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9 / 4 / 2003
f@substrate for DWDM
@Bandpass Filters for DWDM have to perform low thermal shift of transmission peak wavelength. We have developed the
glass substrate with high internal transmittance at 1.55μm and optimum thermal expansion, high Young's modulus.
Properties Unit K-LC10 K-LC20 K-LC30 K-LC40
Thermal |RO`VO XT POR POR POX
Expansion POO`ROO
~PO|V^
PPX PRO PRR PRX
Vickers Hardness@g ^Q USO TTP UOU TWV
Youngs Modulus fo XRDQ VXDS WODP WWDQ
Transformation Point@s TQQ SSO SST SWS
Water Resistance@q P Q Q P
Acid Resistance@q P P P P
Specific Gravity@rDD ^ RDOP QDVX QDWX QDXP
Internal Transmittance PDTTΚ s(1mm) XXDX XXDX XXDX XXDX
Refractive Index PDTTΚ PDUWV PDTTR PDTUR PDUTX
E Measured at room temperature except thermal expansion.
E These glasses are of lead and arsenic free materials.
E All data are subject to change without notice.
Sumita Optical Glass Inc.
4-7-25 Harigaya, Urawa-ku, Saitama City, Saitama, 330-8565 Japan @
Phone +81-(0) 48-832-3165/FAX +81-(0) 48-824-0734
E-mail sumita@po.sphere.ne.jp@Home Page http://www.sumita-opt.co.jp/ H.T