New Products To Maximise Data Capacity
|
|
BBN International announces new solutions for increasing data capacity
on optical fibre transmission systems. Using phase shift modulation to
improve signal quality and performance for high data rate systems,
differential quadrature phase modulation to double the data rate for a
given transmission speed and optical interleaving to double channel
counts in DWDM systems, existing and new optical links can be used for
far greater data rates. |
|
|
|
For phase modulated optical communication systems, the delay line
interferometer converts phase modulation to amplitude modulation.
For 2.5, 10, 20 or 40Gbps commercial DPSK signal reception. |
 |
 |
-
Athermal design
-
C+L band coverage in a single device
-
Low temperature-dependent frequency shift
-
Low polarisation-dependent frequency shift
-
Low insertion and polarisation dependent loss
-
High power handling
-
Passive (colourless locked to ITU grid) or tuneable
(to track laser frequency)
-
Telcordia GR-1221 qualified
|
|
Converts differential quadrature phase modulation to amplitude
modulation to double the data rate for any given transmission rate.
This enables 40Gbps over a 20Gbps 50GHz channel spacing system. |
 |
 |
-
Athermal design
-
C+L-band coverage by a single device
-
Low temperature-dependent frequency shift (TDFS)
-
Low polarization-dependent frequency shift (PDFS)
-
Fully and semi-tunable versions are available with
independent I- and Q-arm control
-
Wide bandwidth
-
Low insertion loss & PDL
-
High power handling
-
Telcordia GR-1221 qualified
|
|
This free-space micro-optics device demodulates coherent signals in
either homodyne or heterodyne detection.
- Purely passive
- Compact size
- Based on bulk optics design
- DPSK modulation is a prerequisite for adapting coherent
detection
|
|
 |
|
This polarisation diversified optical hybrid mixes an incoming
signal with a local oscillator. |
 |
|
 |
- Purely passive
- Compact size
- Based on bulk optics design
- Athermal
- Colourless
- Data rate independent
|
|
Using a step-phase interferometer DWDM channels are combined to
double the capacity.
The current standard optical interleaver product family supports
100-200, 50-100, 25-50, and 12.5-25 GHz channel spacing, covering up
to 90, 180, 360, and 720 channels, respectively, as well as other
custom spacings in that range, such as 33.33-66.66 GHz.
Dual stage and asymmetric interleavers are also available. |
 |
|
De-Interleaver
Interleaver
 |
- Wide and flat passband
- Minimal PDL
- High channel isolation
- Minimal thermal drift
- Low and customizable dispersion
- Low insertion loss & IL uniformity
- Dual C- and L-band coverage
- Demux/Mux copackaged solution available
- Asymmetric/uneven optical interleaver
available
- Telcordia GR-1221/63 qualified
|
|
See more on our website here:
http://www.bbnint.co.uk/passive_devices/demodulators.asp |
