Author(s): Xu, CD (Xu, Changda); Du, XH (Du, Xinhao); Jin, Y (Jin, Ya); Chen, W (Chen, Wei); Zhu, NH (Zhu, Ninghua)

Source: IEEE PHOTONICS JOURNAL Volume: 14 Issue: 4 Article Number: 1538008 DOI: 10.1109/JPHOT.2022.3185456 Published: AUG 2022

Abstract: Recently, external-cavity tunable lasers (ECTLs) have been widely used in WDM systems for their excellent characteristics, such as high side-mode suppression ratio (SMSR), low relative intensity noise (RIN) and narrow line width. In this paper, we propose an analytical model for external-cavity lasers using tunable etalons and elaborate on the selection of key parameters in the design scheme, which is rarely discussed in detail in previous researches. By numerically solving the model based on the rate equation and the transmission matrix, we analyzed the effects of different end-facet reflectivity on the SMSR, PI curves, electron and photon concentration distributions. In addition, By choosing appropriate physical parameters, we theoretically demonstrate an ECTL with a single wavelength tuning range of 1570.5-1603.6 nm (186.95-190.9 THz), and a power efficiency of 0.673 W/A, as well as an SMSR exceeds 50 dB.

Accession Number: WOS:000838406900006

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Xu, Changda                  0000-0002-5869-9147

ISSN: 1943-0655

eISSN: 1943-0647

Full Text: https://ieeexplore.ieee.org/document/9803021