Optical isolator and optical part having heat-resistant anti-ref

Details Optical isolator and optical part having heat-resistant anti-ref Optical isolator and optical part having heat-resistant anti-ref

1996-12-17

1999-02-16

Spyrou, Cassandra C.

Optical: systems and elements

Polarization without modulation

Polarization using a time invariant electric, magnetic, or...

359281, 359497, 359500, 403272, G02B 530

Patent

active

058726527

ABSTRACT:
An improvement is proposed relating to an optical isolator for bonding of the polarizer and analyzer of polarizing glass to the respective holder rings for position adjustment. The improvement comprises: (a) forming a metallized layer of a specific composition over at least two of the side surfaces of each of the polarizer and analyzer on the area of the surface excepting for the linear areas of 50 to 150 .mu.m width from the top and bottom surfaces of the polarizer or analyzer; and (b) bonding the polarizer and analyzer to the respective holder rings by soldering using a solder alloy with intervention of the metallized layer between the polarizer or analyzer and the holder ring. The invention further provides an optical part having, on at least one of the surfaces, a heat-resistant anti-reflection coating film which is a double-layered film consisting of a thin film of the titanium oxide TiO.sub.x (x=1.9 to 2.2) as the underlayer of high refractive index and a thin film of silicon dioxide as the overlayer of low refractive index.

REFERENCES:
patent: 4509880 (1985-04-01), Wamstad
patent: 5128956 (1992-07-01), Aoki et al.
patent: 5341235 (1994-08-01), Watanabe et al.
patent: 5566264 (1996-10-01), Kuke et al.

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