Multi-port optical filtering glass package and method of manufacture thereof

An optical filtering device having an optical input and first and second optical outputs, the first optical output being spectrally identical to the optical input, the second optical output being spectrally different from the optical input;

• the device comprising:
• a three fiber-ferrule telescopically embedded in an insulated glass tube for carrying said optical input and said first and second optical outputs;
• and
• a collimating lens telescopically embedded in said insulted glass tube in axial alignment with said three fiber-ferrule, said insulated glass tube being enclosed by an outer glass tube;
• a filter element and a reflecting element in axial alignment with said collimating lens and being joined to each other by a holder interface.

A method of fabricating an optical filtering device, the device having an optical input and first and second optical outputs, the first optical output being spectrally identical to the optical input, the second optical output being spectrally different from the optical input, the method comprising the steps of:

• a) providing a plurality of insulating glass tubes of different diameter;
• b) telescopically embedding a three fiber-ferrule in a smaller one of said tubes;
• c) telescopically embedding a collimating lens in said smaller one of said tubes;
• d) joining said tubes in radial abutting relation;
• said smaller one of said tubes being contained a larger one of said tubes;
• e) attaching a filter element and reflecting element in axial alignment with said collimating lens;
• and
• f) plugging said larger one of said tubes.

An optical device having an optical input and optical output, the optical output being spectrally identical to the optical input;

• the device comprising:
• a two fiber-ferrule telescopically embedded in an insulated glass tube for carrying said optical input and said optical output;
• an optical collimating lens at least partially telescopically embedded in said insulated glass tube;
• said insulated glass tubes and said collimating lens being joined in axially abutting relation;
• a filter element axially aligned with said collimating lens for receiving said optical input and generating said optical output, said filter also generating a filtered output.

An optical filtering device having an optical input and first and second optical outputs, the first optical output being spectrally identical to the optical input, the second optical output being spectrally different from the optical input;

• the device comprising:
• a two fiber-ferrule telescopically embedded in an insulated glass tube for carrying said optical input and said first optical output;
• a collimating lens telescopically embedded in said insulted glass tube in axial alignment with said two fiber-ferrule, said insulated glass tube being enclosed by an outer glass tube;
• a filter element in axial alignment with said collimating lens and being joined to said lens by a holder interface;
• and
• a receiving device receiving said second optical output.

A method of fabricating an optical filtering device, the device having an optical input and a plurality of optical outputs, a first optical output being spectrally identical to the optical input, the remaining optical outputs being spectrally different from the optical input, the method comprising the steps of:

• a) providing a plurality of insulating glass tubes of different diameter;
• b) telescopically embedding a multiple fiber-ferrule in a smaller one of said tubes;
• claim 30. Continued
• c) telescopically embedding a collimating lens in said smaller one of said tubes;
• d) joining said tubes in radial abutting relation;
• said smaller one of said tubes being contained a larger one of said tubes;
• e) attaching a plurality of filter elements in axial alignment with said collimating lens;
• and
• f) plugging said larger one of said tubes.

An optical filtering device having an optical input and multiple optical outputs, a first optical output being spectrally identical to the optical input, the remaining optical outputs being spectrally different from the optical input;

• the device comprising:
• a multiple fiber-ferrule telescopically embedded in an insulated glass tube for carrying said optical input and said optical outputs;
• an optical collimating lens at least partially telescopically embedded in said insulated glass tube;
• claim 31. Continued
• said insulated glass tubes and said collimating lens being joined in axially abutting relation;
• a plurality of filter elements axially aligned with said collimating lens for receiving said optical input and generating said optical outputs.

An optical filtering device having an optical input and a plurality of optical outputs, a first optical output being spectrally identical to the optical input, the remaining optical outputs being spectrally different from the optical input;

• the device comprising:
• a multiple fiber-ferrule telescopically embedded in an insulated glass tube for carrying said optical input and said optical outputs;
• and
• claim 38. Continued
• a collimating lens telescopically embedded in said insulted glass tube in axial alignment with said multiple fiber-ferrule, said insulated glass tube being enclosed by an outer glass tube;
• at least one filter element in axial alignment with said collimating lens and being joined to said lens by a holder interface.