ETRI-Knowledge Sharing Plaform

KOREAN
논문 검색
Type SCI
Year ~ Keyword

Detail

Journal Article Simple Detuning Method for Low-Chirp Operation in Polymer-Based Tunable External-Cavity Lasers
Cited 2 time in scopus Download 10 time Share share facebook twitter linkedin kakaostory
Authors
Byung-Seok Choi, Jong Sool Jeong, Hak-Kyu Lee, Yun C. Chung
Issue Date
2015-11
Citation
Optics Express, v.23, no.24, pp.30657-30666
ISSN
1094-4087
Publisher
Optical Society of America(OSA)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1364/OE.23.030657
Project Code
15MB1200, Development of key technologies for flexible optical node based on software-defined network(SDN), Kwon Yong-Hwan
Abstract
We propose and demonstrate a simple detuning method for the low-chirp operation of a polymer-based tunable external-cavity laser (ECL). To ensure the low-chirp operation of this directly-modulated ECL, we first obtain the optimum values of the heater current applied to the polymer Bragg grating reflector (PBR) and the operating temperature of this ECL. For this purpose, we sweep the current applied to the phase control heater until the peak output power measured from the high-reflection (HR) coated facet reaches the minimum value. We then operate this ECL with minimum chirp by tuning the lasing mode to the longer wavelength limit of the stable operation region. This is because the detuned loading effect is maximized at this limit as the in-phase condition between the lights reflected from the PBR and anti-reflection (AR) coated facet of the gain medium is satisfied. Thus, by using this method together with conventional wavelength-locking algorithm, we can operate this ECL with minimum chirp at any wavelength.
KSP Keywords
Anti-Reflection, Bragg grating(FBG), External cavity laser, Gain medium, In-phase, Loading effect, Operation Region, Output power, Phase control, Stable operation, operating temperature
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
CC BY