A 1-μm-Band Injection-Locked Semiconductor Laser with a High Side-Mode Suppression Ratio and Narrow Linewidth

Chen, Jiaqi; Chen, Chao; Guo, Qi; Qin, Li; Zhang, Jianwei; Peng, Hang-Yu; Zhou, Yin-Li; Sun, Jing-Jing; Wu, Hao; Yu, Yong‐Sen; Ning, Yongqiang; Wang, Lijun

doi:10.3390/s22239239

Cited by 4 publications

(3 citation statements)

References 35 publications

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“…The optical coherent reception method based on a 120° interferometer utilizes the principle of phase reconstruction to characterize phase/frequency noise [ 79 , 80 , 81 ]. The tested laser passes through a phase difference interferometer system with a 3 × 3 coupler to measure the differential phase information, as shown in Figure 5 d. The measured laser is adjusted for power through a variable optical attenuator and is divided into two parts by a ring-shaped device.…”

Section: Basic Principlesmentioning

confidence: 99%

Linewidth Measurement of a Narrow-Linewidth Laser: Principles, Methods, and Systems

Chen,

Sun

et al. 2024

Sensors

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Narrow-linewidth lasers mainly depend on the development of advanced laser linewidth measurement methods for related technological progress as key devices in satellite laser communications, precision measurements, ultra-high-speed optical communications, and other fields. This manuscript provides a theoretical analysis of linewidth characterization methods based on the beat frequency power spectrum and laser phase noise calculations, and elaborates on existing research of measurement technologies. In addition, to address the technical challenges of complex measurement systems that commonly rely on long optical fibers and significant phase noise jitter in the existing research, a short-delay self-heterodyne method based on coherent envelope spectrum demodulation was discussed in depth to reduce the phase jitter caused by 1/f noise. We assessed the performance parameters and testing conditions of different lasers, as well as the corresponding linewidth characterization methods, and analyzed the measurement accuracy and error sources of various methods.

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Section: Basic Principlesmentioning

confidence: 99%

Linewidth Measurement of a Narrow-Linewidth Laser: Principles, Methods, and Systems

Chen,

Sun

et al. 2024

Sensors

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“…To better understand this issue, our purpose is to design a side-mode suppressed multi-coupled microrings laser experimentally to eliminate all the side, bonding, and anti-bonding modes according to the Vernier effect and yield an extremely sharp single-mode lasing with high side-mode suppression ratio (SMSR) output [22][23][24][25][26]. We demonstrate that the side-mode suppression ability of coupled microring lasers can be improved by adding one more coupling size mismatched microring to form the cavity.…”

Section: Introductionmentioning

confidence: 99%

High Side-Mode Suppression Ratio with a Vernier effect Single-mode Laser Using Triple Coupled Microrings

Jahangiri

Moradiani

Parsanasab

et al. 2023

Preprint

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The development of single-mode lasers with a high side-mode suppression ratio (SMSR) is challenging but highly desirable for integrated photonics devices and long-distance communications due to its high spectral purity and stability. Here, we demonstrate a single-mode laser with a high side-mode suppression ratio based on size-mismatched triple coupled microrings. With the exact engineering of several key parameters of the structure like air gap and radii of microrings for controlling the free spectral range (FSR), a predominant mode is selected to lase in amplified spontaneous emission (ASE) of the gain material and all side and high order modes are suppressed by Vernier effect. In this work, we show that a single-mode operation is efficiently generated with an improved side-mode suppression ratio of over 20 dB in a three-ring-coupled microcavity laser. The single frequency output persists for a wide power range. The theoretical calculations and numerical simulations’ results confirm the validity of the experimental results. Our structural engineering creates new opportunities in a variety of frontier applications in single-mode lasers and high quality sensors.

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“…To better understand this issue, our purpose is to design a side-mode suppressed multi-coupled microrings laser experimentally to eliminate all the side, bonding, and anti-bonding modes according to the Vernier effect and yield an extremely sharp single-mode lasing with high side-mode suppression ratio (SMSR) output 22 – 26 . We demonstrate that the side-mode suppression ability of coupled microring lasers can be improved by adding one more coupling size mismatched microring to form the cavity.…”

Section: Introductionmentioning

confidence: 99%

High side-mode suppression ratio with a Vernier effect single-mode laser using triple coupled microrings

Jahangiri

Moradiani

Parsanasab

et al. 2023

Sci Rep

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The development of single-mode lasers with a high side-mode suppression ratio (SMSR) is challenging but highly desirable for integrated photonics devices and long-distance communications due to their high spectral purity and stability. Here, we demonstrate a single-mode laser with a high side-mode suppression ratio based on size-mismatched triple-coupled microrings. With the exact engineering of several key parameters of the structure like air gap and radii of microrings for controlling the free spectral range (FSR), a predominant mode is selected to lase in amplified spontaneous emission (ASE) of the gain material and all side and high order modes are suppressed by Vernier effect. In this work, we show that a single-mode operation is efficiently generated with an improved side-mode suppression ratio of over 20 dB in a three-ring-coupled microcavity laser. The single-frequency output persists for a wide power range. The theoretical calculations and numerical simulations’ results confirm the validity of the experimental results. Our structural engineering creates new opportunities in a variety of frontier applications in single-mode lasers and high-quality sensors.

show abstract

A 1-μm-Band Injection-Locked Semiconductor Laser with a High Side-Mode Suppression Ratio and Narrow Linewidth

Cited by 4 publications

References 35 publications

Linewidth Measurement of a Narrow-Linewidth Laser: Principles, Methods, and Systems

Linewidth Measurement of a Narrow-Linewidth Laser: Principles, Methods, and Systems

High Side-Mode Suppression Ratio with a Vernier effect Single-mode Laser Using Triple Coupled Microrings

High side-mode suppression ratio with a Vernier effect single-mode laser using triple coupled microrings

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