US 8,526,826 B2Granted

Repeater and method for operating such a repeater

AssigneeAndrew Corporation

InventorsStefan Eisenwinter, Peter Schmid

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Abstract

A repeater (1) includes a master unit (2) for communicating with a base station of a mobile network, a plurality of remote units (3) for communicating with mobile communications terminals, and a common optical waveguide (4) connecting the remote units (3) with the master unit (2) for transmitting the optical signals from each of the remote units (3) to the master unit (2). The remote units (3) include, as a transmitter for the optical signals, a laser (7) of a construction similar or somewhat identical to that of the other lasers (7). The lasers (7) have similar or somewhat identical nominal wavelengths (λN), and the individual lasers (7) are selected by adjusting their operating temperatures (TD1-TD4) in such a way that each laser transmits on a different transmission wavelength (λü1-λü4).

Claims15

Dependent claims

A repeater comprising:

a master unit for communicating with a base station of a mobile network;
a plurality of remote units for communicating with mobile communications terminals;
an optical waveguide connecting the remote units with the master unit for transmitting the optical signals from each of the remote units to the master unit;
at least two of the remote units including lasers as transmitters for the optical signals;
the plurality of lasers having similar nominal transmission wavelengths that are provided at a plurality of different nominal operating temperatures including a minimum nominal operating temperature and a maximum nominal operating temperature and being selectively controlled by adjusting their operating temperatures so that the lasers transmit on different transmission wavelengths;
a drive unit configured for selectively adjusting the operating temperatures of the lasers to operate in a defined temperature range between a minimum temperature proximate the minimum nominal operating temperature and a maximum temperature proximate the maximum nominal operating temperature to provide a plurality of different transmission wavelengths for the remote units.

3 more elements

Dependencies are inferred from the claim text.