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High-Speed All-Optical Modulator Based on a Polymer Nanofiber Bragg Grating Printed by Femtosecond Laser
摘要： On-chip optical modulator for high-speed information processing system has been widely investigated by majority of researchers but the connection with the fiber system is a difficulty. The fiber-based optical modulator is a good solution to this problem. Fiber Bragg Grating has good potential to be used as an optical modulator because of its linear temperature response, narrow bandwidth, and compact structure. In this paper, a new fiber-integrated all-optical modulator has been realized based on a polymer nanofiber Bragg grating printed by femtosecond laser. This device exhibits a fast temporal response of 176 ns and a good linear modulation of -45.43 pm/mW. Moreover, its stability has also been studied. This work firstly employs Bragg resonance to realize a fiber-integrated all-optical modulator and paves the way toward realization of multifunctional lab-in-fiber devices.
关键词： polymer fiber,all-optical modulator,fiber Bragg grating,femtosecond laser micromachining,multi-photon polymerization
更新于2025-09-12 10:27:22
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All-optical modulator based on reduced graphene oxide coated D-shaped fiber waveguide
摘要： An all-optical modulator of reduced graphene oxide coated D-shaped fiber structure, utilizing a convenient and controllable evanescent-field-induced deposition method, was designed in this study. By using the pump pulse at 980 nm, the signal light at 1550 nm was modulated with the rate of 50 kHz, and the maximum modulation depth of 8 dB was obtained using this device. Furthermore, this kind of modulator features strong mechanical stability, ease of fabrication, low cost and compatibility with optical fiber systems, which implies great potential in photonics applications such as all-optical switching and all-optical communication.
关键词： D-shaped fiber,photonics applications,all-optical modulator,evanescent-field-induced deposition,reduced graphene oxide
更新于2025-09-12 10:27:22