Silicon-based Single-chip Integrated 9Bit VODL Chip

Introduction

Single-chip integrated multi-bit optical delay chip is based on thick film SOI silicon photonic technology, which is the optical time delay product with the best comprehensive performance and the highest integration. Adopting binary multi-stage delay loop structure, the chip integrates delay switch and delayed optical waveguide loop with equalization and clutter suppression attenuator, the delay switching time reaches less than 200ns, and the maximum total delay is 1022ps. The delay accuracy is 0.5ps, and the single-stage delay loss in the chip is as low as 0.8dB/bit. Compared with the traditional electric delay chip using microwave transmission line, the optical delay line can be applied to any microwave and millimeter-wave frequency band, with extremely low crosstalk and high extinction ratio of non-target delay signal. The maximum delay of 1ns 9bit variable optical delay chip size is as small as 2cm×1.5cm, which greatly reduces the system volume; Due to the optical carrier frequency relative to microwave signals up to 4 orders of magnitude larger than the frequency ratio, the photonic integrated of delay chip has a full range of signal processing capability covering all frequency bands from meter wave to millimeter wave, which is suitable for all types of ultra-wideband phased array beam synthesis applications.

Features

• High speed switching（100～200ns）
• High delay accuracy （0.5ps Typ. 0.2ps available）
• Ultra-small size
• Ultra-broadband operation
• All solid-state waveguide chip of high reliability
• Large delay range(~2ns available)
• High power tolerance(23dBm Typ.)
  

应用

• Optically controlled phased array radar system、Ultra-wideband optical domain signal processing

主要性能指标