Fabrication-tolerant 1310nm laterally coupled distributed feedback lasers with high side mode suppression ratios

Millett, R.; Dridi, Kais; Benhsaien, Abdessamad; Schriemer, Henry; Hinzer, Karin; Hall, Trevor J.

doi:10.1016/j.photonics.2011.01.003

Cited by 13 publications

(3 citation statements)

References 10 publications

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“…Figure 5 shows a lasing spectrum of the LC-DFB laser, where the maximum SMSR of 52 dB has been achieved at 20°C with an injection current of 290 mA and a lasing wavelength of 1313.27 nm. This maximum SMSR value is better than that of most commercially available DFB lasers in this wavelength region [22] . The outstanding SMSR performance is attributed to the good match of mode wavelength selected by the Cr gratings and the peak of the gain profile.…”

Section: Resultsmentioning

confidence: 66%

InAs/GaAs quantum dot laterally coupled distributed feedback lasers at 1.3 μm

Zhao

Han

et al. 2023

中国光学快报

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We report the InAs/GaAs quantum dot laterally coupled distributed feedback (LC-DFB) lasers operating at room temperature in the wavelength range of 1.31 μm. First-order chromium Bragg gratings were fabricated alongside the ridge waveguide to obtain the maximum coupling coefficient with the optical field. Stable continuous-wave single-frequency operation has been achieved with output power above 5 mW/facet and side mode suppression ratio exceeding 52 dB. Moreover, a single chip integrating three LC-DFB lasers was tentatively explored. The three LC-DFB lasers on the chip can operate in single mode at room temperature, covering the wavelength span of 35.6 nm.

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Section: Resultsmentioning

confidence: 66%

InAs/GaAs quantum dot laterally coupled distributed feedback lasers at 1.3 μm

Zhao

Han

et al. 2023

中国光学快报

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“…[22][23][24][25] In additional recent work, improvements in low-loss, high-power operation have been achieved by etched lateral grating fabrication, 13 or by use of a twostep ridge etch process for minimal lateral current spreading. 26 On the other hand, higher side mode discrimination in relatively short cavities has been achieved by operation with a narrower ridge waveguide of 1.7 lm width, 27 introducing first-order 28,29 or optimized third-order [30][31][32][33][34] Bragg gratings on the ridge waveguide sidewalls, or by use of focused ion beam lithography (FIB) in LC-DFB 35 and LC-DBR 36,37 configurations. Notably, chirped CRW gratings for the better control over the coupling coefficient have been also investigated.…”

Section: Introductionmentioning

confidence: 99%

Laterally coupled distributed feedback lasers emitting at 2 μm with quantum dash active region and high-duty-cycle etched semiconductor gratings

Papatryfonos

Saladukha

Merghem

et al. 2017

Journal of Applied Physics

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Single-mode diode lasers on an InP(001) substrate have been developed using InAs/In0.53Ga0.47As quantum dash (Qdash) active regions and etched lateral Bragg gratings. The lasers have been designed to operate at wavelengths near 2 μm and exhibit a threshold current of 65 mA for a 600 μm long cavity, and a room temperature continuous wave output power per facet >5 mW. Using our novel growth approach based on the low ternary In0.53Ga0.47As barriers, we also demonstrate ridge-waveguide lasers emitting up to 2.1 μm and underline the possibilities for further pushing the emission wavelength out towards longer wavelengths with this material system. By introducing experimentally the concept of high-duty-cycle lateral Bragg gratings, a side mode suppression ratio of >37 dB has been achieved, owing to an appreciably increased grating coupling coefficient of κ ∼ 40 cm−1. These laterally coupled distributed feedback (LC-DFB) lasers combine the advantage of high and well-controlled coupling coefficients achieved in conventional DFB lasers, with the regrowth-free fabrication process of lateral gratings, and exhibit substantially lower optical losses compared to the conventional metal-based LC-DFB lasers

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“…Such design eliminates the regrowth steps required in the fabrication of conventional DFB lasers and hence, simplifies the fabrication process, and, ultimately, reduces manufacturing cost and time 3,4 . In addition, using high-order grating, more relaxed lithographic tolerances are thus allowed, which induces a major simplification in the fabrication process and enhances the manufacturing yield 5 .…”

Section: Introductionmentioning

confidence: 99%