RF & Optical Signal Management

In addition to fiberoptic signal transport, other signal management functions are available to realize various system architectures and optimizations. These include the following.

  • Optical Fiber Matrix Switching
  • RF & Optical Signal Amplification
  • RF & Optical A/B Protection/Redundancy Switching
  • Optical CWDM & DWDM Multiplexing
  • DWDM Add/Drop Multiplexing
  • RF & Optical Signal Splitting

Pure physical layer all Optical Fiber Matrix Switching is signal format independent, making it possible to switch 10 MHz timing reference clocks and 40 GHz Ka-band microwave links within the same switch assembly as latching triggers and 100 Gbps high speed data trunks. Optical switching matrices support the capability of switching bi-directional signals, switching of dark fiber for pre-provisioning, and fast switching for M:N protection architectures. Matrices are scalable from 4 x 4 to 192 x 192, and maintain a competitive per port cost. Switches are NEBS 3+ Certified and rate 13+ (on a scale of 1 to 10) against Verizon’s TEEER requirement. Typical optical switch insertion loss of 0.9 dB (1.8 dB max.) makes the switch, not only a low impact element in system link budgets, it also makes possible architectures that require multiple series paths through the switch. 1310 nm, 1550 nm, CWDM, and DWDM optics are passed transparently through the switch. The ultra-low optical crosstalk of the free space switching technology meets the most stringent government requirements for certification in multi-level security applications. Protocol flexibility allows government agencies to use switches in any optical networking environment – including those that require the most stringent security and encryption implementations (including support for NSA Class 1 encryption devices).

RF and optical signal amplification are available in the Optiva platform. RF signals up to 22 GHz may be amplified from 15 dB to 35 dB. Optiva EDFAs amplify 1550 nm and DWDM optical signals to +23 dBm. EDFA saturated output power levels up to +35 dBm are available as 19” rack mount assemblies.

RF and optical A/B sensing redundancy switching is available for protection of single communication links. Switches sense input RF or optical levels on primary and secondary inputs. If signal levels fall below an adjustable threshold on the primary input, the link is switched to the secondary input.

CWDM and DWDM optics are available for RF, microwave, CATV, and baseband digital video/audio/data transport. Multiplexing multiple wavelengths onto a single fiber is an effective means of increasing signal throughput of fiber in architectures where the number of fibers is limited. Optiva cards are available for multiplexing and demultiplexing up to 8 CWDM wavelengths and up to 16 DWDM wavelengths. 19” 1RU enclosures are available that can mux/demux up to 32 DWDM wavelengths.

Add/Drop Multiplexers support 18 DWDM wavelengths in ring and other architectures that require nodes to add and/or drop a particular DWDM wavelength.

Passive RF and Optical Splitters are available to split signal paths up to 32 ways. Active 1RU and 2RU optical amplifiers (EDFAs) are available for splitting amplified optical signals up to 32 ways.