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.

Bulk-micromachined optical filter based on guided-mode resonance in silicon-nitride membrane

2006 ◽  
Vol 24 (4) ◽  
pp. 1922-1928 ◽  
Author(s):  
Che-Lung Hsu ◽  
Yung-Chih Liu ◽  
Chih-Ming Wang ◽  
Mount-Learn Wu ◽  
Ya-Lun Tsai ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Optical Filter ◽  
Silicon Nitride Membrane ◽  
Guided Mode ◽  
Guided Mode Resonance

Line width analysis of a tunable optical filter based on free-space optics

Optik ◽  
2014 ◽  
Vol 125 (21) ◽  
pp. 6488-6490 ◽  
Author(s):  
Bingcheng Mo ◽  
Rui Zhong ◽  
Zhujun Wan
Keyword(s):  
Line Width ◽  
Free Space ◽  
Optical Filter ◽  
Free Space Optics ◽  
Space Optics ◽  
Tunable Optical Filter ◽  
Line Width Analysis

scholarly journals Tunable Optical Filter Based on Mechanically Induced Cascaded Long Period Optical Fiber Grating

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Sunita P. Ugale ◽  
Vivekanand Mishra
Keyword(s):  
Optical Fiber ◽  
Optical Filter ◽  
Single Mode ◽  
Fiber Grating ◽  
Fiber Structure ◽  
Fiber Gratings ◽  
Long Period ◽  
Tunable Optical Filter ◽  
Long Period Fiber Gratings ◽  
Optical Fiber Gratings

We have proposed and demonstrated experimentally a novel and simple tunable optical filter based on mechanically induced and cascaded long period optical fiber gratings. In this filter variable FWHM and center wavelength is provided by cascading long period and ultralong period optical fiber gratings with different periods in a novel fiber structure. We report here for the first time to our knowledge the characterization of mechanically induced long period fiber gratings with periods up to several millimeters in novel multimode-single-mode-multimode fiber structure. We have obtained maximum loss peak of around 20 dB.

scholarly journals Single mode EDF fiber laser using an ultra-narrow bandwidth tunable optical filter

Optik ◽  
2015 ◽  
Vol 126 (2) ◽  
pp. 179-183 ◽  
Author(s):  
N.F. Razak ◽  
H. Ahmad ◽  
M.Z. Zulkifli ◽  
F.D. Muhammad ◽  
Y. Munajat ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Optical Filter ◽  
Single Mode ◽  
Tunable Optical Filter ◽  
Narrow Bandwidth

Three-Dimensional Cross-Coupled Silicon Nitride Racetrack Resonator-Based Tunable Optical Filter

2017 ◽  
Vol 29 (9) ◽  
pp. 771-774 ◽  
Author(s):  
Jijun Feng ◽  
Ryoichi Akimoto ◽  
Qiang Hao ◽  
Heping Zeng
Keyword(s):  
Silicon Nitride ◽  
Optical Filter ◽  
Three Dimensional ◽  
Tunable Optical Filter ◽  
Racetrack Resonator

scholarly journals Multiplexed Weak Waist-Enlarged Fiber Taper Curvature Sensor and Its Rapid Inline Fabrication

Sensors ◽  
2021 ◽  
Vol 21 (20) ◽  
pp. 6782
Author(s):  
Duo Yi ◽  
Lina Wang ◽  
Youfu Geng ◽  
Yu Du ◽  
Xuejin Li ◽  
...  
Keyword(s):  
Insertion Loss ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Fabrication Method ◽  
Curvature Sensing ◽  
Fiber Taper ◽  
Rapid Fabrication ◽  
Vector Curvature ◽  
Curvature Sensor

This study proposes a multiplexed weak waist-enlarged fiber taper (WWFT) curvature sensor and its rapid fabrication method. Compared with other types of fiber taper, the proposed WWFT has no difference in appearance with the single mode fiber and has ultralow insertion loss. The fabrication of WWFT also does not need the repeated cleaving and splicing process, and thereby could be rapidly embedded into the inline sensing fiber without splicing point, which greatly enhances the sensor solidity. Owing to the ultralow insertion loss (as low as 0.15 dB), the WWFT-based interferometer is further used for multiplexed curvature sensing. The results show that the different curvatures can be individually detected by the multiplexed interferometers. Furthermore, it also shows that diverse responses for the curvature changes exist in two orthogonal directions, and the corresponding sensitivities are determined to be 79.1°/m−1 and –48.0°/m−1 respectively. This feature can be potentially applied for vector curvature sensing.

Resin Made Long-Period Fiber Grating Structure for Tunable Optical Filter inside Single-Mode Fiber

2020 ◽  
Vol 861 ◽  
pp. 259-263
Author(s):  
Ravivudh Khun-In ◽  
Yuji Usuda ◽  
Yuttapong Jiraraksopakun ◽  
Apichai Bhatranand ◽  
Hideki Yokoi
Keyword(s):  
Optical Filter ◽  
Single Mode ◽  
Grating Period ◽  
Single Mode Fiber ◽  
Fiber Axis ◽  
Wavelength Shift ◽  
Fiber Grating ◽  
Long Period Fiber Grating ◽  
Long Period ◽  
Period Fiber Grating

The rectangular-structured resin with one of its triangular long-period fiber grating surface is designed and printed out by using a high resolution 3D printer, so called long-period fiber grating (LPFG) resin. This LPFG resin is directly pressed on the bare single-mode fiber by a digital force meter to filter out partial band of light inside the fiber. The grating period is expanded by tilting the resin from the initial fiber axis. The optical filter is observed as resonant wavelengths from the broadband wavelength. The results show that the resonant wavelength shift is a linear function of the grating period with the coefficient of determination over 0.99. The proposed scheme has a great potential to be employed as a sensor such as a selective optical filter and a buried intrusion sensor.

Optimization of Scattering Parameters through Numerical Investigation of One-bit RF MEMS Switch over Ku, K and Ka Band

2020 ◽  
Vol 12 ◽  
Author(s):  
Pampa Debnath ◽  
Ujjwal Mondal ◽  
Arpan Deyasi
Keyword(s):  
Transmission Line ◽  
Numerical Investigation ◽  
Line Width ◽  
Insertion Loss ◽  
Return Loss ◽  
Rf Mems ◽  
Rf Mems Switch ◽  
Ka Band ◽  
Mems Switch ◽  
Overlap Area

Aim:: Computation of loss factors for one-bit RF MEMS switch over Ku, K and Ka-band for two different insulating substrates. Objective:: Numerical investigation of return loss, insertion loss, isolation loss are computed under both actuated and unactuated states for two different insulating substrates of the 1-bit RF MEMS switch, and corresponding up and down-capacitances are obtained. Methods:: The unique characteristics of a 1-bit RF MEMS switch of providing higher return loss under both actuated and unactuated states and also of isolation loss with negligible insertion loss makes it as a prime candidate for phase shifter application. This is presented in this manuscript with a keen focus on improvement capability by changing transmission line width, and also of overlap area; where dielectric constant of the substrate also plays a vital role. Results:: The present work exhibits very low down-capacitance over the spectrum whereas considerable amount of up-capacitance. Also when overall performance in terms of all loss parameters are considered, switch provides very low insertion loss, good return loss under actuated state and standard isolation loss. Conclusion:: Reduction of transmission line width of about 33% improved the performance of the switch by increasing isolation loss. Isolation loss of -40 dB is obtained at actuated condition in higher microwave spectra for SiO 2 at higher overlap area. Down capacitance of ~ 1dB is obtained which is novel as compared with other published literature. Moreover, a better combination of both return loss, isolation loss and insertion loss are reported in this present work compared with all other published data so far.

Sign in / Sign up

Export Citation Format

Share Document