A pixelized variable optical attenuator using liquid crystal on silicon technology for tunable filters
In: Optical review, Jg. 11 (2004), Heft 2, S. 132-139
Online
academicJournal
- print, 15 ref
Zugriff:
We apply liquid crystal on silicon (LCOS) in 0.8-μm standard complementary metal-oxide semiconductor (CMOS) technology to demonstrate a low-cost, high-performance pixelized liquid crystal variable optical attenuator (VOA) with pulse width modulation. We then build a prototype tunable filter by using this VOA along with a grating in the Littrow configuration. With the application of 5-V pulse width modulation, the proposed VOA achieves a 5.6-dB insertion loss, a dynamic range of more than 20 dB, a 50-GHz channel spacing capability, and a polarization-dependent loss (PDL) of less than 0.6 dB at 15-dB attenuation. Our VOA is suitable for applications such as dynamic channel gain equalizers, channel-blocking filters, sub-components of re-configurable add-drop modules, and wavelength selectors.
Titel: |
A pixelized variable optical attenuator using liquid crystal on silicon technology for tunable filters
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Autor/in / Beteiligte Person: | IDE, Masafumi ; SUGURO, Akira ; HOSAKA, Yasushi ; KATSUNUMA, Atsushi ; TAKAHASHI, Kouzou ; SHIRAISHI, Atsushi |
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Zeitschrift: | Optical review, Jg. 11 (2004), Heft 2, S. 132-139 |
Veröffentlichung: | Berlin: Springer, 2004 |
Medientyp: | academicJournal |
Umfang: | print, 15 ref |
ISSN: | 1340-6000 (print) |
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