Tunable twin-guide (TTG) distributed feedback (DFB) laser with over 10 nm continuous tuning range

Wolf, Th.; Illek, S.; Rieger, J.; Borchert, B.; Amann, Markus‐Christian

doi:10.1049/el:19931420

“…The regions of perfectly lined up reflections peak not only shows best SMSR, but also the output power is highest there. The maximum output power is comparable to prior reports on DFB-TTG laser diodes [12,15]. However, one should note that substantially higher output power levels above 20 mW are achievable with optimised devices [15].…”

Section: Lasing and Tuning Characteristicssupporting

confidence: 64%

“…Tuning is now brought about by changing the effective index, either by carrier injection into the tuning region or by heating the device. While tuning due to carrier injection is commonly preferred over electrothermal tuning, it is important to note that either of these methods are suitable to achieve tuning and have been successfully employed [12].…”

Section: Operation Principlementioning

confidence: 99%

“…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]. By replacing the DFB grating with two sections containing sampled gratings (SG) or superstructure gratings (SSG), the (S)SG-TTG laser diode is capable of Vernier effect tuning to achieve wide wavelength tuning.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Todt

¹

,

Jacke

²

,

Laroy

³

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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“…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

Todt

¹

,

Jacke

²

,

Meyer

³

et al. 2005

Novel in-Plane Semiconductor Lasers IV

0

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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.

show abstract

“…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

Todt

¹

,

Jacke

²

,

Meyer

³

et al. 2004

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Tunable twin-guide (TTG) distributed feedback (DFB) laser with over 10 nm continuous tuning range

Cited by 31 publications

References 1 publication

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

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

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

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

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