Bragg Section Effects on Linewidth and Lineshape in 1.55-&amp;lt;tex&amp;gt;$mu $&amp;lt;/tex&amp;gt;m DBR Tunable Laser Diodes

Signoret, Philippe; Myara, M.; Tourrenc, J.P.; Orsal, B.; Monier, M.-H.; Jacquet, J.; LeBoudec, P.; Marín, F.

doi:10.1109/lpt.2004.826707

Cited by 26 publications

(17 citation statements)

References 12 publications

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“…The disappearance of the -peak can be regarded as the criterion of coherence elimination and the lineshape broadening at the moment can be used as the optical linewidth. Up to date, lots of methods for analyzing lineshape and linewidth have been established in the past two decades (Chan, 2007;Dawson et al, 1992;Ludvigsen et al, 1998;Richter et al, 1986;Signoret et al, 2001;Signoret et al, 2004;Zhu et al, 2010). The method widely used for analyzing lineshape is delayed self-heterodyne technique.…”

Section: Dependence Of Frequency Coherence On Delay Timementioning

confidence: 99%

Optical Spectral Structure and Frequency Coherence

Zhu¹,

Li²,

Ke³

et al. 2011

Optoelectronic Devices and Properties

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Section: Dependence Of Frequency Coherence On Delay Timementioning

confidence: 99%

Optical Spectral Structure and Frequency Coherence

Zhu¹,

Li²,

Ke³

et al. 2011

Optoelectronic Devices and Properties

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“…Previous work in characterizing the linewidth of widely tunable lasers has mainly been concerned with its influence in OOK systems. It has been pointed out that DBR-based lasers exhibit enhanced low frequency phase noise due to electrical noise (shot noise and electrical pick-up) in the passive tuning sections [11][12][13]. This low frequency noise is less readily converted by fiber dispersion into intensity noise that would lead to additional power penalties in OOK transmission systems.…”

Section: Introductionmentioning

confidence: 99%

Linewidth of SG-DBR laser and its effect on DPSK transmission

Shi

Smyth

Anandarajah

et al. 2010

Optics Communications

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“…These lasers posses important technological advantages which are a small size, direct operation with electric pumping and the possibility of low cost fabrication in high numbers in a chip format. However, the bandwidth of DBR and DFB lasers is typically rather large, a few MHz, and rapid wavelength tuning is possible only over the range of a few nanometers [11,12]. DBR and DFB lasers may be fabricated such that some of the optical properties can be improved, at the expense of others.…”

Section: Introductionmentioning

confidence: 99%

“…The two main approaches are monolithic semiconductor lasers, such as, on the one hand, distributed Bragg reflector (DBR) lasers or distributed feedback (DFB) lasers, and external cavity semiconductor lasers (ECSL) on the other hand. The bandwidth of DBR and DFB lasers is typically a few MHz and wavelength tuning (within microor nanoseconds) is possible over the range of a few nanometers [11,12]. DBR and DFB lasers are not suitable if a narrower bandwidth combined with wider tunability is required.…”

Section: Introductionmentioning

confidence: 99%

“…DBR and DFB lasers are not suitable if a narrower bandwidth combined with wider tunability is required. ECSLs can reach bandwidths well below 1 MHz and wide tunability [11,12,18,19], if fluctuations in the optical cavity length are avoided, which is mechanically challenging. The Schawlow-Townes limit can only be reached by removing acoustic perturbations and by avoiding any minute errors in the positioning of the optical components inside the cavity [18].…”

Section: Introductionmentioning

confidence: 99%

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Spectral control of diode lasers using external waveguide circuits

Oldenbeuving¹

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Cover: False-color Scanning Electron Microscope (SEM) picture of the electrical wires and heaters on the optical waveguide chip, which is used as external cavity for diode laser control (see Chapter 2). Because the SEM is zoomed-out very far, electron beam distortion is caused by the SEM's focusing magnet. This produces the fish-eye effect in the picture. The research presented in this thesis was carried out at the Laser Physics and Nonlinear Optics group, Department of Science and Technology, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands. This research is supported by the Dutch Technology Foundation STW, which is part of the Netherlands Organization for Scientific Research (NWO) and partly funded by the Ministry of Economic Affairs (project number 10442). To my loving parents. SummaryIn this Thesis we investigate spectral control of diode lasers using external waveguide circuits. The purpose of this work is to investigate such external control for providing a new class of diode lasers with technologically interesting properties, such as a narrow spectral bandwidth and spectrally tunable output in a hybrid integrated format. These lasers are of interest in a variety of scientific and industrial applications. To give a state-of-the-art example, we consider optical beam forming networks, that can be used in phased antenna arrays for satellite communications. These type of networks require spectral tuning and a narrow laser bandwidth to increase the spatial resolution of the antenna's signal [1][2][3]. In such microwave photonics applications, the option for an integration of entire arrays of lasers and waveguide circuits is required, as well as the option of multiple injection locking for a control of the optical phase of the output.Another example is the simultaneous spectral and phase control of entire arrays of diode lasers. The superimposed output may offer the generation of trains of ultrashort pulses, which is equivalent with the generation of a phase locked comb of equidistant frequencies. Such sources can, for example, be of interest for high-speed optical data storage.In the first chapter, we discuss the theoretical design considerations and spectral properties for a waveguide based external cavity semiconductor laser (WECSL). The essential requirements to realize single-frequency operation with a WECSL are analyzed. We investigated the required properties for the two main components that comprise the WECSL, which are the semiconductor gain chip and the frequency selective waveguide circuit that provides the external feedback. The specific implementation of a highly frequency selective feedback via two micro ring resonators (MRRs), based on available low loss Si 3 N 4 /SiO 2 waveguide technology, is described in more detail. The values for the design parameters in this implementation indicate that it is possible to obtain single-frequency oscillation across the entire telecommunication C-band (1530-1565 nm). Furthermore, we expect a narrow optica...

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Bragg Section Effects on Linewidth and Lineshape in 1.55-<tex>$mu $</tex>m DBR Tunable Laser Diodes

Cited by 26 publications

References 12 publications

Optical Spectral Structure and Frequency Coherence

Optical Spectral Structure and Frequency Coherence

Linewidth of SG-DBR laser and its effect on DPSK transmission

Spectral control of diode lasers using external waveguide circuits

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