Wavelength auto-negotiation

摘要

An apparatus includes a bank of optical detectors, an input optical filter and a selector. The optical detectors are configured to output respective detection indications in response to detecting a presence of an optical signal. The input optical filter is configured to receive an input optical signal having an input wavelength, and to route the input optical signal to one of the optical detectors in the bank depending on the input wavelength. The selector is configured to select an output wavelength based on the detection indications of the optical detectors, and to cause generation and transmission of an output optical signal at the selected output wavelength.

主权项

1. Apparatus, comprising:
an input port for receiving a light signal from a remote transmitter; a bank of optical detectors, which are configured to output respective detection indications in response to detecting a presence of an optical signal; an input optical filter, which is configured to receive an input optical signal having an input wavelength, from the remote transmitter, through the input port, and to route the input optical signal to one of the optical detectors in the bank depending on the input wavelength; a selector, which is configured to select an output wavelength based on the detection indications of the optical detectors, and to cause generation and transmission by a laser in the apparatus, of an output optical signal at the selected output wavelength; an output port through which the output optical signal is transmitted to a remote destination; and multiple lasers that are set to multiple respective output wavelengths, wherein the selector is configured to activate, based on the detection indications of the optical detectors, only a selected laser from among the multiple lasers that has the selected output wavelength.