Citation: Peter A. Krug, Rodica Matei Rogojan, and Jacques Albert, "Directly photoinscribed refractive index change and Bragg gratings in Ohara WMS-15 glass ceramic," Appl. Opt. 48, 3429-3437 (2009)
Ohara’s WMS-15 glass-ceramic substrates will enable manufacturers to produce leading edge DWDM and Gain-Flattening Filters. Our WMS substrates will facilitate the production of filters with extremely low thermal wavelength drift and low insertion loss values. WMS-15 has improved internal transmittance and exceptionally low surface roughness values.
Properties
WMS®
Material Type>
Glass-ceramics
Specific Gravity
Young's Modulus
(GPa)
Vickers Hardness
800
96
Abrasion
Aa
31
Heat Resistance
(ºC)
650
Thermal Conductivity
(W/(m·K))
1.9
CTE
-30~70ºC (10-7/K)
114
Water Resistance
RW(P)JOGIS
1
Acid Resistance
RA(P)JOGIS
1
Internal Transmittance
1550nm 1mmt(%)
99.9
Refractive Index
1550nm
1.524
dn/dt
-30~70ºC (10-6/K)
-2.1
* CTE=114 x10-7/K(-30~70ºC): Standard material, Please consult us with higher CTE requirements.
* All properties are measured at room temperature except for CTE and dn/dt.
* Refractive Index and dn/dt is calculated value.
* Properties subject to change along development.
