A /spl lambda//4-shifted sampled or superstructure grating widely tunable twin-guide laser

Morthier, Geert; Moeyersoon, Bart; Baets, Roel

doi:10.1109/68.950732

Cited by 26 publications

(18 citation statements)

References 7 publications

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“…However, requiring at least three tuning currents to set the emission wavelength, the characterization and control of these devices is complicated, time-consuming and, therefore, expensive. Recently, a novel Vernier-effect-based tunable laser, the so-called sampled grating tunable twin-guide (SG-TTG) laser, offering a simplified wavelength control was suggested [5] and experimentally demonstrated [6]. This paper reports the recent progress on the SG-TTG laser.…”

Section: Introductionmentioning

confidence: 99%

Widely Tunable Twin-Guide Laser Diodes with Large Continuous Tuning Range

Todt

Jacke

Meyer

et al. 2006

2006 IEEE 20th International Semiconductor Laser Conference, 2006. Conference Digest.

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Section: Introductionmentioning

confidence: 99%

Widely Tunable Twin-Guide Laser Diodes with Large Continuous Tuning Range

Todt

Jacke

Meyer

et al. 2006

2006 IEEE 20th International Semiconductor Laser Conference, 2006. Conference Digest.

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“…These structures require complex growth and fabrication technologies. Morthier et al [11] have proposed the so-called sampled or superstructure grating widely tunable twin-guide (S)SG-TTG) laser. It is based on the well-known distributed feedback tunable twin-guide (DFB-TTG) laser diode [12].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of Vernier effect tuning in tunable twin-guide laser diodes

Todt

Jacke

Laroy

et al. 2005

IEE Proc., Optoelectron.

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Device and tuning characteristics of superstructure grating tunable twin-guide (SSG-TTG) laser diodes are presented. The devices are based on the distributed feedback (DFB) TTG laser, but comprise sampled or superstructure gratings in order to utilise Vernier effect tuning to extend the tuning range to potentially several tens of nanometres. In contrast to most other existing monolithic widely tunable semiconductor lasers, this device requires only two tuning currents. The first tuning characteristics show distinct regions of high SMSR where continuous wavelength tuning can be carried out. These regions of high SMSR are spaced in agreement with theoretical predictions that are based on the superstructure grating design. Hence, our observations clearly demonstrate Vernier effect tuning for the first time in a TTG-type laser diode.

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“…Only recently, the so-called sampled or superstructure grating tunable twin-guide or (S)SG-TTG laser diode has been suggested. 7 This novel widely tunable laser is based on the tunable twin-guide laser with distributed feedback (DFB-TTG) 8 and is essentially a two-section phase-shifted DFB laser. Since a phase tuning section is not necessary in this device design, only two tuning currents are required to achieve wide quasi-continuous wavelength tuning.…”

Section: Introductionmentioning

confidence: 99%

Wide wavelength tuning of sampled grating tunable twin-guide laser diodes

et al. 2004

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Tunable laser diodes with a tuning range of several tens of nanometers are generally being acknowledged as key components for future generation optical networks. However, all presently available devices suffer from several serious drawbacks. The most well-known issue is the time-consuming calibration procedure that has to be carried out for every single device. Recently the so-called sampled or superstructure grating tunable twin-guide or (S)SG-TTG laser diode has been suggested to overcome some of the prevailing problems. In this paper we will present tuning characteristics of first devices and discuss the influence of facet reflections on the tuning behaviour. The widely tunable twin-guide laser diodes operate around 1.55 µm and have a continuous tuning range of ~ 2 nm. However, by utilizing Vernier-effect tuning, the overall quasi-continuous tuning range is extended to 28 nm. Within this tuning range, five supermodes can be continuously tuned without the occurrence of any mode hops. The side-mode suppression ratio is kept between 25 and 37 dB.

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A /spl lambda//4-shifted sampled or superstructure grating widely tunable twin-guide laser

Cited by 26 publications

References 7 publications

Widely Tunable Twin-Guide Laser Diodes with Large Continuous Tuning Range

Widely Tunable Twin-Guide Laser Diodes with Large Continuous Tuning Range

Demonstration of Vernier effect tuning in tunable twin-guide laser diodes

Wide wavelength tuning of sampled grating tunable twin-guide laser diodes

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