scholarly journals Design of Broadband Flat Optical Frequency Comb Based on Cascaded Sign-Alternated Dispersion Tellurite Microstructure Fiber

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1252
Author(s):  
Guocheng Huang ◽  
Meicheng Fu ◽  
Junli Qi ◽  
Jinghan Pan ◽  
Wenjun Yi ◽  
...  
Keyword(s):  
Repetition Rate ◽  
Frequency Comb ◽  
Input Pulse ◽  
Optical Signal ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Spectral Bandwidth ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Microstructure Fiber

We designed a tellurite microstructure fiber (TMF) and proposed a broadband optical frequency comb generation scheme that was based on electro-optical modulation and cascaded sign-alternated dispersion TMF (CSAD-TMF). In addition, the influence of different nonlinear effects, the ultrashort pulse evolution in the CSAD-TMF with the anomalous dispersion (AD) zones and the normal dispersion (ND) zones were analyzed based on the generalized nonlinear Schrodinger equations (GNLSE) modelling. According to the simulations, when the input seed comb had a repetition rate of 20 GHz and had an input pulse peak power of 30 W, the generation scheme could generate optical frequency combs with a 6 dB spectral bandwidth spanning over 170 nm centered at 1550 nm. Furthermore, the generated combs showed good coherence in performance over the whole 6 dB spectral bandwidth. The highly coherent optical frequency combs can be used as high-repetition-rate, multi-wavelength light sources for various integrated microwave photonics and ultrafast optical signal processing applications.

scholarly journals Kerr optical frequency combs: theory, applications and perspectives

Nanophotonics ◽  
2016 ◽  
Vol 5 (2) ◽  
pp. 214-230 ◽  
Author(s):  
Yanne K. Chembo
Keyword(s):  
Continuous Wave ◽  
Frequency Comb ◽  
Kerr Nonlinearity ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs ◽  
Comprehensive Survey ◽  
Microwave Signal Generation ◽  
Mode Locked Lasers

AbstractThe optical frequency comb technology is one of the most important breakthrough in photonics in recent years. This concept has revolutionized the science of ultra-stable lightwave and microwave signal generation. These combs were originally generated using ultrafast mode-locked lasers, but in the past decade, a simple and elegant alternativewas proposed,which consisted in pumping an ultra-high-Q optical resonator with Kerr nonlinearity using a continuous-wave laser. When optimal conditions are met, the intracavity pump photons are redistributed via four-wave mixing to the neighboring cavity modes, thereby creating the so-called Kerr optical frequency comb. Beyond being energy-efficient, conceptually simple, and structurally robust, Kerr comb generators are very compact devices (millimetric down to micrometric size) which can be integrated on a chip. They are, therefore, considered as very promising candidates to replace femtosecond mode-locked lasers for the generation of broadband and coherent optical frequency combs in the spectral domain, or equivalently, narrow optical pulses in the temporal domain. These combs are, moreover, expected to provide breakthroughs in many technological areas, such as integrated photonics, metrology, optical telecommunications, and aerospace engineering. The purpose of this review article is to present a comprehensive survey of the topic of Kerr optical frequency combs.We provide an overview of the main theoretical and experimental results that have been obtained so far. We also highlight the potential of Kerr combs for current or prospective applications, and discuss as well some of the open challenges that are to be met at the fundamental and applied level.

Fiber-based laser frequency combs

2012 ◽  
Vol 60 (4) ◽  
pp. 697-706 ◽  
Author(s):  
G. Soboń ◽  
K.M. Abramski
Keyword(s):  
Laser Physics ◽  
Fiber Lasers ◽  
Frequency Comb ◽  
Laser Frequency ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs

Abstract For the last decade a very attractive field of laser physics, namely the optical frequency comb technique, has been intensively developed. Fiber lasers play particular role in that area. The motivation of their development is obtaining broadband comb systems with well-defined and stable mods (comb teeth). This paper presents a basic overview devoted to the fiber-based optical frequency combs.

scholarly journals The Optimization of Cold Rubidium Atom Two-Photon Transition Excitation with an Erbium-Fiber Optical Frequency Comb

2019 ◽  
Vol 9 (5) ◽  
pp. 921
Author(s):  
Haoyuan Lu ◽  
Jianxiao Leng ◽  
Jianye Zhao
Keyword(s):  
Laser Cooling ◽  
Repetition Rate ◽  
Frequency Comb ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Rubidium Atom ◽  
Two Photon ◽  
Photon Transition ◽  
Fiber Optical ◽  
Fine Tune

We demonstrated the observation of cold rubidium atom two-photon transition excitation by a fiber optical frequency comb. In addition to this, we optimized the repetition rate of optical frequency comb to enhance two-photon intensity by controlling cavity length and pump source of optical comb. This technique can fine tune repetition rate to corresponding stepwise two-photon transition resonance frequency and improve the transition intensity by three times. This method is useful in Doppler laser cooling and detection of macromolecules.

Coherent optical signal processing using optical frequency combs

2012 ◽  
Author(s):  
Peter J. Delfyett ◽  
M. Bagnell ◽  
S. Bhooplapur ◽  
J. Davila-Rodriguez ◽  
N. Hoghooghi ◽  
...  
Keyword(s):  
Signal Processing ◽  
Optical Signal Processing ◽  
Optical Signal ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
Frequency Combs

Development of a Non-Contact Precision Measurement Technique Using Optical Frequency Combs

2012 ◽  
Vol 523-524 ◽  
pp. 877-882 ◽  
Author(s):  
Taro Onoe ◽  
Satoru Takahashi ◽  
Kiyoshi Takamasu ◽  
Hirokazu Matsumoto
Keyword(s):  
High Resolution ◽  
Frequency Comb ◽  
High Sensitivity ◽  
Distance Measurement ◽  
New Method ◽  
Optical Frequency ◽  
Optical Frequency Combs ◽  
High Frequencies ◽  
Frequency Combs ◽  
Lock In

We develop a new method for high-resolution and contactless distance measurement based on self frequency beats of optical frequency combs. We use two optical frequency comb lasers with Rb-stabilized repetition frequencies for doing accurate distance measurement. The repetition frequencies of the optical frequency combs are different, thus parts of the high frequencies such as several gigahertz of self beats are beat-downed to several megahertz without an RF frequency oscillator. The phases of the beat signals of several megahertz frequencies are measured by a lock-in amplifier with a high resolution and high sensitivity. The new method is applied to distance measurement for objects which have rough-surface in the distance range of several-meters.

scholarly journals Cross-Phase Modulation Based Ultra-Flat 90-Line Optical Frequency Comb Generation

2021 ◽  
Author(s):  
Vishal Sharma ◽  
surinder singh ◽  
Lovkesh Bhatia ◽  
Elena A. Anashkina ◽  
Alexey V. Andrianov
Keyword(s):  
Phase Modulation ◽  
Frequency Comb ◽  
Optical Signal ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Cross Phase Modulation ◽  
Central Wavelength ◽  
Highly Nonlinear ◽  
Line Spacing ◽  
Comb Generation

Abstract This paper proposed an approach to design an evenly spaced, 1.8 THz spectrally broad and 1.6 dB flat optical frequency comb (OFC) by exploiting the cross-phase modulation in highly nonlinear fiber. The OFC is realized by controlling the phase of the signals in two parallelly placed highly nonlinear fibers. The frequency and line spacing of the OFC can be tuned by simply varying the periodicity and central wavelength of input electrical and optical signal, respectively.

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