Oz Optics Mbc-pdbc Modulator Bias Controller Instruction Manual

OZ Optics MBC-PDBC Modulator Bias Controller

Features

• Compact
• Ditherless, no. pilot tone
• High dynamic range, high accuracy
• Usable with Mach-Zehnder (MZ) modulator
• Usable for Fabry-Perot fiber control loop-back
• Fast response
• Tunable
• Alarming LED for overtuning
• Automatically lock to quad precisely then enter into ditherless mode

Product Description

The Precision Ditherless Bias Controller is an OEM version standalone device for bias control in a feed- back loop. The most important feature is its use of pi- lot tone mode to accurately bring the modulator to the Quad position, followed by the use of ditherless mode to continue locking the modulator at that point. The user can aiso disabie tne pilot tone and use the manual mode to lock the bias of the modulator or the device under control to another desired working point. The locking slope can be switched with a jumper on the board. When the modulator drifts out of the specified range, the unit will pull the bias back to the desired work- ing point. There are two built-in photodiodes on the board. An ex- ternal reference voltage can also be applied when specified at the time of order. There is a port for the user to tune the Bias Controller by applying an external voltage when it is set to the manual mode.

Specifications

ASSEMBLY

Figure 1. Configuration of Precision Ditherless BC for modulation with complimentary outputs

Figure 2. Configuration of Precision Ditherless BC for MZ modulator with one putput

Figure 3. Configuration of Precision Ditherless BC for FP Tunable Filter
(The 5% coupling ratio may change depending on the insertion loss of FP tunable filter)

Part Number

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03-3356-1064

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