Absolute Distance Meter Operating on a Free-Running Mode-Locked Laser for Space Mission

Jang, Yu‐Sin; Kim, Wooram; Jang, Heesuk; Kim, Seung-Woo

doi:10.1007/s12541-018-0115-y

Cited by 19 publications

(5 citation statements)

References 27 publications

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“…Our laser has highest repetition rate among C-band tunable mode-locked lasers thus far. Our simple and all-PM structure of a FP laser cavity enables our laser to operate robustly and stably with a high repetition rate, which is necessary for high-precision frequency comb applications [43][44][45][46][47][48][49]. We also examined the performance the proposed laser in both the optical and microwave domain and con rmed that it maintained a soliton mode-locking state with central wavelength tuning from 1533.7 nm to 1565.6 nm, a range covering the full C-band.…”

Section: Discussionmentioning

confidence: 99%

A Wavelength Tunable All Polarization-Maintaining Fiber Mode-Locked Laser At Full C-Band With A High Repetition Rate Of 126 Mhz

Jang

Park

Jin

2022

Preprint

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We report a fully C-band wavelength-tunable mode-locked laser with an all-polarization-maintaining (PM) fiber architecture. A simple and compact laser design based on a fiber Fabry-Perot (FP) cavity enables the production of high-repetition-rate soliton pulses with a semiconductor saturable absorber mirror (SESAM) as a mode locker. Our fully C-band wavelength-tunable mode-locked laser has a repetition rate of 126.5 MHz, which is the highest repetition rate among C-band wavelength-tunable mode-locked lasers to the best of our knowledge. We observed a stable mode-locking state when the central wavelength was tuned from 1533.7 nm to 1565.6 nm. The broadband central wavelength tunability and high repetition rate of the all-PM mode-locked laser as demonstrated here will be compelling source for various applications, including optical communications, broadband spectroscopic LIDAR, and high-precision ranging.

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Section: Discussionmentioning

confidence: 99%

A Wavelength Tunable All Polarization-Maintaining Fiber Mode-Locked Laser At Full C-Band With A High Repetition Rate Of 126 Mhz

Jang

Park

Jin

2022

Preprint

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“…In reverse, the optical time base is transmitted back to the electrical domain via various combbased measurement methods [4][5][6] . As the first absolute distance measurement method based on optical frequency comb, ranging with comb intermode beats (IMBs) has the unique advantages in terms of direct traceability and a simple principle [7][8][9][10][11] . With the phases of IMBs, the distance information is related to the REP and its higher-order harmonics of the frequency comb only.…”

Section: Introductionmentioning

confidence: 99%

“…With the phases of IMBs, the distance information is related to the REP and its higher-order harmonics of the frequency comb only. Since the REP can be detected and stabilized referencing to the time standard directly, ranging with the comb IMBs has attracted wide attention, particularly in space missions [8] .…”

Section: Introductionmentioning

confidence: 99%

Real-time suppression of random phase drift for laser ranging with high-frequency intermode beats

Yang

Sun

et al. 2023

中国光学快报

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Laser ranging with frequency comb intermode beats (IMBs) has been suffering from random phase drifts (RPDs) for two decades. In this study, we reveal the influence of signal transmission path on the RPDs and propose a real-time suppression method using two IMBs of similar frequencies from different combs. As the two IMBs obtain similar RPDs during their transmission through same signal paths, the RPD of the original probing signal IMB is suppressed by deducting the RPD of the newly added local IMB in real time. In our experiments, a real-time suppression of RPDs is achieved using IMBs of 1001 and 1000 MHz. For the sampling time of 100 s, the effect of 19-fold suppression has been achieved. The proposed method provides a new solution for the long-standing phase drift problem in laser ranging with comb IMBs.

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“…Such an intrinsic limitation means that the laser interferometer cannot be widely exploited for newly emerging applications, especially for long distances. As a counterpart to laser displacement interferometry, absolute distance measurements have been proposed and realized by various approaches [6,7], including the time-of-flight method [8,9], amplitude modulation ranging [10][11][12][13][14], frequency modulation ranging [15][16][17], spectral resolved interferometry [18][19][20], multi-wavelength interferometry [21][22][23], dual-comb ranging [24][25][26], and microcomb ranging [27][28][29]. One of these examples is LIDAR (light detection and ranging), which works with the time-offlight method [30].…”

Section: Introductionmentioning

confidence: 99%

Periodic-Error-Free All-Fiber Distance Measurement Method With Photonic Microwave Modulation Toward On-Chip-Based Devices

Jang

Park

Jin

2022

IEEE Trans. Instrum. Meas.

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High-accuracy distance measurements with compact configurations and robust operations are necessary in areas ranging from precision engineering to scientific missions. Here, we report a precise and accurate amplitude-modulationbased all-fiber distance measurement method without periodic errors. To realize an all-fiber configuration towards on-chip devices in the future, certain selective components for easy fabrication on the chip scale were employed. Despite this constraint, sub-100 nm precision was demonstrated with the help of the all-photonic microwave mixing technique introduced in our previous work. In this paper, accuracy as another important factor for measuring distances was investigated to ensure better performance than in previous studies with an optical amplitudemodulation technique. By performing theoretical and experimental analyses of the periodic error while blocking electrical crosstalk signals and optimizing signal processing, accuracy of 2.6 μm (1 σ) was achieved in terms of measurement linearity according to a comparison with a laser displacement interferometer. With the best capabilities of precision and accuracy, the proposed all-fiber distance measurement method is expected to be utilized in diverse long-distance applications, such as large-machine axis tool work and formation flying by multiple satellites. Further, this study demonstrates the possibility of developing an on-chip-based distance-measuring device for the fourth industrial revolution.

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Absolute Distance Meter Operating on a Free-Running Mode-Locked Laser for Space Mission

Cited by 19 publications

References 27 publications

A Wavelength Tunable All Polarization-Maintaining Fiber Mode-Locked Laser At Full C-Band With A High Repetition Rate Of 126 Mhz

A Wavelength Tunable All Polarization-Maintaining Fiber Mode-Locked Laser At Full C-Band With A High Repetition Rate Of 126 Mhz

Real-time suppression of random phase drift for laser ranging with high-frequency intermode beats

Periodic-Error-Free All-Fiber Distance Measurement Method With Photonic Microwave Modulation Toward On-Chip-Based Devices

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