Enhanced Optical Delay Line in Few-Mode Fiber Based on Mode Conversion Using Few-Mode Fiber Bragg Gratings

Zaini, Muhammad Khairol Annuar; Lee, Yen-Sian; Lim, Kok-Sing; Nazal, Nurul Asha Mohd; Yang, Hangzhou; Ahmad, Harith

doi:10.1109/jqe.2018.2865357

Cited by 3 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, the primary approach for generating high-order transverse modes stably within fibers is to integrate mode-selective devices. The devices include options such as few-mode fiber gratings [13][14][15], asymmetric fiber couplers [16][17][18], and misalignment fiber structures [19,20]. The few-mode fiber grating method, however, is constrained by the precision of both the grating and the filter, limiting its capacity to produce only the initial few high-order transverse-mode laser outputs.…”

Section: Introductionmentioning

confidence: 99%

Design of Self-Matching Photonic Lantern for High-Order Transverse-Mode Laser Systems

Zhao,

Li,

Chen

et al. 2024

Photonics

View full text Add to dashboard Cite

High-order transverse-mode lasers have important potential application value in many fields. To address the current issue of the limited controllability of modes in high-order transverse-mode lasers, we have designed a self-matching photonic lantern (SMPL). The SMPL is formed by introducing a few-mode fiber into the input fiber array of the traditional photonic lantern. The parameters of the few-mode fiber match those of the tapered few-mode port of the SMPL; thus, it can transmit high-order modes in a closed loop. The designed SMPL exhibits dual-band multiplexing characteristics at 980/1550 nm, manifesting specifically as high-order mode selectivity excitation at 980 nm and mode preservation at 1550 nm. These characteristics have been validated through simulation and preliminary experiments. The SMPL is designed for constructing all few-mode fiber ring cavity lasers, enabling the pumping of the 980 nm fundamental mode to high-order modes and the transmission of multiple high-order transverse-mode lasers at 1550 nm in a closed loop. The proposed SMPL extends the configuration and functionality of the photonic lantern family, offering a flexible and effective approach to facilitate the generation of multiple high-order transverse-mode lasers. The SMPL combined with fiber laser systems could effectively broaden communication channels and enhance communication bandwidth. It also holds significant value in optical sensing, high-resolution imaging, laser micro-processing, and other fields.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of Self-Matching Photonic Lantern for High-Order Transverse-Mode Laser Systems

Zhao,

Li,

Chen

et al. 2024

Photonics

View full text Add to dashboard Cite

show abstract

Reconfigurable and tunable few-mode fiber-based microwave photonic filter

Wang

Liu

Zhang

et al. 2022

Optical Fiber Technology

View full text Add to dashboard Cite

Experimental investigation of point-by-point off-axis Bragg gratings inscribed by a femtosecond laser in few-mode fibers

2020

View full text Add to dashboard Cite

Off-axis Bragg gratings with varied horizontal and vertical distances off the center in a step-index two-mode fiber were fabricated by 800 nm infrared-femtosecond laser pulses through a point-by-point technique. In this article, we experimentally investigate these gratings via measuring the transmitted power and the reflected intensity profiles under different input polarization, with multiple characteristics reported for the first time to the best of our knowledge. To highlight, we find that the birefringence induced to the LP01 reaches its maximum magnitude at an intermediate offset, followed by the fast and slow axes switching at a further slightly increased offset. We also show that the peak reflectivity of the LP11 exhibits strong polarization dependence, with the much stronger peak reflectivity constantly corresponding to the polarization perpendicular to the damage-point-to-center line, whereas the peak reflectivity of the LP01 has almost no polarization dependence. Moreover, we report that the reflected mode patterns of the cross-coupling of the LP01 and LP11 are linked to the direction of linear polarization, through which one can selectively excite an arbitrarily oriented LP11 by merely altering the polarization.

show abstract

Enhanced Optical Delay Line in Few-Mode Fiber Based on Mode Conversion Using Few-Mode Fiber Bragg Gratings

Cited by 3 publications

References 37 publications

Design of Self-Matching Photonic Lantern for High-Order Transverse-Mode Laser Systems

Design of Self-Matching Photonic Lantern for High-Order Transverse-Mode Laser Systems

Reconfigurable and tunable few-mode fiber-based microwave photonic filter

Experimental investigation of point-by-point off-axis Bragg gratings inscribed by a femtosecond laser in few-mode fibers

Contact Info

Product

Resources

About