Linearization of RoF Optical Source by using Light-injected Gain Modulation

Author

Lee, Sang-Hoon ; Kang, Jeung-Mo ; Won, Yong-Yuk ; Kwon, Hyuk-Choon ; Han, Sang-Kook

Author_Institution

Department of Electrical & Electronic Engineering, Yonsei University, Shinchon-Dong, Seodaemoon-Ku, Seoul 120-749, Korea

fYear

2005

fDate

12-14 Oct. 2005

Firstpage

265

Lastpage

268

Abstract

We presented a novel scheme for linearization of optical source in radio-over-fiber system. The linearization scheme consists of RF attenuator, RF phase shifter, and a different light source for the purpose of reducing the third order intermodulation products (IMD3). We experimentally demonstrated two tone SCM optical links where linearization scheme was applied. With optimizing the phase amount and IMD3 intensity from a different LD source, we obtained optimal condition, which results in reducing carrier to IMD3 ratio of 30dBc.

Keywords

CNR; Distributed-feedback LD (DFB LD); Linearization; gain modulation; intermodulation distortion (IMD); light injection; sub carrier multiplexed (SCM); Nonlinear optics; Optical attenuators; Optical distortion; Optical feedback; Optical fiber communication; Optical filters; Optical modulation; Phase shifters; RF signals; Radio frequency; CNR; Distributed-feedback LD (DFB LD); Linearization; gain modulation; intermodulation distortion (IMD); light injection; sub carrier multiplexed (SCM);

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Photonics, 2005. MWP 2005. International Topical Meeting on

Print_ISBN

89-950043-3-9

Type

conf

DOI

10.1109/MWP.2005.203590

Filename

1590318