Apparatus and method for ranging and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands

An apparatus for tracking a phase of at least one electro-magnetic signal generated by an interferometer so as to reduce an attenuation of the at least one signal due to its fringe instability, comprising:

• a processing arrangement configured to:
• a. receive information associated with the at least one signal,
• b. adjust the phase of the at least one signal,
• c. obtain a position of a signal section of the at least one signal,
• d. modify at least one characteristic of the at least one signal if the position of the signal section is provided away from a peak of the at least one signal by more than a predetermined distance, and
• e. repeat steps (c) and (d) until the at least one signal is within the predetermined distance from the peak.

A logic arrangement for tracking a phase of at least one electro-magnetic signal generated by an interferometer so as to reduce an attenuation of the at least one signal due to its fringe instability, which, when executed by a processing arrangement, configures the processing arrangement to perform procedures execute the comprising of:

• a) receiving information associated with the at least one signal;
• b) adjusting the phase of the at least one signal;
• c) obtaining a position of a signal section of the at least one signal;
• d) modifying at least one characteristic of the at least one signal if the position of the signal section is away from a peak of the at least one signal by more than a predetermined distance;
• and
• e) repeating steps (c) and (d) until the at least one signal is within the predetermined distance from the peak.

A method for tracking a phase of at least one electromagnetic signal generated by an interferometer so as to reduce an attenuation of the at least one signal due to its fringe instability, comprising:

• a) receiving information associated with the at least one signal;
• b) adjusting the phase of the at least one signal;
• c) obtaining a position of a signal section of the at least one signal;
• d) modifying at least one characteristic of the at least one signal if the position of the signal section is away from a peak of the at least one signal by more than a predetermined distance;
• and
• e) repeating steps (c) and (d) until the at least one signal reaches a further position that is within the predetermined distance from the peak.

A storage medium including executable instructions thereon for tracking a phase of at least one electromagnetic signal generated by an interferometer so as to reduce an attenuation of the at least one signal due to its fringe instability, wherein, when the executable instructions are executed by a processing system, the executable instructions configure the processing system to perform procedures comprising:

• a) receiving information associated with the at least one signal;
• b) adjusting the phase of the at least one signal;
• c) obtaining a position of a signal section of the at least one signal;
• d) modifying at least one characteristic of the at least one signal if the position of the signal section is away from a peak of the at least one signal by a predetermined distance;
• and
• e) repeating steps (c) and (d) until the at least one signal is within the predetermined distance from the peak.