Filter And Attenuators by BFi OPTiLAS UK- supplier of fibre optics components,radiofrequency & Microwave devices,and telematic.

Mach-Zehnder Interferometer
Thermo-Optic Switches
VOA Vmux/Vdemux
Passive Components
Value-Added Subsystems

Mach-Zehnder Interferometer

NEL

PLC Mach-Zender interferometer- Planar lightwave circuits (PLCs) are based on silica waveguide technology and underpin the stability and reliability of the high-performance Mach-Zehnder interferometer.

Stable and reliable Mach-Zehnder interferometer based on silica-based planar lightwave circuit. It is suitable solution for the high-speed DPSK/DQPSK transmission systems.
FEATURE

Fast optical frequency tracking by thermo-optic effect
Low PDf (Polarization Dependent Frequency shift)
Stable against mechanical vibration
High reliability

APPLICATION

DPSK/DQPSK demodulation
Time-domain optical pulse multiplexing

Thermo-Optic Switches

NEL

NEL's optical switches employ Mach-Zehnder interferometers with thermo-optic phase shifters as switching units and include an 8x8 optical matrix switch and an 8-arrayed 2x2 optical switch.

These switches are smaller and use less power than mechanical switches or O/E-SW-EO switches. These switches can be driven by +5V TTL-level voltage.
Main Features:

Low Loss
Low Crosstalk
Low Return Loss
Small Size
Excellent Hight Reliability

VOA Vmux/Vdemux

NEL

VMUX and VDMUX consists of PLC based valuable optical attenuator (VOA) and arrayed waveguide grating (AWG).

The VMUX is applicable to point-to-point DWDM network, the add/drop port of wavelength blocker type ROADM node and fixed OADM node.
FEATURE

Reliable PLC based MUX, DMUX and VOA.
Automatic power level control.
Per-channel power monitoring and attenuation control.
Up to 40-channel.
I2C electrical interface.

Passive Components

Sumitomo Electric

You can't build an optical network without passive components for splitting, combining, stabilizing, and filtering wavelengths. SUMITOMO has the passive products you need to build high-performance DWDM, CWDM, OADM, EDFA, and similar modules.

In particular you can find Fiber Bragg Gratings, Long Period Gratings, Edge-Pass Filters.

Value-Added Subsystems

Sumitomo Electric

SUMITOMO combined its expertise in components with packaging know-how and application experience to create subsystem solutions.Such subsystems are suited to the emerging metro and FTTx markets, with economical CWDM, DWDM, and OADM solutions.