Optical Signal Conditioning Modules
The Lightwaves2020 Electro-Optics α tuneable filter is a
optical filter to choose a specified wavelength in a certain range.
The wavelength tuning is achieved by applying a control voltage. The
typical wavelength scanning frequency is >5KHz. This tuneable filter
can be customised to different operating wavelengths and scanning
ranges. In addition to low polarisation dependent loss (PDL)
performance, its thermal stability is exceptional with a TEC package.
The Lightwaves2020’s high-speed Variable Optical Attenuator (VOA)
is based on novel optical material offering fast response in μs, in
contract with conventional LC-based VOA with speed in ms. The dramatic
increase in response speed enables the new VOA suitable for demanding
The Lightwaves2020’s high-speed polarisation controller (PC) is
based on novel optical material offering fast response in μs, in
contrast with conventional polarisation controllers with speeds in ms.
The dramatic increase in response speed makes the new polarisation
controller suitable for demanding 40Gbs PMDC application as well as
polarisation Mux / DeMux. In addition, the new high-speed polarisation
controller is ideal for fibre sensing in optical security,
spectroscopy and polarisation dependent imaging in biomedical
No moving parts
Low excess loss
Easy mounting onto PCB board
SOP and DOP measurement and monitoring
Polarisation tracking and stabilization
Polarisation division multiplexing
Lightwaves2020’s liquid crystal based variable optical attenuator (VOA)
is a voltage-controlled device designed specifically for power
management in optical networks. The device has a dynamic range of up
to 40dB attenuation and wide operating band from 1260 to 1620nm.
Sealed in a compact coaxial package, 7.2mm in diameter, the VOA’s
small footprint makes it ideal for integration onto circuit board. In
addition, it offers the benefits of no moving parts, precision
attenuation control without backlash, small driving voltage, low
insertion loss and low cost. The VOA is driven by either a 0 ~ 40V
peak to peak 10KHz square wave or by a 0 ~ 5 V DC voltage using
Lightwaves2020’s easy-to plug driver board.
The VOA can be used for pre-emphasis of DWDM laser signals in long
haul systems, power equalization in optical add/drop modules and
optical cross-connects, as well as gain-tilt adjustment in EDFA. As
with all Lightwaves2020’s products, this wide-band VOA conforms to
The BM Series VOA is based on a proprietary
micro-electro-mechanical mechanism featuring ultra-high reliability,
compact design, fibre to fibre directly coupling technology, simple
construction, easy drive, and excellent optical performance. The MM
series VOA is fully compliant with the Telcordia 1209 and 1221
reliability standards. The MM series VOA is available in either
normally-transparent or normally-opaque configurations. The VOA is
driven with an electrical current or voltage signal; and the
attenuation can be continuously adjusted with the applied signal.
Replaced by Alpha Tunable Filter (above)
The Lightwaves2020 Electro-Optic Fabry-Perot Tunable Filter (EOFPTF)
is a specialized filter based on the Electro-Optic crystal Fabry-Perot
Etalon technology. The wavelength tuning is achieved by varying the
applied electrical field. The scanning frequency up to 100kHz enables
the use in fast transient test and analysis.
Many spectrum measurement can be made using the EOFPTF and an
oscilloscope. The integrated EOFPTF does not need alignment in
applications. A TEC package is included to have excellent thermal
stability. The polarization-independent feature makes it very stable
and repeatable without the need for a polarization controller in many
The Agiltron reconfigurable Add/Drop Multiplexer (ROADM) is
designed for switching and routing applications in next generation
optical communications networks. Based on a proprietary
micro-integrated-optical breakthrough, Agiltron's ROADMs offer
unprecedented dynamic channel reconfiguration performance of high
speed, low loss, high reliability, ultra compactness, and low cost.
The multi-port ROADM selectively adds and drops any or all of the
wavelength channels from a DWDM multi-channel stream to a set of
designated fibre ports, simultaneously. The module can also be
integrated with EVOAs to individually attenuate optical power at any
wavelength channels. The modules cover C and L bands and handle up to
32 channels at both 50 GHz and 100 GHz spacings.
Agiltron produces optical tunable filters with industrial leading
performance and value. Based on a proprietary technology that utilizes
athermal multi etalon cavities, our tunable filters offer attractive
features of very low loss, unparallel low cost, set-and-hold
operation, wide tuning range, ultrabroad band (visible to LWIR),
minimal drift, and high power handle capability (10W). The platform is
also highly versatile that can be configured into versions of
free-space, detector coupled, fiber coupled with MM, SM, PM types, and
four-port add/drop module.
MEMS Variable Optical Attenuator (VOA)
The MM Series VOA is based on a micro-electro-mechanical mechanism
featuring compact design, simple construction, easy direct drive, and
excellent optical performance. The MM series VOA is compliant with the
Telcordia 1209 and 1221 reliability standards. The MM series VOA is
available in either normally-open or normally-closed configurations
and with an integrated tap option.
These VOAs can be repackaged to be pin and size compatible with
most VOAs on the market. They can also be packaged as an array.
The NSTD Series photonic time delay generates variable time delay
by selectively routes optic signal through 4 fibre segments whose
lengths increase successively by a power of 2 to form a 4 bit digital
delay line. The NSTD allows customer to splice each fibre loops,
creating an increment of ΔT, up to the maximum value T (the total
fibre length). The switching between each loop is achieved using a
patented non-mechanical configuration. All solid-state configuration
eliminates the need for mechanical movement and organic materials. The
device is designed to meet the most demanding switching requirement of
ultra-high reliability and fast response time.