Wideband chaos in hybrid III-V/silicon distributed feedback semiconductor lasers under optical feedback

S. Gomez; K. Schires; A. Gallet; G. Baili; G.-H. Duan; F. Grillot

doi:10.1117/12.2253157

22 February 2017 Wideband chaos in hybrid III-V/silicon distributed feedback semiconductor lasers under optical feedback

S. Gomez, K. Schires, A. Gallet, G. Baili, G.-H. Duan, F. Grillot

Author Affiliations +

Proceedings Volume 10098, Physics and Simulation of Optoelectronic Devices XXV; 100980I (2017) https://doi.org/10.1117/12.2253157
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

The dynamics of hybrid III-V/silicon Distributed Feedback (DFB) semiconductor lasers were studied under a combination of long and short feedback conditions. The allure of silicon photonics lies in the potential for production of low-cost, compact circuits that integrate photonics and microelectronics on a single Photonic Integrated Circuit (PIC)^1,2. It has been recently demonstrated that such tight integration of optical components increases the risk of short-cavity reflections within a PIC that can destabilize the laser³. Using novel III-V/Si DFB lasers, we simulated such reflections by coupling the laser using a cleaved fiber, thus creating a free-space cavity between the laser and the fiber tip. The sensitivity of such devices to this short feedback and its phase was then studied by comparing measurements performed with either a cleaved or a lensed anti-reflection-coated fiber, and revealed the modal and temporal dynamics created by the short-cavity feedback. A long fibered feedback cavity was then created within the experimental setup to study the route to chaos of the devices under long feedback, as well as the impact of the short feedback’s phase on this route. Due to a relatively high relaxation oscillation frequency of 15 GHz and the destabilization of the laser by both the short cavity and the long one; very wide chaos can be achieved when combining both types of feedbacks. This study thus reveals the impact parasitic reflections can have on a DFB laser’s characteristics in a PIC, as well as how these reflections can affect the dynamics of the laser in a well-known optical feedback scheme.

Citation Download Citation

S. Gomez, K. Schires, A. Gallet, G. Baili, G.-H. Duan, and F. Grillot "Wideband chaos in hybrid III-V/silicon distributed feedback semiconductor lasers under optical feedback", Proc. SPIE 10098, Physics and Simulation of Optoelectronic Devices XXV, 100980I (22 February 2017); https://doi.org/10.1117/12.2253157

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