Inscription of phase-shifted gratings with ultrashort pulses using defocusing and phase-mask shifting

Aviran Halstuch, Amiel A. Ishaaya

نتاج البحث: فصل من :كتاب / تقرير / مؤتمرمنشور من مؤتمرمراجعة النظراء

ملخص

Two slightly shifted wavelength gratings are inscribed one over the other in a single mode fiber by shifting the phase-mask between two positions. The inscription setup includes a NIR femtosecond laser, a phase-mask, a defocusing spherical lens and a cylindrical focusing lens. A first fiber Bragg grating (FBG) is inscribed, while the second overlapping FBG is inscribed only after a slight shift of the phase-mask, enabling a slight wavelength shift. The transmission spectrum of the complex structure is like that of a phase shifted grating, while the inscription process is very fast and simple compared to other standard methods. A high-quality phase shifted grating with two −20 dB transmission dips, a 15 dB transmission peak with a 30 pm transmission bandwidth at 3 dB is achieved. It is also observed that this phase shifted grating structure is birefringent.

اللغة الأصليةإنجليزيّة أمريكيّة
عنوان منشور المضيفMicro-structured and Specialty Optical Fibres VII
المحررونKyriacos Kalli, Alexis Mendez, Pavel Peterka
ناشرSPIE
رقم المعيار الدولي للكتب (الإلكتروني)9781510643802
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 1 يناير 2021
الحدثMicro-structured and Specialty Optical Fibres VII 2021 - Virtual, Online, التشيك
المدة: ١٩ أبريل ٢٠٢١٢٣ أبريل ٢٠٢١

سلسلة المنشورات

الاسمProceedings of SPIE - The International Society for Optical Engineering
مستوى الصوت11773

!!Conference

!!ConferenceMicro-structured and Specialty Optical Fibres VII 2021
الدولة/الإقليمالتشيك
المدينةVirtual, Online
المدة١٩/٠٤/٢١٢٣/٠٤/٢١

All Science Journal Classification (ASJC) codes

  • !!Electronic, Optical and Magnetic Materials
  • !!Condensed Matter Physics
  • !!Computer Science Applications
  • !!Applied Mathematics
  • !!Electrical and Electronic Engineering

بصمة

أدرس بدقة موضوعات البحث “Inscription of phase-shifted gratings with ultrashort pulses using defocusing and phase-mask shifting'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا