Study on Birefringence Effect Of Single-Mode Fiber on Output Spectra of High-Order Fiber Comb Filter Based on Polarization-Diversity Loop Configuration

2012 ◽  
Vol 26 (6) ◽  
pp. 8-15 ◽  
Author(s):  
Young-Ho Kim ◽  
Yong-Wook Lee
Keyword(s):  
Single Mode ◽  
Single Mode Fiber ◽  
High Order ◽  
Comb Filter ◽  
Polarization Diversity ◽  
Birefringence Effect

Switchable and tunable linear cavity erbium-doped fiber laser based on FBGs embedded in Sagnac rings

Laser Physics ◽  
2021 ◽  
Vol 32 (1) ◽  
pp. 015101
Author(s):  
Gangxiao Yan ◽  
Weihua Zhang ◽  
Peng Li ◽  
Qiuhao Jiang ◽  
Meng Wu ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Low Cost ◽  
Single Mode ◽  
Optical Signal ◽  
Single Mode Fiber ◽  
Hole Burning ◽  
Linear Cavity ◽  
Erbium Doped ◽  
Optical Fiber Sensing ◽  
Birefringence Effect

Abstract A switchable and tunable erbium-doped fiber laser with a linear cavity based on fiber Bragg gratings embedded in Sagnac rings is proposed and experimentally verified. Due to the stress birefringence effect and the polarized hole burning effect, which are introduced into the single-mode fiber in the polarization controllers (PCs) by the PCs, the designed laser can achieve seven kinds of laser-states output including three kinds of single-wavelength laser states, three kinds of dual-wavelength laser states and one kind of triple-wavelength laser state. The optical signal-to-noise ratios of the output wavelengths are all higher than 52 dB, and the wavelength shifts are all less than 0.04 nm. Furthermore, the temperature tuning of the wavelength range is also researched, which is about 1.2 nm. Due to advantages, such as low cost, simple structure, easy switching and multiple laser states, the designed laser has great application potential in laser radar, optical fiber sensing and so on.

Excitation of High-Order Optical Vortex Modes by Tilting Tapered and Lensed Single Mode Fiber

2019 ◽  
Vol 46 (9) ◽  
pp. 0906001
Author(s):  
宋巍 Wei Song ◽  
刘奂奂 Huanhuan Liu ◽  
庞拂飞 Fufei Pang ◽  
杨俊锋 Junfeng Yang ◽  
张春香 Chunxiang Zhang ◽  
...  
Keyword(s):  
Single Mode ◽  
Optical Vortex ◽  
Single Mode Fiber ◽  
High Order

Miniature Single-Mode Fiber Refractive Index Interferometer Sensor Based on High Order Cladding Mode and Core-Offset

2012 ◽  
Vol 24 (5) ◽  
pp. 359-361 ◽  
Author(s):  
Wei Chang Wong ◽  
Chi Chiu Chan ◽  
Yi Fan Zhang ◽  
Kam Chew Leong
Keyword(s):  
Refractive Index ◽  
Single Mode ◽  
Single Mode Fiber ◽  
High Order ◽  
Cladding Mode

Performance and Reliability of a MEMS-based tunable optical filter operating in the 1565 nm-1525 nm wavelength range

2002 ◽  
Vol 722 ◽  
Author(s):  
T. S. Sriram ◽  
B. Strauss ◽  
S. Pappas ◽  
A. Baliga ◽  
A. Jean ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Line Width ◽  
Insertion Loss ◽  
Optical Filter ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Reliability Testing ◽  
Silicon Nitride Membrane ◽  
Tunable Optical Filter ◽  
Extensive Performance

AbstractThis paper describes the results of extensive performance and reliability characterization of a silicon-based surface micro-machined tunable optical filter. The device comprises a high-finesse Fabry-Perot etalon with one flat and one curved dielectric mirror. The curved mirror is mounted on an electrostatically actuated silicon nitride membrane tethered to the substrate using silicon nitride posts. A voltage applied to the membrane allows the device to be tuned by adjusting the length of the cavity. The device is coupled optically to an input and an output single mode fiber inside a hermetic package. Extensive performance characterization (over operating temperature range) was performed on the packaged device. Parameters characterized included tuning characteristics, insertion loss, filter line-width and side mode suppression ratio. Reliability testing was performed by subjecting the MEMS structure to a very large number of actuations at an elevated temperature both inside the package and on a test board. The MEMS structure was found to be extremely robust, running trillions of actuations without failures. Package level reliability testing conforming to Telcordia standards indicated that key device parameters including insertion loss, filter line-width and tuning characteristics did not change measurably over the duration of the test.

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