Compact linearized optical FM discriminator

Author

Xie, Xiaobo ; Khurgin, Jacob B. ; Kang, Jin U. ; Choa, Fow-Sen

Author_Institution

Johns Hopkins Univ., Baltimore, MD, USA

Volume

14

Issue

3

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

384

Lastpage

386

Abstract

A new type of optical frequency discriminator is proposed and analyzed numerically. The discriminator is based on a linear variation of the reflectivity of an optical reflection grating versus frequency. The proposed chirped grating has a constant /spl kappa/ or index variation and the reflectivity versus optical frequency is tailored by employing a grating with a spatially varying chirp parameter. Integration with a frequency-modulated distributed feedback laser would yield an efficient photonic RF transmitter.

Keywords

chirp modulation; diffraction gratings; distributed feedback lasers; integrated optoelectronics; microwave photonics; optical modulation; optical transmitters; reflectivity; RF signal modulation; chirped grating; compact linearized optical FM discriminator; efficient photonic RF transmitter; frequency-modulated distributed feedback laser; index variation; linear reflectivity variation; microwave photonics; optical carrier; optical frequency discriminator; optical reflection grating; spatially varying chirp parameter; Chirp; Frequency modulation; Gratings; Optical feedback; Optical filters; Optical interferometry; Optical modulation; Optical reflection; Optical transmitters; Reflectivity;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.986821

Filename

986821