Terahertz LTX-7225-1310 - 2 Gbps Digital Fiber Transceiver

These Fiber Optic Links Convert up to 16 independent channels of digital information over a fiber optic link to over 10 kilometers with a simplex, singlemode fiber.

The LTX-7225 samples each of the channels up to 100 million times a second, The signals are then multiplexed and transmitted serially over an optical fiber at up to 2 gigabits per second. The far end of the fiber link demultiplexes the signal back into independent outputs. Each of these channels maybe be toggled at rates up to 50 Mb/s.

Using the LTX-7215 in conjunction with a LTX-7225 unit, the result is a remote fiber-coupled 12-bit data acquisition system, digitizing the signal at 50 Mb/s and reconstructs the signal by means of a fast D/A converter. The units may also be employed in the reverse direction if desired.

Applications include data acquisition for plasma physics experiments, signal transmission and control of equipment at high voltage potentials, operations through Faraday shields, and precise noise -free signal transmission in hostile EMI environments.

The LTX-7225 samples the 16 digital inputs presented at the front panel hi density DB-26 connector at a 100 MS/S rate to form a sixteen bit digital word. This word is converted to an 8b/10b code and transmitted as a twenty bit word. This process is repeated at a 100 MHz rate resulting in a 2 Gb/s data stream. This data is converted to an optical bitstream and transmitted via a user-supplied optical fiber to the companion unit.

The companion unit receives the optical bitstream and converts it to a digital signal. It then decodes and de-multiplexes this data. The original 16 bits are latched and presented at the digital output ports.