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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.
Glass-Ceramic Substrates for DWDM Thin Film Filters (WMS)
Properties of WMS
| Properties |
WMS-15 |
| Specific Gravity |
2.50 |
| Young's Modulus (GPa) |
96 |
| Vickers Hardness |
800 |
| Thermal Conductivity (W/mK) |
1.9 |
| Heat Resistance (ºC) |
650 |
| CTE (x10-7/K) -30~+70 ºC |
114* |
| Abrasion Aa (JOGIS) |
31 |
Water Resistance RW(p)
Acid Resistance RA(p) |
1
1 |
| Total Alkali Content (Wt %) |
10.9 |
| Chemical Durability |
Excellent |
| Int. Transmittance (%) 1550nm 1mm thick |
99.9 |
| Refractive Index 1550nm (calculated) |
1.524 |
| dn/dT (x10 /K) -30~+70 ºC 1550 nm |
-2.1 |
* CTE=114 x10-7/K(-30~70°C): 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.
Available Products: Polished Substrate ( 1- 12inch )
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Edge Chipping Photo Pictures
The WMS-15 glass ceramic substrates are less prone to edge chipping than amorphous glass substrates.
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