30-Gbps Directly Modulated Semiconductor Lasers Based on Surface High-Order Gratings

Ma, Pijie; Jia, Yanming; Liu, Anjin; Chen, Jingxuan; Wang, Mingjin; Li, Jing; Zheng, Wanhua

doi:10.1109/lpt.2021.3049859

Cited by 6 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Single mode index-pattern Fabry-Perot (IP FP) lasers can be a viable replacement for DFB or DBR lasers offering simplified fabrication and photonic integration [6], [7], [8]. The benefit of such lasers is that they can be realized using low-resolution photolithography and requires a few fabrication steps [9]. This in turn leads to significantly lower costs.…”

Section: Introductionmentioning

confidence: 99%

Design of a Low Threshold Single-Mode In-P Laser Using Regrowth-Free Fabrication

Sharma,

Landais,

Srivastava

et al. 2024

IEEE Photonics J.

View full text Add to dashboard Cite

We describe the design procedure, optimization, and fabrication cycle of an index-pattern FP laser on an InP platform. The design parameters of the ridge and reflector (based on slots) are extracted through simulations. In addition, the performance of reflectors with varying slot widths is analyzed. Subsequently, the extracted parameters are used in a rate equation model to predict the performance of the laser in terms of its L−I characteristics and the sidemode suppression ratio (SMSR). Moreover, the simulated results are compared with the experimental characterization of lasers fabricated with estimated design parameters revealing that the index-pattern laser with 0.3 𝝁m slot width delivers the best performance by demonstrating a threshold current of ~30 mA and 𝐒𝐌𝐒𝐑 > 𝟑𝟎 𝐝𝐁.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of a Low Threshold Single-Mode In-P Laser Using Regrowth-Free Fabrication

Sharma,

Landais,

Srivastava

et al. 2024

IEEE Photonics J.

View full text Add to dashboard Cite

show abstract

“…Semiconductor lasers are used in a wide range of applications, such as sensors [1], space laser communications [2], precision measurements [3], pumped solid-state lasers [4], and fiber lasers [5]. There are many types of grating semiconductor lasers, including first-order distributed feedback (DFB) lasers [6,7], first-order distributed Bragg reflector (DBR) lasers [8,9], surface-emitting DFB semiconductor lasers [10,11], surface high-order grating lasers [12,13], and so on. DFB lasers, * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Sensing strategy based on random slot semiconductor laser

Jia¹,

Wang²,

Liu³

et al. 2023

Laser Phys.

View full text Add to dashboard Cite

A photonic sensor based on a random slot surface-emitting semiconductor laser is theoretically demonstrated by utilizing multi-order diffraction. The results show that the variation of far-field local speckles at single wavelength lasing can be utilized to confirm the refractive index of the substances and the flow velocity of erythrocytes in capillaries. The similarity of the intensity contrast is the other protocol to measure the flow velocity of erythrocytes. Additionally, the similarity of the spectral contrast at multiple wavelengths lasing can be used to determine the concentration of erythrocytes in capillaries. The random slot semiconductor laser may provide a new and flexible platform for versatile active sensing.

show abstract

“…S a key component of the optical fiber communication system, a high-speed modulation semiconductor laser with excellent modulation performance is the premise for improving the speed of optical fiber communication [1][2][3][4]. Laser modeling and adjusting design parameters through simulation are the key steps before laser production.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Equivalent Circuit Model Parameters of DFB Lasers With RSM Model and NSGA-II Algorithm

et al. 2022

View full text Add to dashboard Cite

The parameters group of the distributed feedback (DFB) laser equivalent circuit model based on the single-mode rate equations is the key to precisely presenting DFB response characteristics, so a novel optimization solution based on the response surface methodology (RSM) is proposed to rapidly select the optimized parameters by the multi-objective algorithm. The RSM model is designed to match the DFB laser characteristics related to the direct-current and small-signal frequency response, and non-dominated sorting genetic algorithm-II (NSGA-II) attributes to elevating the RSM model optimizing to screen out an optimal set of parameters by Pareto sorting. To further verify the accuracy of the model, the resonant frequency (fr) and the threshold current (Ith) are considered the objective optimization variables to set the target values as 18 GHz and 11.5 mA. The single-objective and multi-objective optimization are analyzed and compared to each other, and the optimized results have shown good agreement with predicted values, such as lower Ith in the multi-objective optimization while close fr in both cases. It has been demonstrated that optimization makes it possible not only to exploit the potential of existing DFB lasers but also to provide guidance for the inverse design of laser.

show abstract

30-Gbps Directly Modulated Semiconductor Lasers Based on Surface High-Order Gratings

Cited by 6 publications

References 27 publications

Design of a Low Threshold Single-Mode In-P Laser Using Regrowth-Free Fabrication

Design of a Low Threshold Single-Mode In-P Laser Using Regrowth-Free Fabrication

Sensing strategy based on random slot semiconductor laser

Optimizing Equivalent Circuit Model Parameters of DFB Lasers With RSM Model and NSGA-II Algorithm

Contact Info

Product

Resources

About