1109/68.62008

Cited by 19 publications

(3 citation statements)

References 4 publications

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“…12 (blue line). Similar oscillations of power and side mode suppression ratio (SMSR) were also observed in [11] and [12]. These oscillations can be explained by observing the mutual positioning of the cavity modes with respect to the mirror loss spectrum α m (λ) and the net gain spectrum g net (λ), and its variation during the DBR tuning, as is shown in Fig.…”

Section: Model and Simulation Results For Mqw Tldsupporting

confidence: 64%

Performance of Widely Tunable Multi-Quantum-Well and Bulk Laser Diodes and the Main Limiting Factors

Kyritsis

Zakhleniuk

2017

IEEE J. Quantum Electron.

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The output power and tuning performance of multi-quantum-well (MQW) and bulk InGaAsP/InP-distributed Bragg reflector (DBR) tunable laser diodes (TLDs) are investigated over a wide wavelength tuning range using physics-based PICS3D and VPI laser simulation tools within the travelling-wave formalism. The key result of our simulations is the discovery of a new effect in TLDs due to intervalence band absorption (IVBA) in passive phase and DBR sections, which limits the wavelength tuning range. The physical mechanism responsible for such a behavior is a collapse of the spectral-mode selectivity by the DBR due to large IVBA losses in the phase or/and DBR sections. We fundamentally demonstrate different roles played by the IVBA in the active and passive sections of a TLD. It is shown that the IVBA in passive sections and the carrier relaxation broadening (CRB) of the Lorentzian lineshape function in the lasers' active and passive sections play a crucial role in TLD tuning operation. The IVBA coefficient k IVBA and the intraband relaxation time τ in are the major limiting factors that define the output power variation and the achievable tuning range of the lasers. Both bulk and MQW lasers with small k IVBA demonstrate a wide wavelength tuning range above 30 nm, while for large k IVBA , the tuning range drops below 10 nm. We show that the output power variation with tuning due to the CRB parameter τ in is qualitatively different in bulk and MQW TLDs. The TLD tuning and power performance is also strongly affected by the shapes of the net gain and the cavity mirror loss spectra and their mutual positioning with respect to the lasing cavity mode during the tuning. The limiting parameters k IVBA and τ in as well as gain and mirror loss spectra must be thoroughly evaluated in each TLD structure prior to the device design and optimization in order to achieve the best performance in terms of the wavelength tuning and the output power stability.

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Section: Model and Simulation Results For Mqw Tldsupporting

confidence: 64%

Performance of Widely Tunable Multi-Quantum-Well and Bulk Laser Diodes and the Main Limiting Factors

Kyritsis

Zakhleniuk

2017

IEEE J. Quantum Electron.

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“…At the same time, the injection of the grating current will change the power of the main mode and the reflectivities of the main mode and side mode, which will cause the SMSR to change. 18 The tuning characteristic of the phase section is to achieve quasicontinuous wavelength tuning without changing the output power. 19 Figure 1(e) shows the output power of the laser versus I phase .…”

Section: Device Characterization and Theory Of Dual-pattern Communicationmentioning

confidence: 99%

Dual-pattern communication system using DBR laser in the intensity-modulation and direct-detection system

Sun

Wen

et al. 2021

Opt. Eng.

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“…1 [1][2][3][4] . In such Laser Structures, each section has a specific influence on the emitted beam.…”

Section: Introductionmentioning

confidence: 99%

Correlation between tuning section electrical noise and optical amplitude fluctuations in DBR two- and three-section tunable lasers emitting around 1.55 μm

et al. 2003

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Tunable Lasers are key-components for Wavelength Division Multiplexing optical communication applications at 1.55µm. In this paper, we report the analysis of the correlation function between the active or passive section electrical noise power spectral density and the optical noise power spectral density. We performed this study in two opposite SMSR ("Side Mode Suppression Ratio") configurations, i.e. high SMSR (monomode configuration) values and low SMSR (mode competition configuration) values, in a low to medium frequency range, from 1Hz to 500kHz. The active section/optical beam correlation measurements are given as reference in order to allow a qualitative and quantitative comparison with the passive section/optical beam correlation results. The new field of investigation is the correlation between the optical beam noise and the Bragg section electrical noise. The aim of this analysis is to show the contribution of the Bragg section electrical noise into the beam optical noise. Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/24/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Proc. of SPIE Vol. 5111 247 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/24/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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The side-mode-suppression ratio of a tunable DBR laser

Cited by 19 publications

References 4 publications

Performance of Widely Tunable Multi-Quantum-Well and Bulk Laser Diodes and the Main Limiting Factors

Performance of Widely Tunable Multi-Quantum-Well and Bulk Laser Diodes and the Main Limiting Factors

Dual-pattern communication system using DBR laser in the intensity-modulation and direct-detection system

Correlation between tuning section electrical noise and optical amplitude fluctuations in DBR two- and three-section tunable lasers emitting around 1.55 μm

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