Asset Details
Do you wish to reserve the book?
Transverse anti-symmetric phase-shifted fiber grating for reducing linewidth
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Transverse anti-symmetric phase-shifted fiber grating for reducing linewidth
Do you wish to request the book?
Transverse anti-symmetric phase-shifted fiber grating for reducing linewidth
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Transverse anti-symmetric phase-shifted fiber grating for reducing linewidth
2025
Overview
An unprecedented fiber narrow-band filter is proposed, which is composed of a phase-shifted fiber grating with an anti-symmetric refractive index distribution and a uniform fiber grating. The anti-symmetric refractive index distribution is obtained by performing a one-sided exposure on both sides of the few-mode fiber, where the two exposure positions differ by half period of the grating. By introducing an anti-symmetric refractive index distribution, coupling resonance occurs in the LP01 and LP11 modes in the two-mode fiber, and the reflected light and transmitted light are separated into LP11 mode and LP01 mode, respectively. To achieve a narrow-band reflection spectrum, the π phase is introduced into an anti-symmetric refractive index grating, and its transmitted light is reflected through a uniform grating. Single-mode fiber and taper-coupled fiber are introduced to select LP01 mode selection, and the LP11 mode is cutoff. Finally, the laser linewidth characteristics of the proposed structure are analyzed by co-simulation with semiconductor gain chips. Simulation results show that the proposed structure can improve the linewidth of single-longitudinal mode lasers, which has very important potential applications in the fields of Lidar, coherent communication and sensing.
Publisher
Springer Nature B.V
Subject
