Compact wavelength filter integrated to a single-mode optical fi

Details Compact wavelength filter integrated to a single-mode optical fi Compact wavelength filter integrated to a single-mode optical fi

1989-09-07

1990-08-07

Sikes, William L.

350 9615, G02B 602

Patent

active

049462504

ABSTRACT:
A wavelength filter is integrated to a single-mode optical fiber capable of propagating a light signal and comprising a longitudinal and opaque outer jacket enveloping the fiber. This fiber is stripped of its jacket on a given length thereof to obtain a non-jacketed length of optical fiber. The so produced non-jacketed fiber length is formed with first and second concatenated biconical tapers separated from each other by a given distance and each having a given profile. By appropriately selecting the distance separating the two tapers and the given profile thereof, the filter will enable transmission of a first, predetermined wavelength of the propagated light signal while it will stop a second, predetermined wavelength of the signal. A method of integrating such a filter to a single-mode optical fiber is also proposed.

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