Linewidth control in semiconductor optical amplifier based fibre ring lasers

Hazem Awad; Ahmad Atieh; Trevor J. Hall

doi:10.1117/12.707694

8 September 2006 Linewidth control in semiconductor optical amplifier based fibre ring lasers

Hazem Awad, Ahmad Atieh, Trevor J. Hall

Proceedings Volume 6343, Photonics North 2006; 63430Q (2006) https://doi.org/10.1117/12.707694
Event: Photonics North 2006, 2006, Quebec City, Canada

Abstract

A novel SOA based fibre ring laser is presented. An S-band optimized SOA is added to the cavity of a C-band SOA fibre ring laser resulting in significant improvements in the ring laser characteristics. Three main linewidth control parameters are identified: 1) Bias current of C-band SOA, 2) Bias current of S-band SOA, and 3) SOP of lasing light in ring's cavity. Experimental measurements suggest the SOP of the lasing light to be the dominant control parameter for reduction or enhancement of the laser's linewidth. An output power level of 5.27 dBm (corresponding to 10.54 dBm cavity power) and less than 20 kHz FWHM (limited by equipment resolution) and 190 kHz 20-dB linewidth at 1558 nm is demonstrated. The measured 20-dB linewidths displayed stronger variations to changes in the bias currents of the ring lasers compared to variations in the FWHM. This suggests that the optical spectrum of the ring lasers becomes asymmetric at high bias currents and is no longer pure Lorentzian.

Citation Download Citation

Hazem Awad, Ahmad Atieh, and Trevor J. Hall "Linewidth control in semiconductor optical amplifier based fibre ring lasers", Proc. SPIE 6343, Photonics North 2006, 63430Q (8 September 2006); https://doi.org/10.1117/12.707694

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