| MRV Products 
 
 
  
 The Fiber DriverT family's Single Fiber modules use unique technologies, 
            which provide the ability to combine transmit (TX) and receive (RX) 
            signals onto a single fiber strand. This effectively doubles the available 
            fiber in a network, and eliminates the need for additional fiber installation. 
            The Fiber Driver Single Fiber modules employ two technologies in order 
            to combine the TX and RX on the single strand:
 
 1. Single wavelength bi-directional for both transmit and receive.
 2. Dual wavelength bi-directional - one wavelength for transmit and 
            the second wavelength for receive.
 
 Employing splitter/combiner technology, single wavelength converters 
            are able to utilize one wavelength for both data transmit and data 
            receive. As these modules use Angled Polished Connectors (APC), the 
            fiber cables must also use APCs. These provide better contact between 
            the fiber and the transceiver minimizing optical reflection.
 
 Dual wavelength converters combine transmit and receive signals onto 
            one fiber strand using two separate wavelengths. This design avoids 
            the budget loss incurred with the use of a splitter/combiner and minimizes 
            optical reflection such that APC fiber connectors are not required.
 
 With dual wavelength converters, the units on each end of a link are 
            different. The first module uses one wavelength to transmit and the 
            other to receive, while the second module reverses that relationship. 
            For this reason dual wavelength units are sold in matching pairs.
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