Crystals Land

* Welcome To DWDM Filters *
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DWDM Filters

We manufacture DWDM Filters. Customerized coatings to meet your specifications.

Specification:

Wavelength   C- and L-Band
Spacing         50GHZ
                      100GHZ
                      200GHZ

For 200 GHz Filters

Parameter

Symbol

Unit

Spec.

Peak Insertion Loss

ILp

dB

< 0.5

Center Wavelength

lc

nm

ITU

Center Wavelength
Tolerance

lc

nm

0.2

0.5 dB Bandwidth

BW0.5dB

nm

> 0.8

25 dB Bandwidth

BW25dB

nm

< 2.4

Passband Bandwidth

BWPB

nm

0.72

Maximum Insertion
Loss within the Passband

ILmax

dB

< 0.8

Ripple

IL

dB

< 0.3

Asymmetry

nm

< 0.1

Polarization Dependent Loss

PDL

dB

< 0.1

Coefficient of Thermal Change
in Center Wavelength

CTW

pm/C

< 1.0

 

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