Article (Scientific journals)
Optical frequency comb based on nonlinear spectral broadening of a phase modulated comb source driven by dual offset locked carriers
Nagarjun, K.P.; Vikram, B. S.; Prakash, Roopa et al.
2020In Optics Letters
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Abstract :
[en] We demonstrate a versatile technique to generate a broadband optical frequency comb source in the C-band. This is accomplished by nonlinear spectral broadening of a phase modulated comb source driven by dual frequency offset locked carriers. The locking is achieved by setting up a heterodyne optical frequency locked loop to lock two phase modulated electro-optic 25 GHz frequency combs sourced from individual seed carriers offset by 100 GHz, to within 6.7 MHz of each other.We realize spectral broadening in highly nonlinear fiber after suitable amplification to obtain an equalized, nonlinearly broadened frequency comb.We obtain ~86 lines in a 20 dB band spanning over 2 THz.
Disciplines :
Physics
Author, co-author :
Nagarjun, K.P.
Vikram, B. S.;  Center for Nanoscience and Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
Prakash, Roopa;  Center for Nanoscience and Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
SINGH, Ajay ;  Center for Nanoscience and Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
Selvaraja, Shankar Kumar;  Center for Nanoscience and Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
Supradeepa, V. R.;  Center for Nanoscience and Engineering, Indian Institute of Science, Bangalore 560012, Karnataka, India
External co-authors :
yes
Language :
English
Title :
Optical frequency comb based on nonlinear spectral broadening of a phase modulated comb source driven by dual offset locked carriers
Publication date :
10 February 2020
Journal title :
Optics Letters
ISSN :
1539-4794
Publisher :
Optical Society of America, United States - New York
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
Available on ORBilu :
since 02 September 2021

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