An electro-optically tunable optical filter with an ultra-large-wavelength tuning range

2006 ◽  
Author(s):  
Rohit Samarth ◽  
Miao Li ◽  
Xuejun Lu
Keyword(s):  
Tuning Range ◽  
Optical Filter ◽  
Wavelength Tuning ◽  
Tunable Optical Filter ◽  
Large Wavelength

One-wavelength tuning method for a tunable optical filter based on a cascaded polarization interference filter

2004 ◽  
Vol 43 (15) ◽  
pp. 3145
Author(s):  
Zong-fu Hu ◽  
Cheng-wu An ◽  
Ming-hui Hong ◽  
Yong-fong Lu ◽  
Chong-tow Chong
Keyword(s):  
Optical Filter ◽  
Interference Filter ◽  
Wavelength Tuning ◽  
Tuning Method ◽  
Tunable Optical Filter

Use Piezoelectric Bimorph for the Fiber Bragg Grating Tuner

2010 ◽  
Vol 143-144 ◽  
pp. 196-200
Author(s):  
Xiao Li Zhang ◽  
Da Kai Liang ◽  
Jie Zeng
Keyword(s):  
Fiber Bragg Grating ◽  
Tuning Range ◽  
High Efficiency ◽  
Optical Filter ◽  
Bragg Grating ◽  
Operating Voltage ◽  
Piezoelectric Bimorph ◽  
Central Wavelength ◽  
Tunable Optical Filter ◽  
Before And After

A wavelength tunable optical filter based on a fiber Bragg grating using piezoelectric bimorph is realized in this paper, and the tuning condition is theoretically and experimentally analyzed. The Bragg central wavelength of the filter can be easily tuned adopting to a DC voltage. The maximum strain of the central wavelength depends upon the maximum operating voltage, and the tuning range efficiency was as high as 1.2pm/V, the reflectivity, shape and the reflective spectrums of the fiber Bragg grating central wavelength almost keep unchanged before and after tunning. This paper provides a reference for optical fiber Bragg grating tuner.with high efficiency.

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.

Electrically tunable optical filter for infrared wavelength using liquid crystals in a Fabry–Perot étalon

1990 ◽  
Vol 57 (17) ◽  
pp. 1718-1720 ◽  
Author(s):  
J. S. Patel ◽  
M. A. Saifi ◽  
D. W. Berreman ◽  
Chinlon Lin ◽  
N. Andreadakis ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Optical Filter ◽  
Infrared Wavelength ◽  
Tunable Optical Filter ◽  
Fabry Perot
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