"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Turn-on time delay characteristics of external cavity laser based polymer fiber gratings

HISHAM K. HISHAM1,* , AHMAD F. ABAS2, MOHD A. MAHDI3

Affiliation

  1. Department of Electrical Engineering, College of Engineering, Basra University, Basra 61001, Iraq
  2. Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi Arabia
  3. Department of Computer and Communication Systems Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 Serdang, Malaysia

Abstract

The turn-on time delay (TDelay) characteristics of an external cavity laser-based polymer fiber gratings (PFGs) is successfully investigated. Numerical optimization of model parameters is used to reduce the laser TDelay by analyzing the effects of the laser injection current (Iinj), the temperature (T) variation, the recombination rate R(N) coefficients, and the external OFB level on TDelay. Results show that the effect of R(N) coefficients are to increase the TDelay value and not decrease it as written in the previous studies. Also, results show that the TDelay value is increased when T is increased. However, we can eliminate it either by increasing the value (i.e. ) at a fixed value of Iinj or by increasing the value (i.e. ) at constant Ith. In addition, we can use the external optical feedback (EOF) level as a controller for reducing the TDelay value or to turn-on the laser by controlling the Nth value depending on the EOF level..

Keywords

External cavity laser, Optical fiber, Polymer Bragg grating, Semiconductor laser, Dynamic response.

Submitted at: June 9, 2022
Accepted at: Nov. 24, 2023

Citation

HISHAM K. HISHAM, AHMAD F. ABAS, MOHD A. MAHDI, Turn-on time delay characteristics of external cavity laser based polymer fiber gratings, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 11-12, pp. 527-533 (2023)