Absolute distance measurement by multi-heterodyne interferometry using an electro-optic triple comb

Zhao, Xianyu; Qu, Xinghua; Zhang, Fumin; Zhao, Yuhang; Tang, Guoqing

doi:10.1364/ol.43.000807

Cited by 55 publications

(13 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optical distance measurements can also benefit from this triple comb scheme, as sending a pair of combs onto the target would provide two series of synthetic wavelength chains, allowing a great extension of the ambiguity range 8 without compromising the resolution. Such scheme was recently demonstrated using three electro-optic combs 48 reaching an accuracy of 750 nm over 80 m distance (instead of 15 mm with the dual comb method).…”

Section: Resultsmentioning

confidence: 99%

Spatial multiplexing of soliton microcombs

Lucas¹,

Lihachev²,

Bouchand³

et al. 2018

Nature Photon

118

View full text Add to dashboard Cite

Dual-comb interferometry utilizes two optical frequency combs to map the optical field's spectrum to a radio-frequency signal without using moving parts, allowing improved speed and accuracy. However, the method is compounded by the complexity and demanding stability associated with operating multiple laser frequency combs. To overcome these challenges, we demonstrate simultaneous generation of multiple frequency combs from a single optical microresonator and a single continuous-wave laser. Similar to space-division multiplexing, we generate several dissipative Kerr soliton states -circulating solitonic pulses driven by a continuous-wave laser -in different spatial (or polarization) modes of a MgF 2 microresonator. Up to three distinct combs are produced simultaneously, featuring excellent mutual coherence and substantial repetition rate differences, useful for fast acquisition and efficient rejection of soliton intermodulation products. Dual-comb spectroscopy with amplitude and phase retrieval, as well as optical sampling of a breathing soliton, is realised with the free-running system. Compatibility with photonic-integrated resonators could enable the deployment of dual-and triple-combbased methods to applications where they remained impractical with current technology. IntroductionShortly after the inception of the optical frequency comb 2 , it was realised that combining two combs with slightly different repetition rates on a photodetector produces a radio-frequency (RF) interferogram that samples the optical response 3,4 , without any moving parts. Such dual-comb techniques have been demonstrated in both real-time 5,6 and mid-infrared 7 spectroscopy, distance measurements 8 , two-way time transfer 9 , coherent anti-Stokes Raman spectro-imaging 10 , as well as photonic analogue to digital conversion 11 . However, facing the complexity and cost associated with operating two laser frequency combs, novel methods are being actively explored with a view to reduce the system complexity and inherently improve the mutual coherence. For example, instead of phase locking two independent conventional * tobias.kippenberg@epfl.ch mode-locked lasers, both combs can be generated in the same laser cavity 12 , via repetition rate switching of a single comb 13 , or spectrally broadened in the same fibre in opposite propagation directions 14 . As the noise sources are common mode, the relative coherence between the combs is significantly improved, allowing for longer coherent averaging 4 .Recent advances in the field of high-quality-factor microresonators pumped with a continuous wave (CW) laser have led to the discovery of 'Kerr' frequency combs 15 (also termed 'microcombs') that arise due to nonlinear wave mixing mediated by the optical Kerr effect.One particular state of such combs corresponds to the formation of dissipative Kerr solitons 16 (DKSs) -self-localised pulses of light circulating in the resonators arising from the double balance between loss and parametric gain and between dispersion and nonlinearity 17,18 . The ...

show abstract

Section: Resultsmentioning

confidence: 99%

Spatial multiplexing of soliton microcombs

Lucas¹,

Lihachev²,

Bouchand³

et al. 2018

Nature Photon

118

View full text Add to dashboard Cite

show abstract

“…Similar to triple‐optical‐comb interferometry, the nonambiguity range (NAR) can be easily expanded by slightly changing the repetition frequency, and the updated nonambiguity range can be calculated as

NAR = \frac{NA {normalR}_{1} \cdot NA {normalR}_{2}}{NA {normalR}_{1} - NA {normalR}_{2}} = \frac{c}{f_{rep 1} - f_{rep 2}}

Here NAR 1 and NAR 2 are the nonambiguity ranges of the two acoustic frequency combs, NAR 1 = c / f rep1 , NAR 2 = c / f rep2 , and f rep1 and f rep 2 are the repetition frequencies of the two acoustic frequency combs. Note that, a single set of system can generate multiple (greater than three, see Supporting Information) acoustic frequency combs with flexible adjustment of the comb parameters, including the repetition frequency, the center frequency, and the output power. In addition, the mutual coherence among the multiple combs can be inherently maintained due to the common configuration.…”

Section: Dual‐comb Underwater Distance Measurementmentioning

confidence: 99%

Precise Underwater Distance Measurement by Dual Acoustic Frequency Combs

Qian

Zhang

et al. 2019

Annalen der Physik

View full text Add to dashboard Cite

Underwater acoustics is of fundamental importance for marine science and technology. However, acoustic waves transmitted by state‐of‐the‐art underwater acoustic systems are not inherently phase locked, which hinders the development of underwater acoustic technology. For example, the precision of underwater distance measurement can only achieve centimeter level. As a versatile tool, optical frequency combs have enabled revolutionary progress in optical metrology and precision measurement. In parallel with optical frequency combs, here, the generation of fully stabilized, underwater acoustic frequency combs is reported, in which equidistant acoustic modes are produced via a hydroacoustic transducer. The precision of each individual acoustic mode is measured to be 10−9 at 1 s and 10−12 at 1000 s averaging times. Underwater distance measurements are carried out in an anechoic pool using a dual‐comb scheme. Comparison with reference values shows consistency within 50 µm (7 × 10−6 in relative). The relatively long‐duration experiments at 7 m distance yield an Allan deviation of 1.8 µm (2.6 × 10−7 in relative) at 1 s and further 480 nm (6.8 × 10−8 in relative) at 40 s averaging times. The approach to acoustic frequency comb generation offers a promising and powerful platform for future underwater distance measurement, positioning, and navigation.

show abstract

“…By using the dual-comb-based multi-heterodyne detection technique, temporal and spectral information can be extracted with a high resolution and high update-rate simultaneously. Based on the advantages of dual-comb applications, a third comb has been introduced to expand the measurement range in laser ranging [9]. A basic requirement of this tri-comb laser source for multi-heterodyne detection is the different scale of differences among the repetition rates of the tri-comb.…”

Section: Introductionmentioning

confidence: 99%

A Multidimensional Multiplexing Mode-Locked Laser Based on a Dual-Ring Integrative Structure for Tri-Comb Generation

Yang

Sun

et al. 2020

Applied Sciences

View full text Add to dashboard Cite

The tri-comb-based multi-heterodyne detection technique has been proven to be a powerful tool for precision metrology, e.g., laser ranging and spectroscopy. However, in existing tri-comb generation methods, it is difficult to provide a large and variable difference in tri-comb repetition rates. In this paper; we propose a multidimensional multiplexing mode-locked laser based on a dual-ring integrative structure. Combining the dimensions of sub-ring multiplexing and wavelength multiplexing, two modes of tri-comb generation can be achieved with the dual-ring single cavity laser. The generated combs are identified based on the relative intensity of the pulse trains and optical spectrum, and the repetition rates of dual-combs from the same sub-ring are distinguished based on dispersion analysis. With repetition rates of approximately 47 MHz and 49.6 MHz, the minimum and maximum repetition rate difference of the generated tri-comb can be changed from 2.38 kHz and 2.59526 MHz to 2.74 kHz and 2.59720 MHz merely by switching the operation mode of the dual-ring integrated mode-locked laser. The obtained results indicate that our method can offer a powerful scheme for future multi-comb generation and its application in multi-heterodyne detection-based laser ranging and spectroscopy.

show abstract

Absolute distance measurement by multi-heterodyne interferometry using an electro-optic triple comb

Cited by 55 publications

References 22 publications

Spatial multiplexing of soliton microcombs

Spatial multiplexing of soliton microcombs

Precise Underwater Distance Measurement by Dual Acoustic Frequency Combs

A Multidimensional Multiplexing Mode-Locked Laser Based on a Dual-Ring Integrative Structure for Tri-Comb Generation

Contact Info

Product

Resources

About