Power efficient ultraflat optical frequency comb generation by cascading modulators

Xu Xiao; Kan Wu; Siqi Liu; Jianping Chen

doi:10.1117/1.OE.56.10.106115

27 October 2017 Power efficient ultraflat optical frequency comb generation by cascading modulators

Xu Xiao, Kan Wu, Siqi Liu, Jianping Chen

Author Affiliations +

Optical Engineering, Vol. 56, Issue 10, 106115 (October 2017). https://doi.org/10.1117/1.OE.56.10.106115

Abstract

A power efficient optical frequency comb (OFC) is highly desired for applications with limited power supply, e.g., microwave photonics applications in moving vehicles. An ultraflat OFC generation is demonstrated with 0.19-dB flatness, 15 comb lines, and 18.3-dBm total RF power consumption. The scheme is based on spectral convolution. A five-line comb with 0.06-dB flatness and 4.0-GHz spacing is first generated in an intensity modulator. Then the signal is injected to a phase-modulator driven by ×5 frequency of 20.0 GHz to obtain the ultraflat 15-line comb with 0.19-dB flatness. The comb spacing is adjustable by controlling the input frequency of microwave source within the bandwidth of phase-modulation. Our work demonstrates a power efficient approach to obtain ultraflat comb and may benefit microwave photonics applications requiring low-power consumption.

Citation Download Citation

Xu Xiao, Kan Wu, Siqi Liu, and Jianping Chen "Power efficient ultraflat optical frequency comb generation by cascading modulators," Optical Engineering 56(10), 106115 (27 October 2017). https://doi.org/10.1117/1.OE.56.10.106115

Received: 26 July 2017; Accepted: 4 October 2017; Published: 27 October 2017

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available