Browsing by Author "Hsiao, Fu-Chun"

Now showing 1 - 4 of 4

Microwave behavior of a monolithic dual-wavelength DFB laser based on current model
(2020-09-15)
Huang, Chung-Ping
;
Huang, Yu-Ming
;
Hwang, Yi-Chia
;
Dong, Yao-Zhong
;
Hsu, Shun-Chieh
A driving current based model describing the optical heterodyne output of a monolithic dual-wavelength DFB laser is established. The linear relationship between the driving current and the laser output wavelength was applied to obtain the simple equation for this purpose. Actual measured data from the real devices were used for the initial parameter extraction and the practical model can then be built. By using this model, the influence of different laser parameters towards the radio frequency signal generation and different current configuration on the output characteristic can be demonstrated. This can facilitate the future design of such integrated photonic devices.
Microwave Spectral Characteristics of the Three-Section Distributed Feedback Lasers
(2018-01-01)
Chen, Chun-Hong
;
Hsiao, Fu-Chun
;
Dong, Yao-Zhong
;
Chan, Yueh-Lin
;
Chen, Yi-Hsun
The three-section DFB lasers are used for RF signal generation. With an extra section, it can lime the RF peak frequency farther than the two-section one, and can also simultaneously generate two single-mode RF signals.
The Microwave Signal Linewidth in a Monolithically Integrated Two-Section DFB Laser under Controllable Feedback
(2016)
Dong, Yao-Zhong
;
Hsiao, Fu-Chun
;
Huang, Yi-Chia
;
Lin, Chien-Chung
;
光電系統研究所
A controllable optical feedback system was set up to investigate the linewidth of the RF signals generated by a two-section DFB laser. A very narrow line (its width less than 100 kHz) can be detected when both sections are under the influence of optical feedback.
Widely Tunable Single/Dual RF Signal Generation by a Monolithic Three-Section DFB Laser
(2020-04-17)
Huang, Chung-Ping
;
Huang, Yu-Ming
;
Shih, Hsiang-Yun
;
Hsiao, Fu-Chun
;
Chen, Chun-Hong
A three-section distributed feedback laser with a 2.5 InP/air pair of distributed Bragg reflectors (DBRs) was fabricated and analyzed in terms of its microwave generation capability. A widely tunable single radio frequency (RF) signal can be detected using optical heterodyning, and the tuning range is from 2 to 45 GHz. The incorporation of the third section provides an opportunity to present the dual RF operation when three emission peaks are near to each other in the wavelength domain. The proposed design provides a 21.3% enhancement in the RF tuning range compared with the range of a two-section laser (35.29 GHz versus 42.81 GHz). The compactness of the proposed device can be useful for future radio-over-fiber applications.