Abstract

We investigate a novel concept of cascaded single side band (SSB) comb generation for improving the carrier-to-noise ratio (CNR), which degrades when the bandwidth of the SSB comb becomes wider. Wavelength-multiplexed seed lasers are simultaneously modulated in a recirculating frequency shifter loop with an SSB modulator, an Er-doped fiber amplifier, and a fiber Bragg grating whose reflective notch filter nature enables seed lasers to be synchronized through the injection locking (IL). A maximum CNR improvement of 11.3 dB is experimentally demonstrated under the IL condition. The proposed technique effectively improves the CNR of wide-bandwidth SSB combs.

© 2021 Optical Society of America

Optical frequency comb generation using cascaded injection of semiconductor lasers

Hsu-Ting Tang and Yu-Han Hung
Opt. Lett. 48(24) 6436-6439 (2023)

Photonic generation of high-performance microwave frequency combs using an optically injected semiconductor laser with dual-loop optoelectronic feedback

Renheng Zhang, Pei Zhou, Kunxi Li, Hualong Bao, and Nianqiang Li
Opt. Lett. 46(18) 4622-4625 (2021)

Wideband and high-resolution spectroscopy based on an ultra-fine electro-optic frequency comb with seed lightwave selection via injection locking

Bingxin Xu, Xinyu Fan, Shuai Wang, and Zuyuan He
Opt. Lett. 46(8) 1876-1879 (2021)

Engineering the spectral bandwidth of quantum cascade laser frequency combs

Maximilian Beiser, Nikola Opačak, Johannes Hillbrand, Gottfried Strasser, and Benedikt Schwarz
Opt. Lett. 46(14) 3416-3419 (2021)

Optical frequency comb generator based on actively mode-locked fiber ring laser using an acousto-optic modulator with injection-seeding

Han Young Ryu, Han Seb Moon, and Ho Suhng Suh
Opt. Express 15(18) 11396-11401 (2007)