Method and apparatus for temporally shifting one or more packets using wavelength selective delays

A method for delaying at least one packet, said method comprising the steps of:

• adjusting an initial wavelength of said at least one packet to a generated optical control wavelength associated with a desired delay period;
• applying said at least one packet having said generated optical control wavelength to a k-deep random access write buffer including k passive coarse delay elements to delay said packet by up to k time slots;
• and
• summing an output of each of said k coarse delay elements to produce an output signal.

A random access write buffer for rescheduling one or more packets, comprising:

• a wavelength converter for adjusting an initial wavelength of said at least one packet to a generated optical control wavelength associated with a desired delay period;
• k passive coarse delay elements to delay said packet by up to k time slots;
• and
• a summer for aggregating an output of each of said k coarse delay elements to produce an output signal.

A method for delaying a plurality, p, of packets, said method comprising the steps of:

• adjusting an initial wavelength of each of said plurality of packets to a corresponding generated optical control wavelength associated with a desired delay period;
• applying said plurality of packets having said corresponding generated optical control wavelength to a k-deep random access write buffer including k passive coarse delay elements to delay said packet by up to k time slots, each of said k passive coarse delay elements having at least p resonant wavelengths;
• and
• summing an output of each of said k passive coarse delay elements to produce an output signal.