US 11,912,606 B2
Infrared-transmitting, polarization-maintaining optical fiber and method for making
Daniel J. Gibson, Falls Church, VA (US); Daniel Rhonehouse, Chesapeake Beach, MD (US); Shyam S. Bayya, Ashburn, VA (US); L. Brandon Shaw, Woodbridge, VA (US); Rafael R. Gattass, Washington, DC (US); Jesse A. Frantz, Washington, DC (US); Jason D. Myers, Alexandria, VA (US); Woohong Kim, Lorton, VA (US); and Jasbinder S. Sanghera, Ashburn, VA (US)
Assigned to The Government of the United States of America, as represented by the Secretary of the Navy, Arlington, VA (US)
Filed by The Government of the United States of America, as represented by the Secretary of the Navy, Arlington, VA (US)
Filed on Apr. 7, 2020, as Appl. No. 16/842,033.
Claims priority of provisional application 62/830,732, filed on Apr. 8, 2019.
Prior Publication US 2020/0317557 A1, Oct. 8, 2020
Int. Cl. C03B 37/012 (2006.01); C03B 37/027 (2006.01); G02B 6/024 (2006.01); C03B 37/023 (2006.01); C03C 25/005 (2018.01); C03C 25/106 (2018.01); G02B 6/10 (2006.01)
CPC C03B 37/01217 (2013.01) [C03B 37/0122 (2013.01); C03B 37/01222 (2013.01); C03B 37/01225 (2013.01); C03B 37/023 (2013.01); C03B 37/0279 (2013.01); C03B 37/02709 (2013.01); C03C 25/005 (2013.01); C03C 25/1063 (2018.01); C03B 2201/86 (2013.01); C03B 2203/302 (2013.01); C03B 2203/34 (2013.01); G02B 6/102 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method of making infrared-transmitting, polarization maintaining (IR-PM) optical fiber, comprising:
forming a cane comprising an infrared-transmitting, non-silica glass;
compressing the cane to form a compressed cane with an approximately elliptical cross-section and an approximately elliptical core;
inserting the compressed cane into a round hole in a tube to form an assembly, wherein there is air space between the compressed cane and the tube; and
stretching the assembly into a fiber that is approximately round with an approximately elliptical core, wherein the fiber has a birefringence greater than 10−5, and wherein the fiber is infrared-transmitting at wavelengths between 2 and 15 μm.