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AssigneeNEC Laboratories America, Inc.
InventorsJianjun Yu, Lei Xu, Philip Ji, Ting Wang
Estimating the term…
A method of generating a dark-RZ pulse in an optical communications system with a dual-arm modulator by setting a direct current bias on the modulator to a specific value such that an output optical power from the modulator achieves a maximum value when the RF signals on the first and second arms of the modulator are off and maintaining the direct current bias at the specific value and applying RF signals to the first and second arms of the modulator and delaying one of the RF signals applied to one of the first and second arms relative to the other of the RF signals such that a dark-RZ pulse is generated with a duty cycle based on the delay. Another aspect of the invention provides a method for generating dense wave division multiplexing (DWDM) optical mm-waves in an optical transmission system by phase modulated DWDM optical signal and applying the phase modulated DWDM optical signal to an input port of an optical interleaver, the optical interleaver having a specified bandwidth to suppress the optical carriers and convert the DWDM optical signal to DWDM optical mm-waves; and amplifying the DWDM optical mm-waves and transmitting the DWDM optical mm-waves over single mode fiber (SMF).
A method of generating a dark-RZ pulse in an optical communications system with a dual-arm modulator having first and second arms, where the modulator is driven by RF signals on each arm, comprising the steps of:
The method of claim 3, further comprising a power divider for splitting an input RF signal into the RF signals that are applied to the first and second arms of the modulator.
A method of generating dense wave division multiplexing (DWDM) optical mm-waves in an optical transmission system, comprising the steps of:
A method of generating dense wave division multiplexing (DWDM) optical mm-waves in an optical transmission system, comprising the steps of:
Dependencies are inferred from the claim text.