PhD opportunities

City University London will be offering  some PhD positions with funding for exceptional students (see below). If there is an interest in applying to do PhD with me, please get in touch to discuss.

What is Offered

A doctoral studentship will provide:

  • An annual bursary (£16,000 in 2016/17)
  • The full tuition fee for UK and EU students. This award is for 3 years subject to ongoing excellent performance by the student. Applications are welcome from overseas applicants but the applicant must make appropriate arrangements to cover the difference between the overseas and UK tuition fee.


The studentships will be awarded on the basis of outstanding academic achievement and the potential to produce cutting edge-research.

  • Applicants must hold at least a 2.1 honours degree or merit level Masters degree in a relevant subject (or international equivalent)
  • Applicants whose first language is not English must have achieved at least 6.5 in IELTS or a recognised equivalent
  • Applicants must not be currently registered as a doctoral student at City University London or any other academic institution.

 How to Apply

Applications must consist of: a research degree application form , 3 page research proposal (the proposal must clearly identify the first (Category A) and second supervisor (Category A or B)), proof of academic qualifications, applicants CV, proof of English language proficiency (if the applicant’s first language is not English) and two confidential references (one of which must be an academic reference).

The above documents should be compiled into a single document and submitted to (Naina and Nathalie) by the 26th May 2016.

Selection Panel

A panel will be put in place to select the students immediately after May 26th. The panel will comprise the Dean, Associate Dean Research and a selection of staff (TBC) from across the School.

By artiagrawal Posted in General

Some more non-linearity

In recent times I have focused my blogposts on events that I attended.

Today I feel some pleasure in going back to writing a bit about my research.

In a recent journal article that we published we explored how an ultra broadband Supercontinuum in the mid Infra Red part of spectrum can be efficiently generated in spiral chalcogenide PCF.

We showed by numerical simulations an SCG spectra that spanned more than 3 Octave from 1.3-11 micron and beyond. The difficulties in generating SCG in these wavelength regimes include lack of sources at appropriate pump wavelengths, such sources of sufficiently high power, as well as waveguides that have zero and flat dispersion near the pump.

With the Equiangular Spiral PCF,  it is possible to modify both the dispersion (making it flat and close to zero @ the choice of pump wavelength)  as well as have a well confined modal field with large non-linearity.

What this work offers along with Disperison and nonlinearity control is the additional control of absorption: possibility  of a cladding  made of the same material as the core (only airholes are introduced for guidance) which overcomes the problem of absorption seen in other proposed/fabricated planar waveguide and step index chalcogenide based designs.

It goes without saying that the results were exhilarating and I now look forward to taking this work further, preferably with someone who can fabricate and test the design!

So if you want to collaborate do get in touch!