Phase Modulators - Bookham - #1

We are pleased to introduce this new line of KTP electro-optic modulators offering increased optical damage thresholds of more than five times that of our LiNbOg modulators. With patented and patent-pending designs, these modula­tors achieve high effi­ciency for high modula­tion depths, too. As with all of our modula­tors, these modulators have low insertion loss­es and extremely low unwanted residual amplitude modulation. And, using them is easy: simply pass the beam through pre-aligned mechanical apertures for the optimal optical performance.

Models 4062 & 4064

These models can operate over a broad range of frequencies—from DC to 250 MHz. The Model 3211 broadband-modulator drivers (page 70) can be used to drive these modula­tors in the DC-to-0.6-MHz range.

Models 4061 & 4063

These devices use a patented resonant tank circuit to maximize power transfer from driver to crystal, thereby maxi­mizing the voltage across the crys­tal. These built-in resonant circuits lower required drive voltages by a factor of nearly ten. To optimize per­formance at every frequency, these modulators are built with fixed com­ponents, so they are only slightly tunable around the resonant fre­quency. If your needs change, we can replace the resonant circuit for a modest fee. The Model 3363 resonant-modulator drivers can be used to drive these modulators (see page 72).

Models 4461 & 4463

With these modulators, the crystal is placed in a microwave cavity that is designed to resonate at the particular frequency you specify when ordering. A tuning slug allows adjustment of the resonant frequency over a range of 250 MHz or greater. The Model 3363 reso­nant-modulator drivers can be used to drive these modulators (see page 72).